RE: How to embed bean:message within a template
template:put name="title" direct="true" bean:message key="index.title"/ /template:put -Original Message-From: Jeff Trent [mailto:[EMAIL PROTECTED]]Sent: 30 April 2001 20:10To: [EMAIL PROTECTED]Subject: How to embed bean:message within a template Newbie here. Just wondering how to accomplish this using templates. template:put name='title' content='bean:message key="app.title"/' direct='true' / Can't seem get the bean to evaluate the message text... Suggestions? I tried direct on off but no luck. Thanks, Jeff
RE: Creating html:hidden ... dynamically
We plan to store bean data has hidden form objects , so that it could be
passed to the subsequent pages, without having to make the scope of the
beans to be session. We do not know how many attributes the bean objects
can have, and plan to store it in an array of hidden form objects like
this.
How about using a Tag to generate the hidden fields for each of the beans
properties.
I have written the following StoreBeanTag which does this.
Niall
Start of StoreBeanTag---
package mytaglib;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspException;
import org.apache.struts.util.PropertyUtils;
import org.apache.struts.util.RequestUtils;
import org.apache.struts.util.ResponseUtils;
/**
*
* This tag takes a Bean and stores all its properties/values
* as hidden input type html tags.
*
* @author Niall Pemberton
* @version 1.0
*/
public class StoreBeanTag extends TagSupport {
public static String QUOTE = \;
protected String name = null;
protected String property = null;
protected String scope = null;
/** Get the name */
public String getName() {
return (this.name);
}
/** Set the name */
public void setName(String name) {
this.name = name;
}
/** Get the property */
public String getProperty() {
return (this.property);
}
/** Set the property */
public void setProperty(String property) {
this.property = property;
}
/** Get the scope of the property */
public String getScope() {
return (this.scope);
}
/** Set the scope of the property */
public void setScope(String scope) {
this.scope = scope;
}
/**
* Process the tag
*/
public int doStartTag() throws JspException {
StringBuffer buffer = new StringBuffer();
// Find the specified Bean
Object bean = null;
if (property == null) {
bean = RequestUtils.lookup(pageContext, name, scope);
} else {
bean = RequestUtils.lookup(pageContext, name, property, scope);
}
if (bean == null) {
// return (SKIP_BODY);
JspException e = new JspException(StoreBeanTag: Missing bean +
name+ +property);
RequestUtils.saveException(pageContext, e);
throw e;
}
// Get the beans properties
PropertyDescriptor[] descriptors =
PropertyUtils.getPropertyDescriptors(bean);
for (int i = 0; i descriptors.length; i++) {
String name = descriptors[i].getName();
if (!(name.equals(class))) {
try {
Object value = PropertyUtils.getSimpleProperty(bean, name);
name = property == null ? name : property+.+name;
buffer.append(createHiddenField(name, value));
}
catch (NoSuchMethodException ex) {}
catch (InvocationTargetException ex) {}
catch (IllegalAccessException ex) {}
}
}
// Print the created message to our output writer
ResponseUtils.write(pageContext, buffer.toString());
// Continue processing this page
return (SKIP_BODY);
}
/**
* Create a hidden field for the property
*/
protected String createHiddenField(String property, Object obj) {
if (obj == null)
return ;
String value = obj.toString();
if (value == null || value.equals())
return ;
return input type=+QUOTE+hidden+QUOTE+
name=+QUOTE+property+QUOTE+
value=+QUOTE+value+QUOTE+/\r\n;
}
/**
* Release all allocated resources.
*/
public void release() {
super.release();
name = null;
property = null;
scope = null;
}
}
End of StoreBeanTag---
RE: Suggestion/Idea for iterate tag: Iterate ResultSets
I haven't used it, but this looks similar to whats been developed in the jakarta taglibs project - see JDBC taglib. http://jakarta.apache.org/taglibs/doc/jdbc-doc/intro.html Niall -Original Message- From: Mindaugas Idzelis [mailto:[EMAIL PROTECTED]] Sent: 07 May 2001 15:06 To: [EMAIL PROTECTED]; Jonathan Asbell Subject: RE: Suggestion/Idea for iterate tag: Iterate ResultSets I just thought of another option: If resultsets are tied to a connection and a statement, then specify the sql query within the iterator: Hypothetical taglibs: sql:query id=myQuery SELECT col1, col2 FROM table WHERE id 1 !-- even use bean:write in here to dynamically make queries -- /sql:query logic:iterate id=row query=myQuery bean:write name=row property=col1/ bean:write name=row property=col2/ br /logic:iterate Where sql:query would only be evauluated once per iteration. Would this be possible to create? I have never authored a taglib, so any feedback from taglib veterans is greatly appreciated. I think this would be a great addition to the taglibs framework. --min -Original Message- From: Jonathan Asbell [mailto:[EMAIL PROTECTED]] Sent: Sunday, May 06, 2001 11:47 PM To: [EMAIL PROTECTED] Subject: Re: Suggestion/Idea for iterate tag: Iterate ResultSets Result sets ARE tied to the connection in a way. Some DB drivers throw exceptions when you try to manipulate data while you still have a pointer to rows. At work we were trying to manipulate a stream which was pointing to an output parameter in a stored proc while the connection was open. The result was that we had to convert the stream into another object (String in our case) and close the connection just to manipulate the data. - Original Message - From: Mindaugas Idzelis [EMAIL PROTECTED] To: struts [EMAIL PROTECTED] Sent: Sunday, May 06, 2001 9:33 PM Subject: Suggestion/Idea for iterate tag: Iterate ResultSets I just thought up of an excellent idea (although, I wasn't the only one). Use the iterate tag to iterate over the rows of a resultset. The column meta data could be exposed as beans named as the column name. A bean:write operation would display the data in the column. I did a search about this topic in the mailing list archive, and I found this message: http://marc.theaimsgroup.com/?l=struts-userm=98269295229785w=2 It talk about ResultSets being tied to connections. This is not the case. ResultSets are tied to the statements that produced them, and as far as I can tell, statements are not closed when the connection is closed. Other than that, It should be easy to change the iterate tag to support resultsets. If anyone is interested in helping me extend or develop a tag for this purpose, please message me. --min
RE: Application Scoped Object Initialization
Sub-class ActionServlet and override the init() method.
Also a good idea to override the destroy() method to clean up allocated
resources. Additionally the reload() method does the destroy and init
actions to re-load the servlet.
public void init() throws ServletException {
super.init();
initMyClass();
}
public void initMyClass() throws ServletException {
MyClass myClass = new MyClass();
getServletContext().setAttribute(myPackage.MyClass, myClass);
}
public void destroy() throws ServletException {
super.destroy();
destroyMyClass();
}
public void destroyMyClass() {
// clean up allocated resources here
}
public void reload() throws IOException, ServletException {
super.reload();
// Shut down
destroyMyClass();
// Restart
initMyClass();
}
-Original Message-
From: Jeff Trent [mailto:[EMAIL PROTECTED]]
Sent: 08 May 2001 15:52
To: [EMAIL PROTECTED]
Subject: Application Scoped Object Initialization
What is the suggested method for singleton, application scoped object
initialization? Where how does it happen?
I want to create a singleton containing shared cached lists to be used in
populating html:options with.
Thanks.
RE: textarea and wrap
I have had other similar issues and I think a very useful enhancement to all
Struts tags would be to make them more granular so that they could be easily
sub-classed and modified. Currently methods such as doStartTag() tend to
have one big lump of code which means if you want to change it behaviour you
have to override it and then duplicate much of the code in the original
method. An example of the kind of structure I'm looking for is below:
From the CheckboxTag:
public int doStartTag() throws JspException {
StringBuffer results = new StringBuffer(input type=\checkbox\);
results.append(prepareName());
results.append(prepareAccessKey());
results.append(prepareTabindex());
results.append(prepareValue());
results.append(prepareEventHandlers());
results.append(prepareStyles());
results.append();
// Print this field to our output writer
JspWriter writer = pageContext.getOut();
try {
writer.print(results.toString());
} catch (IOException e) {
throw new JspException
(messages.getMessage(common.io, e.toString()));
}
// Continue processing this page
return (EVAL_BODY_TAG);
}
protected String prepareName() {
return name=\+this.property+\;
}
etc. etc.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Matthias Bauer
Sent: 09 May 2001 11:38
To: [EMAIL PROTECTED]
Subject: Re: textarea and wrap
I posted a bug report and sent a patch for struts on this one. I
think this was
last week. The committers decided not to include it, because the
wrap attribute
is not in the HTML spec. This is really unfortunate, escpecially
because the
little patch I already provided is just a minor change and would
be useful for
pretty many developers, I think.
So what I am doing: I am patching struts locally. You should be
able to find my
mail with the patch in the mail-archive.
--- Matthias
William Jaynes wrote:
I usually need 'wrap=virtual' as an attribute for my textareas. It
isn't part of the HTML spec, but it's supported in both Netscape and IE,
and it's pretty useful. I wonder how people are dealing with the lack of
a wrap attribute in the struts textarea tag.
--
William Jaynes | University of Michigan Medical School
[EMAIL PROTECTED] | 734-763-6751
RE: Posting Collections
The problem is the CheckBox tag currently sets the HTML name attribute to
the property, so your JSP will produced something like this:
input type=checkbox name=delete
So all the checkbox fields will have the same name.
In order for Struts to populate your Retailer bean with the delete values
you need the generated HTML to look like this:
input type=checkbox name=retailer[0].delete
input type=checkbox name=retailer[1].delete etc etc.
Struts would then use getRetailer(0).setDelete(boolean) to set the delete
attributes correctly.
Unfortunately there is no easy solution - many people resort to scriptlets
to generate the name properly and there are quite a few messages in the
archive about this.
I created my own versions of Struts tags and changed them to generate the
name correctly - I like that much better - no java in the view.
Niall
-Original Message-
From: Tony Karas [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2001 17:50
To: [EMAIL PROTECTED]
Subject: Posting Collections
Briefly, this is what I am trying to achieve:
- Retrieve a list of items from a database
- Display each item with a corresponding checkbox
- Display a Delete button - which when pressed deletes all
checked items.
Unfortunately, although I have managed to display the items correctly and
set the checkbox value using boolean values, when I do the form
submit - my
ActionForm properties do not get filled in.
This is the code I have:
My ActionForm looks like this:
public class RetailerForm extends ActionForm
{
protected Vector retailer;
/*
* On construction, fill the form with all the retailers
*/
public RetailerForm() throws SQLException
{
//here i have some code to generate my vector
//which is comprised of Retailer beans.
}
public Retailer getRetailer( int index )
{
return (Retailer)retailer.elementAt( index );
}
public Vector getRetailer()
{
return retailer;
}
public void setRetailer( Vector value )
{
retailer = value;
}
}
My Retailer bean has get and set elements for properties called
delete
and name.
My struts code looks like this (obviously within html:form tags):
logic:iterate id=retailer name=retailerForm property=retailer
tr
tdhtml:checkbox name=retailer property=delete//td
tdbean:write name=retailer property=name//td
/tr
/logic:iterate
And this all works ok for displaying the data. However, when I do the
submit my delete property for each bean is not set and I have added
debugging code to the set method and this is not called by struts. I
don't get error messages - it just doesn't happen.
I know other people have had this problem, but I am struggling to find a
solution.
Can anyone help me? Is there a better way of achieving what I am
trying to
achieve? If I am doing the correct thing, what's the reason it's not
working.
All help appreciated.
Cheers
Tony
_
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
RE: ConnectionPooling in struts
I'm using MySQL rather than Oracle...
--Struts-congif.xml-
struts-config
data-sources
data-source description=MySQL-test
driverClass=org.gjt.mm.mysql.Driver
url=jdbc:mysql://localhost/test
password=
user=
autoCommit=true
maxCount=4
minCount=2 /
/data-sources
/struts-config
--Action---
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
nextAction = success;
// Create Database connection
Connection connection = null;
// Insert Build Program Items
try {
DataSource dataSource =
(DataSource)servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY)
;
connection = dataSource.getConnection();
Statement statement = connection.createStatement();
ResultSet result = statement.executeQuery(SELECT * FROM orders);
}
}
catch (SQLException sqle) {
// Log exception and post error message
servlet.log(ActionDB-SQL Exception: , sqle);
nextAction = error;
}
finally {
try {
if (connection != null) {
connection.close();
}
}
catch (SQLException sqle) {
servlet.log(ActionDB-SQL Exception Closing Connection: , sqle );
}
// Forward control to the specifiedURI
return (mapping.findForward(nextAction));
}
}
-Original Message-
From: Dinu Jose [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2001 19:38
To: '[EMAIL PROTECTED]'
Subject: ConnectionPooling in struts
Hi All,
Could somebody help me in solving this issue.
I need an example of connection pooling in struts.
I had to use the oracle thin driver
The files needed are:
i) struts-config.xml
ii) java class
I want to know how I must write the datasource part in
struts-config.xml.
and the java class which extends the Action class.
I have tried the example given in the struts site ,but didn't
succeed.
and it is not fully given.
Waiting for your help.
thanks in advance
Dinu
RE: Posting Collections
The problem is the CheckBox tag currently sets the HTML name attribute to
the property, so your JSP will produced something like this:
input type=checkbox name=delete
So all the checkbox fields will have the same name.
In order for Struts to populate your Retailer bean with the delete values
you need the generated HTML to look like this:
input type=checkbox name=retailer[0].delete
input type=checkbox name=retailer[1].delete etc etc.
Struts would then use getRetailer(0).setDelete(boolean) to set the delete
attributes correctly.
Unfortunately there is no easy solution - many people resort to scriptlets
to generate the name properly and there are quite a few messages in the
archive about this.
I created my own versions of Struts tags and changed them to generate the
name correctly - I like that much better - no java in the view.
Niall
-Original Message-
From: Tony Karas [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2001 17:50
To: [EMAIL PROTECTED]
Subject: Posting Collections
Briefly, this is what I am trying to achieve:
- Retrieve a list of items from a database
- Display each item with a corresponding checkbox
- Display a Delete button - which when pressed deletes all
checked items.
Unfortunately, although I have managed to display the items correctly and
set the checkbox value using boolean values, when I do the form
submit - my
ActionForm properties do not get filled in.
This is the code I have:
My ActionForm looks like this:
public class RetailerForm extends ActionForm
{
protected Vector retailer;
/*
* On construction, fill the form with all the retailers
*/
public RetailerForm() throws SQLException
{
//here i have some code to generate my vector
//which is comprised of Retailer beans.
}
public Retailer getRetailer( int index )
{
return (Retailer)retailer.elementAt( index );
}
public Vector getRetailer()
{
return retailer;
}
public void setRetailer( Vector value )
{
retailer = value;
}
}
My Retailer bean has get and set elements for properties called
delete
and name.
My struts code looks like this (obviously within html:form tags):
logic:iterate id=retailer name=retailerForm property=retailer
tr
tdhtml:checkbox name=retailer property=delete//td
tdbean:write name=retailer property=name//td
/tr
/logic:iterate
And this all works ok for displaying the data. However, when I do the
submit my delete property for each bean is not set and I have added
debugging code to the set method and this is not called by struts. I
don't get error messages - it just doesn't happen.
I know other people have had this problem, but I am struggling to find a
solution.
Can anyone help me? Is there a better way of achieving what I am
trying to
achieve? If I am doing the correct thing, what's the reason it's not
working.
All help appreciated.
Cheers
Tony
_
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
RE: Posting Collections
This issue applies to all form field tags, not just checkboxes.
Modifying struts tags is currently a pain, but I just subimitted a bugzilla
enhancement to re-factor the tags so that they are more granualar and make
it easier to override descrete bits such as generating the name attribute.
In principle the enhacement has been accepted and I hope to submit a patch
in the next few days. If it is accepted I will have a set of custom versions
of these tags for this behviour very soon and you won't have to start
hacking around with the code every time a new version comes out and anyone
will be welcome to them.
Addtionally this issue is all on the ToDo list for 1.1 and I'm sure it
will be sorted then.
I think struts is excellent, and I love open source because you can always
look inside to see what they've done. Of course it doesn't do everything yet
;-) but I can't see it getting anything but better. We have done quite a bit
of work customizing the ActionServlet and the way its been built is
excellent, making it really easy to add addtional behaviour (hopefully)
without having to hack around every time a new version comes out.
Niall
-Original Message-
From: Tony Karas [mailto:[EMAIL PROTECTED]]
Sent: 10 May 2001 10:34
To: [EMAIL PROTECTED]
Subject: RE: Posting Collections
Many thanks Niall, that clears things up for me. Do you know if
there is a
reason why this is the behaviour for checkboxes? Is this just with
checkboxes or other tags as well?
I don't really like the idea of modifying the struts code - the
whole point
of deciding to use it is for code reuse - I don't want to start hacking
around with the code every time a new version comes out.
Do you have an opinion on using Struts? I've been using it for a
couple of
weeks now and have been struggling because of basic lack of
information. I
get most of my training from this news group! I'm wondering whether I
should just jack it in and use something else.
Cheers
Tony
From: Niall Pemberton [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: RE: Posting Collections
Date: Wed, 9 May 2001 20:51:00 +0100
The problem is the CheckBox tag currently sets the HTML name attribute to
the property, so your JSP will produced something like this:
input type=checkbox name=delete
So all the checkbox fields will have the same name.
In order for Struts to populate your Retailer bean with the delete values
you need the generated HTML to look like this:
input type=checkbox name=retailer[0].delete
input type=checkbox name=retailer[1].delete etc etc.
Struts would then use getRetailer(0).setDelete(boolean) to set the delete
attributes correctly.
Unfortunately there is no easy solution - many people resort to
scriptlets
to generate the name properly and there are quite a few messages in the
archive about this.
I created my own versions of Struts tags and changed them to generate the
name correctly - I like that much better - no java in the view.
Niall
-Original Message-
From: Tony Karas [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2001 17:50
To: [EMAIL PROTECTED]
Subject: Posting Collections
Briefly, this is what I am trying to achieve:
- Retrieve a list of items from a database
- Display each item with a corresponding checkbox
- Display a Delete button - which when pressed deletes all
checked items.
Unfortunately, although I have managed to display the items correctly
and
set the checkbox value using boolean values, when I do the form
submit - my
ActionForm properties do not get filled in.
This is the code I have:
My ActionForm looks like this:
public class RetailerForm extends ActionForm
{
protected Vector retailer;
/*
* On construction, fill the form with all the retailers
*/
public RetailerForm() throws SQLException
{
//here i have some code to generate my vector
//which is comprised of Retailer beans.
}
public Retailer getRetailer( int index )
{
return (Retailer)retailer.elementAt( index );
}
public Vector getRetailer()
{
return retailer;
}
public void setRetailer( Vector value )
{
retailer = value;
}
}
My Retailer bean has get and set elements for properties called
delete
and name.
My struts code looks like this (obviously within html:form tags):
logic:iterate id=retailer name=retailerForm property=retailer
tr
tdhtml:checkbox name=retailer property=delete//td
tdbean:write name=retailer property=name//td
/tr
/logic:iterate
And this all works ok for displaying the data. However, when I do the
submit my delete property for each bean is not set and I have added
debugging code to the set method and this is not called
RE: How can I use set-property property=foo value=123 / in struts-config.xml
I think you got the wrong end of the stick. The action elements in struts-config relate to ActionMapping classes, not the Action class. You need to sub-class the ActionMapping class and add your properties and getters/setters to that class. Then you need to add a init-param element for the ActionSrvlet to the web.xml to tell it to use your custom ActionMapping class as follows: init-param param-namemapping/param-name param-valuecom.myPackage.myActionMapping/param-value /init-param Then in your action class you need to cast the mapping object to your custom class and then call the getter to retrieve the property values. Niall -Original Message- From: David Holland [mailto:[EMAIL PROTECTED]] Sent: 11 May 2001 18:08 To: '[EMAIL PROTECTED]' Subject: How can I use set-property property=foo value=123 / in struts-config.xml How can I use set-property property=foo value=123 / in struts-config.xml ? I want to use it in place of forward to store Action configuration info (set-property is specified in the dtd). Tried to add getter setter to Action descendant - but assignment by introspection didn't seem to work. Looked at the source for ActionServlet, and the digester class does appear to be doing something with this property, although it looks like it is only looking for a single instance in an action. As far as I can tell, either it is not intended for general use or it is broken. Any thoughts? David Holland [EMAIL PROTECTED]
RE: Determining odd-even table rows
I have a RowTag that does this, it generates tr elements and you can specify either oddColor/evenColor attributes to generate bgcolor= attributes or oddStyle/evenStyle parameters to generate class= attributes for CSS. So the jsp looks like this: table logic:iterate id=.. name=.. property=.. util:row oddColor=#C0C0C0 evenColor=#FF td./td td./td /util:row /logic:iterate /table You can either specify both odd and even or just one of them. I'll send it if you're interested. Niall -Original Message- From: Bill Pfeiffer [mailto:[EMAIL PROTECTED]] Sent: 11 May 2001 20:08 To: Struts-User Subject: Determining odd-even table rows I'm trying to figure out how to do a green-bar effect (different backround colors for every other row of a table) with struts/jsp. I am using a tagified javax.sql.Rowset. I can iterate through the rowset via my tags (reworked jakarta DBTags). The problem, more of a mental block, is how do I alternate the backround colors of the html rows I am writing WITHOUT resorting to scriptlets. I have just added a tag to get the current row, so I have that returing, but what do I do with it? The logic tags in struts deal only with comparisons to constants. I need to do some math to determine whether the current row is odd/even so I can set the backround. Is it easier than this and I'm missing it? My goal here is not to do any scriplets. I'm putting together a set of tags to help our web guy build pages using only tags. Thanks for any help, Bill Pfeiffer
RE: FW: Determining odd-even table rows
Fine by me. Great job on the web site by the way. Niall -Original Message- From: Ted Husted [mailto:[EMAIL PROTECTED]] Sent: 13 May 2001 11:48 To: [EMAIL PROTECTED] Subject: Re: FW: Determining odd-even table rows Cool. I've made it available for download on my Struts page, if that's all right. http://husted.com/about/struts/ Niall Pemberton wrote: OK, its attached.
RE: Iterate index property example?
The RowTag I wrote uses it - up until 28/04/2001 you couldn't access it (thats afte 1.0-b1), after that Craig added a getIndex() method. You can download my RowTag from Ted Husted's site at: http://husted.com/about/struts/ Niall -Original Message- From: David Lieberman [mailto:[EMAIL PROTECTED]] Sent: 13 May 2001 13:56 To: [EMAIL PROTECTED] Subject: Iterate index property example? Can anyone send me an example for accessing the index property of the iterate tag? Thanks! -- ___ David Lieberman Software Engineer, Multimedia Group, ITG Harvard Business School Cotting House 317 Boston, MA 02163 617.495.6389 ___
RE: Editing tabular data
There are quite a few messages in the archive about this: http://www.mail-archive.com/struts-user%40jakarta.apache.org/ A couple of messages from a recent thread: http://www.mail-archive.com/struts-user@jakarta.apache.org/msg07656.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg07767.html Niall -Original Message- From: James Howe [mailto:[EMAIL PROTECTED]] Sent: 14 May 2001 21:17 To: [EMAIL PROTECTED] Subject: Editing tabular data I'm currently in the process of coding a Struts-based JSP page which will let my user edit a table of values. I started out by creating a read-only display of values using the logic:iterate tag and bean:write tags. The object associated with the iterate tag answers a collection of beans and I have several bean:write tags which are used to display the properties of the bean. It looks something like this: logic:iterate id=bean name=beanCollector property=beanCollection tr td width=70bean:write name=bean property=prop1 filter=false//td td width=70bean:write name=bean property=prop2 filter=false//td [ more attributes ...] /tr /logic:iterate I'm now somewhat at a loss as to how to construct a screen which will let the user update any and all fields in the table and save them. Can anybody provide and example of how I might go about building a page which can edit a table of information? Thanks.
RE: is it a bug of CheckboxTag
This is an HTML issue. Lots of discussion in the archives about this: A recent one: http://www.mail-archive.com/struts-user@jakarta.apache.org/msg06473.html Niall -Original Message- From: JeanX [mailto:[EMAIL PROTECTED]] Sent: 15 May 2001 04:00 To: struts-user Subject: is it a bug of CheckboxTag Hi struts-user, If I uncheck a checkbox, there is no corresponding parameter pair in request. So I can not get the right status of certain form. How to resolve it ? :=) Best regards, JeanX pacificnet.com(GZ)
IF / ELSE and SWITCH/CASE Tags
Attached are tags to do If/Else and Switch/Case logic, based on existing Struts logic tag classes - the key classes inherit from the Struts CompareTagBase. 1) IF/ELSE: (IfTag, ThenTag, ElseTag) The IfTag provides the same functionality as the Equal, NotEqual, LessEqual, LessThan, GreaterThan, GreaterEqual, Match, NoMatch, Present, NotPresent tags by specifying that in the op attribute. Example Usage: logic:if op=GreaterThan name=testbean property=doubleProperty value=400 logic:then Property Greater Than Value /logic:then logic:else Property Not Greater Than Value /logic:else /logic:if 2) SWITCH/CASE: (SwitchTag, CaseTag, DefaultTag) Example Usage: logic:switch name=testbean property=doubleProperty logic:case value =11 matched/logic:case logic:case value =321321 matched 1st/logic:case logic:case value =321321 matched 2nd/logic:case logic:case value =55 matched/logic:case logic:defaultNo values matched - default processing/logic:default /logic:switch [[ LOGIC.ZIP : 1544 in winmail.dat ]] winmail.dat
RE: Suggestion:Taking the Servlet out of Action and ActionForm
I don't agree - Actions are part of the controller in MVC and need access to the servlet API to do thing such as retrieving and storing objects under the appropriate context. Sounds to me like 1) Your using the wrong tool and 2) You've put your Model in the Actions. 1) Cactus is a simple test framework for unit testing server-side java code. It uses JUnit and extends it. It's primary goal is to be able to unit test server side java methods which use Servlet objects such as HttpServletRequest, HttpServletResponse, HttpSession etc. http://jakarta.apache.org/commons/cactus/ HttpUnit is a Java library for the automatic stimulation and testing of web applications - which is supposed to be complimentary to Cactus. http://sourceforge.net/projects/httpunit I haven't used these tools, but I'm about to download them and try them out. Also I know Struts is in the process of setting up Cactus test suites so it sounds like is more appropriate than JUnit for this environment. 2) If you succeed in separating your Model from the controller then you should end up with a set of small Action classes. Testing your model outside of the servlet enviornment should then be pretty straight forward. This is what we've done and it works well. Niall -Original Message- From: Mikkel Bruun [mailto:[EMAIL PROTECTED]] Sent: 17 May 2001 10:02 To: '[EMAIL PROTECTED]' Subject: Suggestion:Taking the Servlet out of Action and ActionForm Hi guys, Here's a little design suggestion. I don't know if you have already discussed this. As we all know Action and ActionForm makes use of parts of the Servlet API (HttpRequest). This ties the execution of Action and ActionForm to a servlet enviroment. This is not bad, but (imho) it isn't good either... * We are not able to test our Actions in other enviroments (JUNIT for instance) * It's not possible to port our Action and ActionForm implementations to other types of applications (applet, console) A couple of month ago I implemented my own Model2 framework that worked with a socalled RequestContext. The RequestContext contained three HashSet's, representing request-, session and applicationattributes In the Servlet's service (post/get) method we would populate the RequestContext with all request, session and applications attributes and pass it along the our viewvalidator (in this case an ActionForm object), that would extract the needed parameters and react to them (this could still be done with reflection as in struts). Any output from the validation would then be placed in the RequestContext's Collection (as a proxy to the *real* HttpRequest, HttpSession, etc, objects). If the validation was succesful the Servlet would then pass the RequestContext to a Command (or Action). The command would then extract it needed parameters and work on them. Once again, output would be place in the RequestContext's representation of Request, Session and Application. When the Command (or Action) was completed, the Servlet would iterate through the RequestContext and place all the attributes into their respective scope. The important point here is that the RequestContext wasn't tied to the Servlet API, although it could be initialized with HTTPRequest as parameter. By doing the above we were able to create validations and actions that we could easily test and reuse. What we usually did was that we created JUNIT testcases where we created instances of RequestContext and passed it to our Actions and eveluated the return values...These JUNIT cases could then be run from anywhere. We actually had our deployment done by Ant, and our deployment scripts would run all our testcases before deploying... We could actually test all of our application from the commandline... Just my two cents... Mikkel Bruun
RE: Problem with dynamic form elements
There are quite a few messages in the archive about this: http://www.mail-archive.com/struts-user%40jakarta.apache.org/ A couple of messages from a recent thread: http://www.mail-archive.com/struts-user@jakarta.apache.org/msg07656.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg07767.html Niall -Original Message- From: Prior, Simon [mailto:[EMAIL PROTECTED]] Sent: 17 May 2001 12:50 To: '[EMAIL PROTECTED]' Subject: Problem with dynamic form elements Importance: High Hi Guys, I have a question about dynamic form elements that I was hoping someone could answer. Basically, I have a page I populate with elements from a database where the number of entries is unknown. For each of the rows retrieved, I extract some information and create an entry in a table on the page. Each of the rows has a text box associated with it - also generated dynamically. An Iterator tag is used to create the rows in the table and hence an index for each of the text box elements. My question is this, when I enter information into the text boxes, I would like this reflected onto my actionform automatically by Struts. However, because I don't know how many text boxes will be present on the page, I can't provide set methods for each one. So how is it done? Thanks in advance, Simon.
RE: html:image bug?
You can look at the history of changes to Struts throug CVS Web, for ImageTag: http://jakarta.apache.org/cvsweb/index.cgi/jakarta-struts/src/share/org/apac he/struts/taglib/html/ImageTag.java According to the entries this bug was fixed on 27/02/2001, so you need a nightly build after that to correct your problem. Niall -Original Message- From: Nathan Coast [mailto:[EMAIL PROTECTED]] Sent: 17 May 2001 15:03 To: struts-user Subject: html:image bug? Hi %@ taglib uri=/WEB-INF/tld/struts-html.tld prefix=html % html:image alt=submit style=cursor:hand src=/img/but_submit.gif / results in this html being generated: input type=image name= src=/img/but_submit.gifalt=submit style=cursor:hand obvious problems with name= and src=/img/but_submit.gifalt=submit Can anyone confirm if this is a bug? had a look at bugzilla but couldn't find any matching bugs. Cheers Nathan
Form Processing
Perhaps there are some ideas here that could be used in Struts? Facilitate form processing with the Form Processing API: http://www.javaworld.com/jjw/javtut_nl/jw-04-2001/jw-0427-forms.html Opinions? Niall winmail.dat
RE: Suggestion:Taking the Servlet out of Action and ActionForm
Mikkel OK I agree, its never so black white and your user example looks fine to me. I'm wondering about your inner controller - sounds like some great integrated framework, in which case I agree its probably a level of abstraction I wouldn't want to go to. But what about lots of small controllers which tie together your logic outside the action. Anyway, I was probably misleading in saying thats what we've done. What I have actually done is this: We have sub-classed Action and created some abstract standard classes, our database action does something like this: 1) Get a database connection 2) Create a Transport object and store the ActionMapping, HttpServletRequest, HttpServletResponse Connection. 3) Set the default nextAction to success 4) call a processForm(ActionForm, Transport) method (implemented as an abstract method) catching and handling exceptions. 5) Check the Transport object for error messages. If there are errors create ActionErrors and save and if a nextAction returned by the Transport object use it otherwise set the nextAction to failure. 6) Close the Connection 7) Find the mapping for nextAction and forward to it. All out actions then inherit from this ActionFramework class overriding the processForm(ActionForm, Transport) method. This means that our Action classes have no references to the servlet world, meaning we can test them independantly. Now I know straight away you are going to say that I am storing the ActionMapping, HttpServletRequest HttpServletResponse in my Transport object - so far I haven't used them anywhere, it was just in case I ever needed to. Also if I ever do I will try to hide this in a new method in the Transport object. What do you think? Niall -Original Message- From: Mikkel Bruun [mailto:[EMAIL PROTECTED]] Sent: 17 May 2001 20:58 To: 'Niall Pemberton '; '[EMAIL PROTECTED] ' Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm Hi Niall, I not sure I agree with you, although you have som good points. When looking at the MVC pattern we can easily identify two of the elements, namely the view (jsp) and the model (usually persistent object)... However, where is our controller??? As you point out, in the struts context the controller would be (partly) the Action, and probably some kind of Facade pattern towards the Model... However, in the classic sense of the MVC, the Controller should be reusable between many applications, and the Action dependence to the Servlet API doesn't (strictly speaking) make this possible. The solution to this is ofcourse to build a inner Controller, with close ties to the Model, such as an Facade or a (none Servlet specific) Command. However, I Feel that this just introduces another level of abstraction, and this abstraction should/could be made by the Action To give you a clue of the granularity of my Actions I give you the following example, please comment and tell if you think I have to much Model in it, and if, how to avoid it. This is probably not the best example, but here it comes... My Current Project deals with financing...Users has to LogOn to the System Model : User Controller: LogOnAction The Action makes use of an UserModelFacade. The UserModelFacade has a getUser(String uname, String pw) method... Pseudocode: User theUser= UserModelFacade.getInstance().getUser(name,pw); if(theUser==null) return(mappings.findMapping(failure) request.getSession().setAttrubute(myUser, theUser); return(mappings.findMapping(succes) This is the basic architecture and strategy we will be using in the development. When I said that this was a bad example, its because it only access the Model once... But some of our processes is more complicated than that... Sometimes we need to get the CurrentUser get other possible customers in the household get number of cars in the household get the new car make a finance calculation based on the above The following will result is 20-30 lines of code in the Action. LOC's I would like to be able to reuse... I haven't heard of Cactus or HttpUnit before this thread, and I will surely look into them (souds like great tools) nice thread btw ;-) regards Mikkel -Original Message- From: Niall Pemberton To: [EMAIL PROTECTED] Sent: 17-05-2001 17:11 Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm I don't agree - Actions are part of the controller in MVC and need access to the servlet API to do thing such as retrieving and storing objects under the appropriate context. Sounds to me like 1) Your using the wrong tool and 2) You've put your Model in the Actions. 1) Cactus is a simple test framework for unit testing server-side java code. It uses JUnit and extends it. It's primary goal is to be able to unit test server side java methods which use Servlet objects such as HttpServletRequest, HttpServletResponse, HttpSession etc. http
RE: Can an Action forward to another Action?
I don't think its a new feature we do this, just specifiy path=something.do in the forward for your action. Niall -Original Message- From: Seth Ladd [mailto:[EMAIL PROTECTED]] Sent: 17 May 2001 22:07 To: [EMAIL PROTECTED] Subject: Can an Action forward to another Action? Hello, I thought I saw this functionality added into Struts recently, and went to search the mailing list archives, but couldn't find it. I'm not sure if I made this up or not. :) Can an Action forward right to another action? If not, is there a good way to accomplish this? Thanks for your hints and tips, Seth
RE: Suggestion:Taking the Servlet out of Action and ActionForm
Michael, First thing to say is we are only just starting to devlop our first Struts app after first prototyping vanilla Struts and then trying out various customizations to create a more productive environment. I try to answer your points in the message below. -Original Message- From: Michael Binette [mailto:[EMAIL PROTECTED]] Sent: 19 May 2001 20:18 To: [EMAIL PROTECTED] Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm Niall (and anyone else who has done something similar), I have been looking into doing a similar thing as you have done, sub-classing Action and creating an abstract execute method or as you have done, an abstract processForm method. The main reason was to eliminate the handling of HttpServletRequest, HttpServletResponse, current action, next action, etc. What types of things are you using the Transport object for? Do you have one generic Transport object for your entire app? You mention that your Action classes do not reference any Servlet methods. How do you handle putting or getting things from request scope or session scope such as a logged in user object? So far we have one Transport object for the entire app (although most of it isn't yet written!). It contains mechanism for getting a Connections object, storing error messages and altering the control flow (if success and failure are not enough). Addtionally I have also provided getters/setters for HttpServletRequest, HttpServletResponse ActionMapping in case I meet a scenario I have to access them - although I may hide these by adding appropriate methods in the future e.g. getUser() could access the HttpServletRequest to pass back a User object. Currently the only thing we plan to store in session scope is a User object and currently we have a separate logon action that doesn't inherit from our standard action - we haven't finished developing it yet and I think I'm going to do what I said in the previous paragraph and put a setUser()/getUser methods in the Transport object. Besides the User, the only other things we plan for are Connections and the ActionForm. Connections are being handled by a generic Action and the Transport object. I have two generic actions - one that requires a Database connection, one that doesn't. When you have a form that takes user input, do you use the same Action class for setting up that form as well as for the submit action of that form? We have run into a lot of cases where I have one action class to setup a form, such as a User Edit Profile screen. Then, I use a second action class to save the User. This gives me something like EditUser.do and SaveUser.do, both going to separate Action classes. Yes. It seems like there are a lot of cases where you have two actions view and submit. I was thinking about handling those two scenarios in my sub-classed Action class, calling processView or processSubmit automatically. Have you done anything like that or does it sound reasonable? Yes, but I think its more complex. If you just consider database update I see (so far) the following scenarios: - Query a single row - Query a list of rows - Master Detail Query - Create a single row - Create children for a parent - Update a single row - Update a Master Detail - Delete a single row - Delete a Master Detail On the query side you need to specify the query and criteria, map from the DB to the view and forward to the correct JSP. On the update side you need validation, mapping to the database and forwarding to the correct query action when successful. Probably there are more but I hope this will cater for most. -- Thanks, Michael Binette -Original Message- From: Niall Pemberton [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 6:06 PM To: [EMAIL PROTECTED] Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm Mikkel OK I agree, its never so black white and your user example looks fine to me. I'm wondering about your inner controller - sounds like some great integrated framework, in which case I agree its probably a level of abstraction I wouldn't want to go to. But what about lots of small controllers which tie together your logic outside the action. Anyway, I was probably misleading in saying thats what we've done. What I have actually done is this: We have sub-classed Action and created some abstract standard classes, our database action does something like this: 1) Get a database connection 2) Create a Transport object and store the ActionMapping, HttpServletRequest, HttpServletResponse Connection. 3) Set the default nextAction to success 4) call a processForm(ActionForm, Transport) method (implemented as an abstract method) catching and handling exceptions. 5) Check the Transport object for error messages. If there are errors create ActionErrors and save and if a nextAction returned by the Transport object use it otherwise set
RE: Suggestion:Taking the Servlet out of Action and ActionForm
Good point, were still developing our first Struts system. The Transport object could just store the DataSource, retrieved from the servlet context and let the actions get and close connections from the Transport object, if thats an issue for you. With the number of users we are planning for and the processing most of our actions do, I don't think this will be an issue - we certainly won't have any 3 hour reports. If we do though they would probably deserve some individual coding. Niall -Original Message- From: Hicks, James [mailto:[EMAIL PROTECTED]] Sent: 19 May 2001 21:14 To: '[EMAIL PROTECTED]' Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm I see one problem with Niall's Transport object. The Transport has a reference to a Connection object. This could cause severe scalability issues in the future. Let's say for instance you are using a connection pool with an initial 5 connections and a max of 20. If your Action.perform method does a lot of processing and you have a high traffic sight you could run out of connections very fast. The way I would recommend is using a Singleton to get a database Connection from the pool, this way you could release it when you don't need it. For example, your Action.perform(..) is responsible for getting info from a database, and drawing a graph to visually display the data. Let's say there are 5 million records returned from the query. The records hold data to determine how many hours an employee has worked this month. You want to create comparison reports for each employee, department and location. For the purpose of the example, the reports would take over 3 hours. With Niall's implementation, you would have to keep that database connection around for the entire time. If you had direct access to the pool, you could release the connection after the query was finished. This would allow someone else to use the connection. Now in real life, you probably wouldn't grab all 5 million records at once. Even if you did do over 100 queries on the database, if you were releasing the Connection when it wasn't used and getting another when needed, the overall application speed would be a lot faster than if you were to keep the connection around. Just My Opinion James Hicks -Original Message- From: Michael Binette [mailto:[EMAIL PROTECTED]] Sent: Saturday, May 19, 2001 2:18 PM To: [EMAIL PROTECTED] Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm Niall (and anyone else who has done something similar), I have been looking into doing a similar thing as you have done, sub-classing Action and creating an abstract execute method or as you have done, an abstract processForm method. The main reason was to eliminate the handling of HttpServletRequest, HttpServletResponse, current action, next action, etc. What types of things are you using the Transport object for? Do you have one generic Transport object for your entire app? You mention that your Action classes do not reference any Servlet methods. How do you handle putting or getting things from request scope or session scope such as a logged in user object? When you have a form that takes user input, do you use the same Action class for setting up that form as well as for the submit action of that form? We have run into a lot of cases where I have one action class to setup a form, such as a User Edit Profile screen. Then, I use a second action class to save the User. This gives me something like EditUser.do and SaveUser.do, both going to separate Action classes. It seems like there are a lot of cases where you have two actions view and submit. I was thinking about handling those two scenarios in my sub-classed Action class, calling processView or processSubmit automatically. Have you done anything like that or does it sound reasonable? -- Thanks, Michael Binette -Original Message- From: Niall Pemberton [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 6:06 PM To: [EMAIL PROTECTED] Subject: RE: Suggestion:Taking the Servlet out of Action and ActionForm Mikkel OK I agree, its never so black white and your user example looks fine to me. I'm wondering about your inner controller - sounds like some great integrated framework, in which case I agree its probably a level of abstraction I wouldn't want to go to. But what about lots of small controllers which tie together your logic outside the action. Anyway, I was probably misleading in saying thats what we've done. What I have actually done is this: We have sub-classed Action and created some abstract standard classes, our database action does something like this: 1) Get a database connection 2) Create a Transport object and store the ActionMapping, HttpServletRequest, HttpServletResponse Connection. 3) Set the default nextAction to success 4) call a processForm(ActionForm
RE: New ActionMapping Class
Michael You need to use a set-property tag is Struts-config.xml For example: action path=/this name=myForm type =myPackage.myAction forward name=success path=/next.jsp/ forward name=fail path=/prev.jsp/ set-property property=processAction value=whatever/ /action Niall -Original Message- From: Michael Binette [mailto:[EMAIL PROTECTED]] Sent: 22 May 2001 23:53 To: Struts-User Subject: New ActionMapping Class I created a new GenericActionMapping class that extends ActionMapping. I added one property, processAction with public getter and setter methods for it. I then set the mapping property in web.xml for the struts Action servlet to my new GenericActionMapping class. The log when I run TomCat correctly shows it using my new GenericActionMapping class. But, if I add processAction=whatever to my struts-config.xml, within the action element, I get a SAXParseException, Attribute processAction is not declared for element action. How do I get this to work? -- Thanks, Michael Binette
RE: template and I18N
1. This was answered before. See following message:
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg05207.html
2. IMHO avoid scriptlets.
Niall
-Original Message-
From: Gregor Rayman [mailto:[EMAIL PROTECTED]]
Sent: 30 May 2001 13:12
To: [EMAIL PROTECTED]
Subject: template and I18N
Hi all,
I've just started to use Struts and I have some questions:
1. How can I use the I18N features in the template tags?
In my template.jsp I've got the following tag:
titletemplate:get name='title'//title
In the page using this teplate the following:
template:put name='title' content='Kalkulation' direct='true'/
I'd like to replace the German text 'Kalkulation' with its
key e.g. 'app.title.calculation' Is there a nice way to do this?
2. How can I use use the I18N features in Struts directly
in Java Scriplets?
Sometimes I need the translated texts in scriplets. What is
the best way to access them?
Now I am using this aproach:
%
MessageResources resources =
(MessageResources) pageContext.getAttribute(
Action.MESSAGES_KEY, PageContext.APPLICATION_SCOPE);
Locale locale =
(Locale) pageContext.getAttribute(
Action.LOCALE_KEY, PageContext.SESSION_SCOPE);
if (null == locale) {
locale = request.getLocale();
}
String myText = resources.getMessage(locale, app.the.text,key);
%
Thanks for an answer
--
gR
RE: Help me defend Struts taglibs!!!
I submitted an if/else and switch/case set of tags a couple of weeks ago under the Struts developer list. http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01372.html It uses three tags If, Then Else (based on existing Struts CompareTagBase logic) logic:if op=GreaterThan name=testbean property=doubleProperty value=400 logic:then Property Greater Than Value /logic:then logic:else Property Not Greater Than Value /logic:else /logic:if Does this come under the really ugly category or will you consider it for Struts? Niall -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: 31 May 2001 04:18 To: '[EMAIL PROTECTED]' Subject: RE: Help me defend Struts taglibs!!! On Thu, 26 Apr 2001, Scott Cressler wrote: One thing this argument might come down to is why custom tags, especially for if...else stuff (which, BTW, IMHO is not handled real well by the struts tags...would be nicer to have more flexibility in the conditions you can check and to have the ability to do else, rather than logic:equal.../logic:equallogic:notEqual.../logic:notEqual...but that's another discussion :-). In other words, if it is so easy to just slap some Java in their to do some conditional stuff, why use a clumsy tag. It turns out to be surprisingly difficult to come up with syntax for an else construct that is legal XML syntax and isn't really ugly. There's currently work going on in the JSP Standard Tag Library effort (JSR-052) to create tags that will eventually be known to all containters in the same way that tags like jsp:useBean are -- which will also deal with a lot of the performance related concerns. It looks like there will be reasonable ways to do switch and if-else type processing with them. In the mean time, we can reconsider adding an else capability in Struts 1.1, if someone can come up with a good syntax. Craig
RE: Why does struts-documentation have to be deployed?
I
believe It's calling init() twice because you have two Struts Applications in
your webapps directory - the Struts Example and Admin - both initializing their
own ActionServlet. I went to have a look at Admin because, I only glanced at it
a while back - but couldn't find it so I must have deleted it - but thats what
it looks like.
I
don't really understand your point about the output -I don't get the
method names output
(i.e.##org.apache.struts.action.ActionServlet initApplication()) but
it looks OK to me - init() calls the following methods which are in your output,
except the first three:
initActions()
initInternal()
initDebug()
initApplication()
initMapping()
initUpload()
initDataSources()
initOther()
initServlet()
-Original Message-From:
Jonathan [mailto:[EMAIL PROTECTED]]Sent: 31 May 2001
22:57To: [EMAIL PROTECTED]Subject: Why does
struts-documentation have to be deployed?
I have the strus classes already in the classpath
with out the struts.jar I shouldnt need the struts-documentation.war
file
I ask this because I cant figure out what struts
is doing when the ActionServlet is loaded. Below is my own printout
using weblogic. Notice how it calls init() twice ??!! Also notice
that the first method called is initApplication() ? Anyone know
why?
log file:
C:\bea\wlserver6.0sp1\.\config\mydomain\logs\weblogic.logMay 31, 2001
5:45:44 PM EDT Info Logging Only log messages of
severity "Error" or worse will be displayed in this window. This can be
changed at Admin Console mydomain Servers myserver
Logging General Stdout severity
threshold##org.apache.struts.action.ActionServlet
initApplication()##org.apache.struts.action.ActionServlet
initMapping()##org.apache.struts.action.ActionServlet
initDigester()resolveEntity('-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN',
'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')Not
registered, use system identifierresolveEntity('-//Apache Software
Foundation//DTD Struts Configuration 1.0//EN',
'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')Not
registered, use system identifierNew
org.apache.struts.action.ActionFormBeanSet
org.apache.struts.action.ActionFormBean propertiesCall
org.apache.struts.action.ActionServlet.addFormBean(ActionFormBean[logonForm])##org.apache.struts.action.ActionServlet
addFormBean()Pop org.apache.struts.action.ActionFormBeanNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesNew
org.apache.struts.action.ActionForwardSet
org.apache.struts.action.ActionForward propertiesCall
org.apache.struts.action.ActionMapping.addForward(ActionForward[success])Pop
org.apache.struts.action.ActionForwardCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/logon,
type=com.vnu.common_beans.LogonAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/addFormBean,
type=org.apache.struts.actions.AddFormBeanAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/addForward,
type=org.apache.struts.actions.AddForwardAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/addMapping,
type=org.apache.struts.actions.AddMappingAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/reload,
type=org.apache.struts.actions.ReloadAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/removeFormBean,
type=org.apache.struts.actions.RemoveFormBeanAction])##org.apache.struts.action.ActionServlet
addMapping()Pop org.apache.struts.action.ActionMappingNew
org.apache.struts.action.ActionMappingSet
org.apache.struts.action.ActionMapping propertiesCall
org.apache.struts.action.ActionServlet.addMapping(ActionMapping[path=/admin/removeForward,
RE: Multipage forms and validation
David, I see your on the 1.1 ToDo list as a volunteer for Standard Validations and Client Side Validations - is it likely your validation framework is going to be adopted for Struts - and if so how close is what you're offering now to what Struts will have in 1.1? I'm just wondering whether to plough on with what we've got or wait for what might be coming in Struts. Niall -Original Message- From: David Winterfeldt [mailto:[EMAIL PROTECTED]] Sent: 31 May 2001 23:32 To: [EMAIL PROTECTED] Subject: Re: Multipage forms and validation I've done some work on a validation framework for Struts that is based on defining rules in an xml file. Right now it depends on associating a field with a page and setting a variable in the JSP page to set what page you are on. I had a long discussion with someone on how to make it not depend on associating fields with a page so it was separated from the view, but I haven't had time to finish doing that. The biggest problem is that if you have a session scope bean then you still absolutely have to know if there is a checkbox field on the page so you can reset it. The best idea to get away from page numbers was to have a custom ActionForward for each page and pass in the checkbox fields to be reset along with the action. Here is the url for what I currenty have working. There is a multi-page example in the validator.war and jdbc-validator.war in the webapps directory. http://home.earthlink.net/~dwinterfeldt David Winterfeldt --- Lukasz Kowalczyk [EMAIL PROTECTED] wrote: Hi. I'm trying to employ Struts to help me build multi-page forms. Those forms consist of all kinds of inputs, including multipart. The questions are as follows: 1. How can I validate forms which I know will never set all of the required elements at a time since the required elements can span multiple pages? I could check which submit was clicked and then validate just a subset of form elements but I think it's not very Struts-oriented, and secondly this makes validate() method dependent on specific placement of form inputs (when I decide to move some field to another page I have to modify validate()). 2. Can I use the same Action class to handle multipart and non-multipart request? Will performance hurt because of this? -- £ukasz Kowalczyk __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/
RE: Multiple Forwards
Hans,
Comments in the text below.
Niall
-Original Message-
From: Hans Bure [mailto:[EMAIL PROTECTED]]
Sent: 14 June 2001 17:40
To: [EMAIL PROTECTED]
Subject: Multiple Forwards
Hi all,
I am a relatively new struts user, so if the question I'm asking has been
answered before, I appologize ahead of time.
What I'm trying to do, is create a framework integrated with struts that,
among other things, allows users to set up multiple forwards dependent on
the broswer type. This could be Netscape, IE, WAP browser, or others.
What I would like to do is something like the following in the
struts-config.xml file:
...
action name=test
...
forward name=success browser=IE path=/ie/test.jsp/
forward name=success browser=NS path=/ns/test.jsp/
forward name=success browser=WAP path=/wap/test.jsp/
...
/action
...
You can't have multiple forwards with the same name because they are stored
in a HashMap which uses the name as the key - so they will just overwrite
each other.
The reasoning behind this, would be to create an additional
attribute that
could be used by my framework internals that determines the browser and
calls the correct JSP for the user automatically.
Something like:
...
return myMapping.findForward(success);
...
Which calls into a wrapper class that I create and determines the
browser,
then calling the appropriate JSP as defined in the config file.
This makes
it very simple for the user, as he only needs to define a series of
'success's, and the Action code is simple as defined above.
Now, obviously, adding an additional attribute to the forward
above is not trivial.
Creating your own custom ActionForward is straight forward, but I don't
think it gives you much benefit.
Extend ActionForward and add the addtional properties you require.
/* CustomActionForward Class ** START **/
public Class CustomActionForward extends ActionForward {
private String browser;
public void setBrowser(String browser){
this.browser = browser;
}
public String getBrowser(){
return browser;
}
}
/* CustomActionForward Class ** END **/
Then you need to tell Struts to use your CustomActionForward.
In the servlet entry in the web.xml file add the following init-param
init-param
param-nameforward/param-name
param-valuemyPackage.CustomActionForward/param-name
/init-param
Then in your struts-config.xml file use set-property to initialise your
addtional properties:
action
forward name=ie_success path=/ie/test.jsp
set-property property=browser value=ie/
/forward
forward name=ns_success path=/ns/test.jsp
set-property property=browser value=ns/
/forward
forward name=wap_success path=/wap/test.jsp
set-property property=browser value=wap/
/forward
/action
Obviously this is not very elegant and I you probably won't want to do this.
So my question, is has anyone seen anything like this, and is
there a way I haven't thought of to do this within the current struts
framework?
One thought I've had would be to do the following:
forward name=ie_success path=/ie/test.jsp/
forward name=ns_success path=/ns/test.jsp/
forward name=wap_success path=/wap/test.jsp/
This would work and not require many changes to the framework,
but I would
rather not do this, as it would make things very difficult for my
users to create their own actions.
Personally this doesn't look any more difficult for you user than what you
are proposing below.
Another possibility is the following:
forward name=success path=test.jsp /
browserforward name=success browser=ie path=/ie/test.jsp /
browserforward name=success browser=ns path=/ns/test.jsp /
browserforward name=success broswer=wap path=/wap/test.jsp /
In this case, I would need to create another XML entry that kept
all of the
'success' forwards for each action in its own little HashTable, much like
the normal forwards, except keyed by a combination of the name and the
browser attributes.
I honestly don't know how difficult this would be, but it seems like the
best solution I've come up with so far. One obvious drawback to
this one is
that the struts DTD would need to be altered to include the
'browserforward'
element. I am not sure of the implications of this.
It would be a pain every time you took a new release of Struts - I wouldn't
do this.
Any thoughts?
If you don't mind the constraints it imposes how about this for a solution:
For forwards which are browser specific create your entries in
struts-config.xml as follows:
forward name=success path=/$browser$/test.jsp/
Then in your action you need to do something along the following lines:
// Determine the Browser being used
String browser = ?
// Get the ActionForward
ActionForward origForward = mapping.findForward(success);
// replace /$browser$ in the path with the browser
String
RE: need some help.......
Title: need some help... M...the iterator doesn't appear to becreating your "jas" bean from the elements of your array - the question is why? 1) Have you defined the logic taglib at the top of your jsp? %@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" % 2) Does the array returned by your getMbeanOper() method contain any nulls? Also...I've just noticed...are you saying the getAttr() method returns a String array - meaning you have a grid situation? If so you need an iterate within an iterate. Haven't done that but there are messages in the archive which talk about it. Niall -Original Message-From: Jiten Mohanty [mailto:[EMAIL PROTECTED]]Sent: 15 June 2001 00:30To: [EMAIL PROTECTED]Subject: RE: need some help... Niall Thanks for a quick response.I tried but got the following error. javax.servlet.ServletException: Cannot find bean jas in scope null Jiten -----Original Message-From: Niall Pemberton [mailto:[EMAIL PROTECTED]]Sent: Wednesday, June 13, 2001 5:18 PMTo: [EMAIL PROTECTED]Subject: RE: need some help... "jas" is not in "session" scope - the iterator is creating it for each iteration (must be page scope?) - try it without the "scope": bean:write name="jas" property="attr"/ Niall -Original Message-From: Jiten Mohanty [mailto:[EMAIL PROTECTED]]Sent: 14 June 2001 23:57To: [EMAIL PROTECTED]Subject: need some help... Hi folks I am trying to iterate through a array of objects.Here is the code.. logic:iterate id="jas" name="countBeanForm" property="mbeanOper" type="Ipseal.JbossOperationForm" scope="session" td align="center" bean:write name="jas" property="attr" scope="session"/ /td /logic:iterate property "mbeanOper" : returns array[objects] Each Object has a property called Attr[String](set get).I want to display the each String in Attr[ ].Whe I run the code, i get the following error.. Error: 500 Location: /ipseal_demo/bean_count.jsp Internal Servlet Error: javax.servlet.ServletException: Cannot find bean jas in scope session at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459) at _0002fbean_0005fcount_0002ejspbean_0005fcount_jsp_44._jspService(_0002fbean_0005fcount_0002ejspbean_0005fcount_jsp_44.java:299) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) and on.. Can some body help on this. Jiten Software Enginer
RE: need some help.......
Title: need some help... "jas" is not in "session" scope - the iterator is creating it for each iteration (must be page scope?) - try it without the "scope": bean:write name="jas" property="attr"/ Niall -Original Message-From: Jiten Mohanty [mailto:[EMAIL PROTECTED]]Sent: 14 June 2001 23:57To: [EMAIL PROTECTED]Subject: need some help... Hi folks I am trying to iterate through a array of objects.Here is the code.. logic:iterate id="jas" name="countBeanForm" property="mbeanOper" type="Ipseal.JbossOperationForm" scope="session" td align="center" bean:write name="jas" property="attr" scope="session"/ /td /logic:iterate property "mbeanOper" : returns array[objects] Each Object has a property called Attr[String](set get).I want to display the each String in Attr[ ].Whe I run the code, i get the following error.. Error: 500 Location: /ipseal_demo/bean_count.jsp Internal Servlet Error: javax.servlet.ServletException: Cannot find bean jas in scope session at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459) at _0002fbean_0005fcount_0002ejspbean_0005fcount_jsp_44._jspService(_0002fbean_0005fcount_0002ejspbean_0005fcount_jsp_44.java:299) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) and on.. Can some body help on this. Jiten Software Enginer
RE: dynamic links in struts....
Rather than storing the message key in a bean, can't you convert the key to a message and store the message in the bean - then you cna just do a bean:write. If thats not appropriate - write your own tag to do it. Niall -Original Message- From: Torsten Terp [mailto:[EMAIL PROTECTED]] Sent: 18 June 2001 11:19 To: [EMAIL PROTECTED] Subject: RE: dynamic links in struts Hi, You did understand me correctly, infact the code below was exactly what i wanted to avoid :-) I just thought that there were some other way of doing it that i might have overlooked (it has happend before :-) ...anyways, thanks for the response! ^terp -Original Message- From: Jon.Ridgway [mailto:[EMAIL PROTECTED]] Sent: Monday, June 18, 2001 12:09 PM To: [EMAIL PROTECTED] Subject: RE: dynamic links in struts Hi, If I understand the question correctly, then you would have to put your dynamic message key into a scripting variable and use a scriplet. This isn't very nice, as the point of struts it to remove scriplets from our jsps, but... bean:define id='key' name='bean name' property='method name'/ html:link page=/donor/Select.do paramName=row paramId=key paramProperty=donor bean:message key=%=key%/ /html:link Jon. -Original Message- From: Torsten Terp [mailto:[EMAIL PROTECTED]] Sent: 18 June 2001 10:47 To: [EMAIL PROTECTED] Subject: RE: dynamic links in struts ahh of course thats how to play it thank you!!! Another problem now occurs. If I need to use the bean:message in name of the link, i.e., html:link page=/donor/Select.do paramName=row paramId=key paramProperty=donor bean:message key=whatever/ /html:link and this key value should be dynamic too, how do I accomplish this?? ^torsten -Original Message- From: Jon.Ridgway [mailto:[EMAIL PROTECTED]] Sent: Monday, June 18, 2001 11:06 AM To: [EMAIL PROTECTED] Subject: RE: dynamic links in struts Hi, Have a look at this snip provided by Ted Husted a couple of days ago. Note the use of the html:link tag. 'Here's a reference snippet from a working page. The bean result has accessors for donor, sortName, email, and website, where donor is a unique key. Here the key is also used as the link text, but any other value from the bean could have been linked instead. This snippet generates links in the form:' /donor/Select.do?key=1234 where result.rows.getDonor() returns 1234 logic:iterate name=result property=rows id=row td align=left html:link page=/donor/Select.do paramName=row paramId=key paramProperty=donor bean:write name=row property=donor filter=true/ /html:link /td td align=left bean:write name=row property=sortName filter=true/ /td td align=left nowrap bean:write name=row property=telephone filter=true/ /td td align=left nowrap font size=1a href=mailto:bean:write name=row property=email/bean:write name=row property=email filter=true//a/font /td td align=left font size=1a href=http://bean:write name=row property=website/ target=_blankbean:write name=row property=website filter=true//a/font /td /tr /logic:iterate Jon.
RE: alternate color support in iterate or subtag
Title: alternate color support in iterate or subtag
I
wrote a tag to do this - you can dowload it from Ted Husted's site
http://www.husted.com/about/struts/resources.htm#contributions
Niall
-Original Message-From: Steve Salkin
[mailto:[EMAIL PROTECTED]]Sent: 18 June 2001
20:35To: '[EMAIL PROTECTED]'Subject:
alternate color support in iterate or subtag
Hi-
I've been thinking about how best to handle alternate colors
for tables. One approach is simple but ugly:
table etc... %
String alternatingColor = "firstColor"; %
logic:iterate name="resultSet" id="element" tr td
class="%=alternatingColor%" bean:write
name="element" property="name"/ /td /tr % if (alternatingColor.equals("firstColor")
{
alternatingColor = "secondColor"; } else { alternatingColor =
"secondColor;
} % /logic:iterate
Now it seems to me that this sort of progression, especially
mod 2 (alternation) must be pretty common. However,
it's not clear how best to handle it in a general way.
For example, some people might want to alternate or progressively move
through icons or something else.
So, rather then write and submit an extension to iterate that
supports something like logic:iterate
name="results" id="element" altClass="firstColor, secondColor"
I wonder instead if perhaps a subtag might be a better design.
Maybe like the following:
logic:iterate name="results" id="element"
logic:progression name="alternatingClass"
value="firstClass, secondClass, thirdClass"/
In this case, code within the iterate would be able to
access the name "alternatingClass" which would evaluate to "firstClass" for i
% 3 == 0, "secondClass" for i % 3 == 1, and so forth.
Even this is sort of ugly though, maybe overdesigned. So if
anyone has some feedback about this, if we can sort out a clean design I'll be
happy to write it.
S-
RE: Contribution: 1) IF, AND, OR, THEN, ELSE, ELSEIF tags 2) SWITCH, CASE, DEFAULT tags
None taken. I dont have a feel for the overhead - could you expand more. Niall -Original Message- From: Wong Kok Wai [mailto:[EMAIL PROTECTED]] Sent: 25 June 2001 06:41 To: [EMAIL PROTECTED] Subject: Re: Contribution: 1) IF, AND, OR, THEN, ELSE, ELSEIF tags 2) SWITCH, CASE, DEFAULT tags No offense, but I feel it is much better in performance to use Java scriptlets for these cases. The overhead of the tags is just too high to justify using them. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: Generic handling of properties
Wait for dynamic properties to arrive in Struts (might be a while) or do it yourself. There are messages in the archive discussing how people have done this. Niall -Original Message- From: Gangadharappa, Kiran [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 00:52 To: '[EMAIL PROTECTED]' Subject: Generic handling of properties hi, In my application contents of the Form are database driven. Is there anyway I could use Struts here? What I mean is I can not pre-define a custom Form class since getter and setters are not completely known initially. Any ideas? Regards Kiran
RE: Is struts really loading the resources?
ActionServlet does not actually load the messages when it starts up. It just uses whatever MessageResources factory it is configured for to create a MessageResources - Struts have provided default concrete implementations of these classes (PropertyMessageResources and PropertyMessageResourcesFactory) and PropertyMessageResources does not actually load the messages until the first getMessage() is issued. You could create your own version of PropertyMessageResources with debugging messages and configure Struts to use it (add a factory parameter to the web.xml file pointing to your MessageResourcesFactory). Also, your properties file should be in your test\WEB-INF\classes directory (or sub-directory depending on the package name) hope this helps Niall -Original Message- From: Bob Byron [mailto:[EMAIL PROTECTED]] Sent: 27 June 2001 18:43 To: [EMAIL PROTECTED] Subject: RE: Is struts really loading the resources? I have verified that, and it is: init-param param-nameapplication/param-name param-valueApplicationResources/param-value /init-param As I read it, that should go to the base directory where all classes are stored, and not traverse down to a specific package. In other words, I have placed ApplicationResources.properties at the same level as the test directory that I mentioned earlier. Really, I would like to know if there is a place in the code that I can debug and print out the exact file name that the system is attempting to open. Is there any way to have Win2000 display a log of files as it opens them? Bob --- Jason Rosenblum [EMAIL PROTECTED] wrote: make sure your web.xml file points to the ApplicationResources file that you're using. the entry looks like this: init-param param-nameapplication/param-name param-valuecom.cnet.app.intranet.app.psr.ApplicationResources/p aram-value /init-param ~Jason -Original Message- From: Bob Byron [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 27, 2001 10:24 AM To: [EMAIL PROTECTED] Subject: RE: Is struts really loading the resources? Yes, I did. It has it in there. Bob --- Marcel Andres [EMAIL PROTECTED] wrote: Bob, Did you make sure, that your jsp-page has the following entry, so it can use the bean:message-tag: %@ page language=java % %@ taglib uri=/WEB-INF/struts-bean.tld prefix=bean % Marcel -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 27, 2001 5:17 PM To: [EMAIL PROTECTED] Subject: Is struts really loading the resources? I am new to struts and trying to get down some of the basics. I am trying to use the command: bean:message key=header.title/ When I do, I get the following exception: javax.servlet.jsp.JspException: Missing message for key header.title I have verified that my ApplicationResources file does contain: header.title=MY TEST Checking the log earlier, I find the following confirmation that the ApplicationResources properties were loaded, or were they: 2001-06-27 09:20:31 - path=/test :action: Loading application resources from resource ApplicationResources The previous log entry mentions nothing about the resource file being found and loaded successfully. Am I missing something? How do I know that they properties file was definately loaded? How can I view the properties that are currently available? I am just not sure what avenue of debugging to pursue at this point. Thank You, Bob Byron __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: concatenating resources files - in which class?
I wouldn't put them anywhere in your code - I'd use some kind of deployment script to concatenate them and copy them to the appropriate directory. Niall -Original Message-From: Jonathan [mailto:[EMAIL PROTECTED]]Sent: 27 June 2001 16:57To: [EMAIL PROTECTED]Subject: concatenating resources files - in which class? Anyone have any suggestions as to where in the code I should concatenate my multiple resource files? I actually would like the resource files to be in the same directoryas the templates to which they pertain (ie in with the jsp files). Assuming I put my jsp's in WEB-INF/pages, I guess I would have to put the WEB-INF in the classpath as well so that the properties files are visible to the ActionServlet.
RE: Problem with resources when extending ActionServlet
I have had no problems doing this - what does your sub-class look like? If you are overriding the init() method, you need to call super.init() to make sure the application resources are initialized. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 27 June 2001 13:21 To: [EMAIL PROTECTED] Subject: Problem with resources when extending ActionServlet The struts documentation states than extending ActionServlet is unproblematic. However, as soon as I do this (regardless of the subclass's functionality), I run into the following exception: Internal Servlet Error: javax.servlet.ServletException: Cannot find message resources under key org.apache.struts.action.MESSAGE at javax.servlet.ServletException.(ServletException.java:161) winmail.dat
RE: html:hidden ....
Either write your own tag which generates a HTML hidden field from a message resource key. or input type=hidden value=bean:message key='TEST'/ name=something Niall -Original Message- From: Michael Skariah [mailto:[EMAIL PROTECTED]] Sent: 27 June 2001 18:55 To: [EMAIL PROTECTED] Subject: html:hidden Hello all, In a html:hidden tag, how can we set a value that is present in the ApplicationResource file. Example: html:hidden property=id value=TEST/ The value TEST should be taken from the resource file. Thanks, Michael.
RE: null pointer error
I dont
think html:text was designed to take a body - in the tld file for the
html:hidden tag the body parameter is set to empty and they both extend
the same parent class (BaseFieldTag).
BaseFieldTag is a child of BaseHandlerTag which extends
BodyTagSupport and BaseFieldTag returns EVAL_BODY_TAG from its
doStartTag() method - but I think this looks like a mistake because its not been
written to process the body - I think it should really return
SKIP_BODY.
My
advice - dont put anything in the body.
Niall
-Original Message-From: Nick Chalko
[mailto:[EMAIL PROTECTED]]Sent: 27 June 2001 19:53To:
[EMAIL PROTECTED]Subject: null pointer error
My jsp page
with the following tag
html:text
property="username" size="20" maxlength="20" value="test"
inside/html:txt
generates the
following java code (from VAJ 3.5.3)
do
{
//
end
out.print(_jspx_html_data[4]);
// begin
[file="C:\\login.jsp";from=(16,0);to=(16,69)]
/* html:text
*/
org.apache.struts.taglib.html.TextTag _jspx_th_html_text_1 = new
org.apache.struts.taglib.html.TextTag();
_jspx_th_html_text_1.setPageContext(pageContext);
_jspx_th_html_text_1.setParent(_jspx_th_html_form_2);
JspRuntimeLibrary.introspecthelper(_jspx_th_html_text_1,
"maxlength","20",null,null,
false);
JspRuntimeLibrary.introspecthelper(_jspx_th_html_text_1,
"property","username",null,null,
false);
JspRuntimeLibrary.introspecthelper(_jspx_th_html_text_1,
"size","20",null,null,
false);
JspRuntimeLibrary.introspecthelper(_jspx_th_html_text_1,
"value","test",null,null,
false);
try
{
int _jspx_eval_html_text_1 =
_jspx_th_html_text_1.doStartTag();
if (_jspx_eval_html_text_1 ==
Tag.EVAL_BODY_INCLUDE)
throw new JspTagException("Since tag handler class
org.apache.struts.taglib.html.TextTag implements BodyTag, it can't return
Tag.EVAL_BODY_INCLUDE");
if (_jspx_eval_html_text_1 != Tag.SKIP_BODY)
{
try
{
if (_jspx_eval_html_text_1 != Tag.EVAL_BODY_INCLUDE) {
// the next nile sets out to
null
out =
pageContext.pushBody();
_jspx_th_html_text_1.setBodyContent((BodyContent)
out);
}
_jspx_th_html_text_1.doInitBody();
do
{
//
end
out.print(_jspx_html_data[5]);
// begin
[file="C:\\login.jsp";from=(25,0);to=(25,0)]
} while (_jspx_th_html_text_1.doAfterBody() ==
BodyTag.EVAL_BODY_TAG);
} finally
{
if (_jspx_eval_html_text_1 !=
Tag.EVAL_BODY_INCLUDE)
out =
pageContext.popBody();
}
}
if (_jspx_th_html_text_1.doEndTag() ==
Tag.SKIP_PAGE)
return;
} finally
{
_jspx_th_html_text_1.release();
}
The proplem
is pageContext.pushBody() returns null which then fails the next time
something is written to out.
Any ideas.
R,
Nick
RE: No Bean found under attribute key
Your referring to a bean of name indexPage but the only thing in the code you've shown named indexPage is a forward. This will not create a bean named indexPage - try setting up an ActionForm and doing something along the follwoing lines: logic:equal name=myForm property=action scope=request value=Display html:text property=server size=16 maxlength=16/ /logic:equal .xml form-beans form-bean name=myForm type=com..MyForm/ /form-beans actionpath=/indexPage form=myForm type=com.niku.cm.IndexPageAction forward name=success path=/index.jsp/ forward name=failure path=/nodata.jsp/ /action -Original Message- From: Rama Krishna [mailto:[EMAIL PROTECTED]] Sent: 27 June 2001 20:07 To: [EMAIL PROTECTED] Subject: No Bean found under attribute key Hi all, I am new to struts and i created a simple jsp and all along with proper modifications to struts-config.xml and when i try to run my jsp i get the above exception. Can anyone tell me what could be the cause??? here is my code .jsp logic:equal name=indexPage property=action scope=request value=Display html:text property=server size=16 maxlength=16/ /logic:equal .xml actionpath=/indexPage type=com.niku.cm.IndexPageAction forward name=success path=/index.jsp/ forward name=failure path=/nodata.jsp/ /action thanks, rama
RE: Indexed Property Population to ActionForm
Dave Hay has modified Struts tags to generate names appropriately. You can download his tags from Ted Husted's site: http://www.husted.com/about/struts/resources.htm#extensions Niall -Original Message- From: Patrick van Leuveren [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 11:57 To: '[EMAIL PROTECTED]' Subject: RE: Indexed Property Population to ActionForm Hi, One of realizing this is by naming the properties according to the naming rules for indexed properties. For example: if you define the property names as field[1], field[2], the HTML code that is renderd could look like this: INPUT TYPE=TEXT NAME=field[1] etc. When the form is submitted, the ActionForm is populated by calling setField ( int, String). In the body of this method you can use this index. Essentially, this does not have to map directly onto an array. One could also choose to use a Collection, or even distinct objects depending on the index. For your example, setting paramName[10], this will do. Success, Patrick -Original Message- From: [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 12:50 PM To: [EMAIL PROTECTED] Subject: Indexed Property Population to ActionForm Hi, Is it possible to populate indexed property to ActionForm. Of course, there should be delimiters in parameters for indexing. For example, paramName$10 will populate to the bean with index 10 in the array paramName in ActionForm, ie. paramName[10]. Here $ is the delimiter for indexing. Regards, Rice )_/9q$l+H=c!E73q$_%@,I http://mail.kimo.com.tw :t 8t %M ,!!E:I b )_ / http://www.kimo.com.tw
RE: beans and scope
You can use request scope by storing the values in hidden fields using the html:hidden tag - that way the values you are not showing get re-populated back into your form when submitted. Additionally to what John said about the default scope - I agree it is session but Struts also supplies two ActionMapping sub-classes which can be used to control the default scope - these are SessionActionMapping and RequestActionMapping - all you have to do is add a mapping attribute to the web.xml and you can have whichever default scope you prefer. init-param param-namemapping/param-name param-valueorg.apache.struts.action.RequestActionMapping/param-value /init-param Niall -Original Message- From: DHarty [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 21:22 To: [EMAIL PROTECTED] Subject: RE: beans and scope Thank you John! Funny thing is, I had changed that in previous attempts. When that didn't work, I must have forgot to put it back. Speaking of request scope, Is there a way to do this (wizard steps) using the request scope, or do I just have to make the action classes responsible for reseting the form to start from scratch? Thanks again David -Original Message- From: John Schroeder [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 4:01 PM To: [EMAIL PROTECTED] Subject: RE: beans and scope Try removing the scope=request line below. The formbean will default to session scope (I believe). If you specify request scope, then the formbean will be accessible on the second page, but not the third... This worked for me after I banged my head against it as well!! !-- Create Project-- actionpath=/projectcreate type=edu.erau.dcm.teammate.action.ProjectCreateAction name=ProjectForm scope=request -- remove this. validate=false input=/admin/project/project_create.jsp forward name=next path=/admin/project/project_add_leader.jsp/ forward name=cancel path=/admin/project/project_admin.jsp/ /action Hope this helps... --John -Original Message- From: DHarty [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 12:57 PM To: [EMAIL PROTECTED] Subject: beans and scope I'm trying to get a series of pages to populate a form ala a wizard interface. Each page enters a chunck of information which is then forwarded to the next page in the sequence. The previous information is dispalyed along with an area to enter the next bit of info. The Problem is that after the information on the second page is entered, the third page doesn't receive the information from the fist page, only the second. The informatoin never makes it into the second pages action class. I made the scope=session, but this still doesn't work. Please help, I've been banging my head against this for days. --first page--- html:form action=/projectcreate scope=session pEnter Project Name: /b html:text name=ProjectForm property=name tabindex=1 / /p pnbsp;/p pbProject Description:/b/p blockquote html:textarea cols=50 name=ProjectForm property=description rows=5 tabindex=2 / /blockquote p align=right html:cancel tabindex=4/ html:submit tabindex=3Next/html:submit /p /html:form -- -second page--- html:form action=/projectaddleader scope=session bAdd Project Leader:/b html:text name=ProjectForm property=newLeader / html:submit / Project Name: bean:write name=ProjectForm property = name / Project Description: bean:write name=ProjectForm property = description/ /html:form -- from stuts-config.xml--- form-bean name=ProjectForm type=edu.erau.dcm.teammate.form.ProjectForm/ !-- Create Project-- actionpath=/projectcreate type=edu.erau.dcm.teammate.action.ProjectCreateAction name=ProjectForm scope=request validate=false input=/admin/project/project_create.jsp forward name=next path=/admin/project/project_add_leader.jsp/ forward name=cancel path=/admin/project/project_admin.jsp/ /action !-- Add Leader to Project -- action path=/projectaddleader type=edu.erau.dcm.teammate.action.ProjectCreateAction name=ProjectForm scope=request validate=false input=/admin/project/project_add_leader.jsp forward name=nextpath=/admin/project/project_verify.jsp/ forward name=finishedpath=/admin/project/project_admin.jsp/ forward name=cancel path=/admin/project/project_admin.jsp/ /action
RE: Generic handling of properties
Kiran, Sorry for the short answer previously. Below are some of the messages that discussed this recently on the struts-dev list - the first message outlines what we did, but a better way (modifying Bean/Property utils rather than Struts tags) was pointed out by others in the thread. http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01485.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01486.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01487.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01488.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01489.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01499.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01500.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg01503.html There are two archives (for the struts-user and struts-dev lists) these are: http://www.mail-archive.com/struts-dev@jakarta.apache.org/ http://www.mail-archive.com/struts-user@jakarta.apache.org/ hope this helps Niall -Original Message- From: Gangadharappa, Kiran [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 17:13 To: '[EMAIL PROTECTED]' Subject: RE: Generic handling of properties Hi Niall, I am kind of new to this mailing list. Any idea where I can find the archives? regards Kiran -Original Message- From: Niall Pemberton [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 4:08 AM To: [EMAIL PROTECTED] Subject: RE: Generic handling of properties Wait for dynamic properties to arrive in Struts (might be a while) or do it yourself. There are messages in the archive discussing how people have done this. Niall -Original Message- From: Gangadharappa, Kiran [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 00:52 To: '[EMAIL PROTECTED]' Subject: Generic handling of properties hi, In my application contents of the Form are database driven. Is there anyway I could use Struts here? What I mean is I can not pre-define a custom Form class since getter and setters are not completely known initially. Any ideas? Regards Kiran
RE: multiple form fields
Hey thats what this list is for - your headaches as valid as anyone elses,
keep sending them until you get a result.
Post all the bits of code in an email - your action form and/or bean(s) and
the jsp - plus when is throwing the Null pointer exception, - in the jsp,
before your page is displaying or afterwards when its trying to populate
back?
Off the top of my head you might be getting null pointer exceptions for a
couple of reasons:
1) If its happening before your page is displayed it might be because there
are nulls in your array/collection/vector - make sure its all
loaded/initialised containing no nulls before you forward to your jsp page.
2) If its happening after you submit your form back (using Daves tags) then
check the scope of your form - if its in session scope you should be OK, if
its in request scope you will need to do something clever to set it up
again. Struts effectively does a getX(index).setY(value) call
Anyway, if you post your code it'll be easier to see whats happening.
You are using Dave's modified tags from husted.com?
Niall
-Original Message-
From: Paul Beer [mailto:[EMAIL PROTECTED]]
Sent: 29 June 2001 00:56
To: [EMAIL PROTECTED]
Subject: RE: multiple form fields
Im still having problems getting this. I just started using struts so
please bear with me here. But can someone please email me
something similar
to the logic-iterate example that cmoes with the example-taglibs demo ? I
am getting null pointer errors and I dont if it is my struts
distribution or
my own inability to grock this
i will try not to toxify this list with any more of this
its just that
if I cant model a formbean w/a grid of data struts is worthless to me,
because my whole world is executing functions w/import tables.
-paul
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 1:54 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: multiple form fields
Paul,
a concrete example using modified tag:
jsp:
logic:iterate id=parameter name=ParametersForm
property=parameterList
.
html:text name=parameter property=value indexed=true
onchange=validate(this)/
.
/logic:iterate
in my form bean (using a vector):
public final class ParametersForm extends ActionForm
{
/**
* The parameter list
*/
private Vector parameterList = new Vector();
/**
* Return the list of parameters
*/
public Vector getParameterList()
{
return(this.parameterList);
}
/**
* Set the list of parameters
*
* @param parameterList The new list
*/
public void setParameterList(Vector parameterList)
{
this.parameterList = parameterList;
}
/**
* Get a particular parameter from the parameterList, based on index
*
* @param index The index of the parameter to retrieve
*/
public Parameter getParameter(int index)
{
return (Parameter)parameterList.elementAt(index);
}
}
Hope that helps,
Dave
Paul Beer [EMAIL PROTECTED] on 06/28/2001
02:32:55 PM
Please respond to [EMAIL PROTECTED];
Please
respond to [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
cc:(bcc: David Hay/Lex/Lexmark)
Subject: RE: multiple form fields
sorry i send the email accidently :
doesnt :
...
INPUT type=text name=qty value=1
INPUT type=text name=qty value=2
INPUT type=text name=qty value=3
...
In your class:
String[] qtys = request.getParameterValues(qty);
defeat the purpose of having a form bean which seems like a kind
of servlet
abstraction of an html form ? i dont really care. I would just
like to see
some sample code that works. I have searched through the quagmire that is
the mail archives and every thread ends w/confusing comments.
-p
RE: multiple form fields (I HATE CTRL-S )
;
}
/**
* Get a particular parameter from the parameterList, based on index
*
* @param index The index of the parameter to retrieve
*/
public SapValidParameter getParameter(int index)
{
return (SapValidParameter)parameterList.elementAt(index);
}
-Original Message-
From: Niall Pemberton [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 5:40 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: multiple form fields
Hey thats what this list is for - your headaches as valid as anyone elses,
keep sending them until you get a result.
Post all the bits of code in an email - your action form and/or
bean(s) and
the jsp - plus when is throwing the Null pointer exception, - in the jsp,
before your page is displaying or afterwards when its trying to populate
back?
Off the top of my head you might be getting null pointer exceptions for a
couple of reasons:
1) If its happening before your page is displayed it might be
because there
are nulls in your array/collection/vector - make sure its all
loaded/initialised containing no nulls before you forward to your
jsp page.
2) If its happening after you submit your form back (using Daves
tags) then
check the scope of your form - if its in session scope you should
be OK, if
its in request scope you will need to do something clever to set it up
again. Struts effectively does a getX(index).setY(value) call
Anyway, if you post your code it'll be easier to see whats happening.
You are using Dave's modified tags from husted.com?
Niall
-Original Message-
From: Paul Beer [mailto:[EMAIL PROTECTED]]
Sent: 29 June 2001 00:56
To: [EMAIL PROTECTED]
Subject: RE: multiple form fields
Im still having problems getting this. I just started using struts so
please bear with me here. But can someone please email me
something similar
to the logic-iterate example that cmoes with the
example-taglibs demo ? I
am getting null pointer errors and I dont if it is my struts
distribution or
my own inability to grock this
i will try not to toxify this list with any more of this
its just that
if I cant model a formbean w/a grid of data struts is worthless to me,
because my whole world is executing functions w/import tables.
-paul
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 1:54 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: multiple form fields
Paul,
a concrete example using modified tag:
jsp:
logic:iterate id=parameter name=ParametersForm
property=parameterList
.
html:text name=parameter property=value indexed=true
onchange=validate(this)/
.
/logic:iterate
in my form bean (using a vector):
public final class ParametersForm extends ActionForm
{
/**
* The parameter list
*/
private Vector parameterList = new Vector();
/**
* Return the list of parameters
*/
public Vector getParameterList()
{
return(this.parameterList);
}
/**
* Set the list of parameters
*
* @param parameterList The new list
*/
public void setParameterList(Vector parameterList)
{
this.parameterList = parameterList;
}
/**
* Get a particular parameter from the parameterList, based on index
*
* @param index The index of the parameter to retrieve
*/
public Parameter getParameter(int index)
{
return (Parameter)parameterList.elementAt(index);
}
}
Hope that helps,
Dave
Paul Beer [EMAIL PROTECTED] on 06/28/2001
02:32:55 PM
Please respond to [EMAIL PROTECTED];
Please
respond to [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
cc:(bcc: David Hay/Lex/Lexmark)
Subject: RE: multiple form fields
sorry i send the email accidently :
doesnt :
...
INPUT type=text name=qty value=1
INPUT type=text name=qty value=2
INPUT type=text name=qty value=3
...
In your class:
String[] qtys = request.getParameterValues(qty);
defeat the purpose of having a form bean which seems like a kind
of servlet
abstraction of an html form ? i dont really care. I would just
like to see
some sample code that works. I have searched through the
quagmire that is
the mail archives and every thread ends w/confusing comments.
-p
RE: multiple form fields (I HATE CTRL-S )
SapValidParameter(orderitemsin_matlgroup,2000));
parameterList.add(8,new
SapValidParameter(orderitemsin_purchdate,2101));
parameterList.add(9,new
SapValidParameter(orderitemsin_currency,USD));
}
/**
* Return the list of parameters
*/
public Vector getParameterList()
{
return(this.parameterList);
}
public String getParameters()
{
return(this.parameterList.toString());
}
/**
* Set the list of parameters
*
* @param parameterList The new list
*/
public void setParameterList(Vector parameterList)
{
this.parameterList = parameterList;
}
/**
* Get a particular parameter from the parameterList, based on index
*
* @param index The index of the parameter to retrieve
*/
public SapValidParameter getParameter(int index)
{
return (SapValidParameter)parameterList.elementAt(index);
}
JSP:
logic:iterate id=parameter name=salesordercreateForm
property=parameterList
html:text name=parameter property=value
indexed=true /
/logic:iterate
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 29, 2001 10:06 AM
To: [EMAIL PROTECTED]
Subject: RE: multiple form fields (I HATE CTRL-S )
Hi Paul. Just got in (tied up this am).
Agree with everything that Niall said. Just wanted to confirm that you
don't
get an error when you actually BUILD Struts? ie you get the error when
you
try
and use the tag, and check that you have copied the struts-html.tld into
your
directory too?
Let me know if you still have probs.
Dave
PS Don't worry about asking the qu's - can all be quite confusing to
start
with!!
Niall Pemberton [EMAIL PROTECTED]
on
06/28/2001 11:31:28 PM
Please respond to [EMAIL PROTECTED]
To: [EMAIL PROTECTED],
[EMAIL PROTECTED]
cc:(bcc: David Hay/Lex/Lexmark)
Subject: RE: multiple form fields (I HATE CTRL-S )
Paul,
1) The reason you're getting null pointer error for the attribute
indexed
is because Dave's tags initialise indexed to null - you have to set it
to
true or false in your jsp.
i.e. html:text name=parameter property=value indexed=true/
2) You seem to be setting up your data incorrectly in your jsp
Typically an action of yours would run off, get some data and
load it into
your ActionForm which then forward to a jsp to display/edit.
I'm not sure why you've got it in your jsp, but anyway what you've done
isnt
right - its creating your vector BUT isntead of putting it in your
actionForm, your storing it as a page scope parameter under the name
ParameterList.
Instead of this:
pageContext.setAttribute(ParameterList, vin,
PageContext.PAGE_SCOPE);
You should be doing something like:
salesordercreateForm.setParameterList(vin);
My suggestion too keep it simple, take that stuff out of your
jsp and put
it
in the constructor of your ActionForm - then you know its
always going to
be
present (dont have to worry about scope). Anyway as you have it at the
moment youre always going to have any empty vector - so you wont see
anything.
i.e. something like
public class SalesOrderCreateForm extends ActionForm {
public SalesOrderCreateForm() {
parameterList.add(0,new
SapValidParameter(orderitemsin_itmnumber,00010));
parameterList.add(0,new
SapValidParameter(orderitemsin_material,TEST));
parameterList.add(0,new
SapValidParameter(orderitemsin_billdate,2101));
parameterList.add(0,new
SapValidParameter(orderitemsin_plant,2000));
parameterList.add(0,new
SapValidParameter(orderitemsin_targetqty,1000));
parameterList.add(0,new
SapValidParameter(orderitemsin_shorttext,TEST));
parameterList.add(0,new
SapValidParameter(orderitemsin_reqdate,2101));
parameterList.add(0,new
SapValidParameter(orderitemsin_matlgroup,2000));
parameterList.add(0,new
SapValidParameter(orderitemsin_purchdate,2101));
parameterList.add(0,new
SapValidParameter(orderitemsin_currency,USD));
}
etc. etc.
3) Rama Krishna's (isnt he a Hindu God?) put up a reply for you about
Vector
or Vectors (havent done that flavour myself), so if you can get that
working
to display your data youre half way there.
Niall
-Original Message-
From: Paul Beer [mailto:[EMAIL PROTECTED]]
Sent: 29 June 2001 03:35
To: Struts-User
Subject: RE: multiple form fields (I HATE CTRL-S )
OK here's my bad code. There are two problems Im try to
resollve here
:
1) i cant iterate through a vector (how do i give the html tag an
enumerator
???)
2) even though i rebuilt struts w/tags from husted.com i get a
null pointer
error for the attribute
RE: beans and scope
Yes it will hang around until the end of your session unless you remove it. Theres an example of this in the strust example SaveRegistrationAction class. session.removeAttribute(mapping.getAttribute()); Niall -Original Message- From: Gangadharappa, Kiran [mailto:[EMAIL PROTECTED]] Sent: 30 June 2001 00:53 To: '[EMAIL PROTECTED]' Subject: RE: beans and scope if it is session scope, When will the bean get destroyed? Does it have to wait till the session is ended? What I mean is , isnt there any way to control the lifetime of this bean say programmatically? -Original Message- From: Niall Pemberton [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 2:35 PM To: [EMAIL PROTECTED] Subject: RE: beans and scope You can use request scope by storing the values in hidden fields using the html:hidden tag - that way the values you are not showing get re-populated back into your form when submitted. Additionally to what John said about the default scope - I agree it is session but Struts also supplies two ActionMapping sub-classes which can be used to control the default scope - these are SessionActionMapping and RequestActionMapping - all you have to do is add a mapping attribute to the web.xml and you can have whichever default scope you prefer. init-param param-namemapping/param-name param-valueorg.apache.struts.action.RequestActionMapping/param-value /init-param Niall -Original Message- From: DHarty [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 21:22 To: [EMAIL PROTECTED] Subject: RE: beans and scope Thank you John! Funny thing is, I had changed that in previous attempts. When that didn't work, I must have forgot to put it back. Speaking of request scope, Is there a way to do this (wizard steps) using the request scope, or do I just have to make the action classes responsible for reseting the form to start from scratch? Thanks again David -Original Message- From: John Schroeder [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 4:01 PM To: [EMAIL PROTECTED] Subject: RE: beans and scope Try removing the scope=request line below. The formbean will default to session scope (I believe). If you specify request scope, then the formbean will be accessible on the second page, but not the third... This worked for me after I banged my head against it as well!! !-- Create Project-- actionpath=/projectcreate type=edu.erau.dcm.teammate.action.ProjectCreateAction name=ProjectForm scope=request -- remove this. validate=false input=/admin/project/project_create.jsp forward name=next path=/admin/project/project_add_leader.jsp/ forward name=cancel path=/admin/project/project_admin.jsp/ /action Hope this helps... --John -Original Message- From: DHarty [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 12:57 PM To: [EMAIL PROTECTED] Subject: beans and scope I'm trying to get a series of pages to populate a form ala a wizard interface. Each page enters a chunck of information which is then forwarded to the next page in the sequence. The previous information is dispalyed along with an area to enter the next bit of info. The Problem is that after the information on the second page is entered, the third page doesn't receive the information from the fist page, only the second. The informatoin never makes it into the second pages action class. I made the scope=session, but this still doesn't work. Please help, I've been banging my head against this for days. --first page--- html:form action=/projectcreate scope=session pEnter Project Name: /b html:text name=ProjectForm property=name tabindex=1 / /p pnbsp;/p pbProject Description:/b/p blockquote html:textarea cols=50 name=ProjectForm property=description rows=5 tabindex=2 / /blockquote p align=right html:cancel tabindex=4/ html:submit tabindex=3Next/html:submit /p /html:form -- -second page--- html:form action=/projectaddleader scope=session bAdd Project Leader:/b html:text name=ProjectForm property=newLeader / html:submit / Project Name: bean:write name=ProjectForm property = name / Project Description: bean:write name=ProjectForm property = description/ /html:form -- from stuts-config.xml--- form-bean name=ProjectForm type=edu.erau.dcm.teammate.form.ProjectForm/ !-- Create Project-- actionpath
RE: Problems with iterate
You need to do two things.
First, you need to generate appropriate names for your input fields. If you
use the current Struts tags then all the occurances of your two fields in
the example below will generate names of firstName and lastName. What
you want is to generate names in the format contactDataVector[x].firstName
and contactDataVector[x].lastName, where x is the index number of the
field. Dave Hay has posted a set of modified Struts tags which generate
these names on Ted Husted's site:
http://www.husted.com/about/struts/resources.htm#extensions - Indexed
Tags
Secondly you need to provide the appropriate getters/setters in your bean
and ActionForm. Obviously in your bean you need setFirstName() and
setLastName() methods - additionally you need the following getter in your
ActionForm:
public ContactData getContactDataVector(int index) {
return (ContactData)(contactDataVector.get(index));
}
Hope this helps.
Niall
-Original Message-
From: Torsten Terp [mailto:[EMAIL PROTECTED]]
Sent: 01 July 2001 19:01
To: Struts user list
Subject: Problems with iterate
Hi,
Sorry if this has been answered before, but i havent been able to
find an answer!
Im using iterate to display a vector containg valueobjects, i.e.,
html:form action=showContacts
logic:iterate id=contacts name=form property=contactDataVector
html:hidden name=contacts property=contactId/
tr
td width=150
html:text name=contacts property=firstName size=20/
/td
td width=150
html:text name=contacts property=lastName size=20/
/td
/tr
...
...
'form' is my struts form bean, 'contactDataVector' is a vector of
'contactData'
objects each containing (among others) the variables 'firstName'
and 'lastName'.
There is no problem in displaying the data, all goes well, but
updating fields
in the form is not working, when i want to save the changes in
the struts action
the vector is null! I can see that making a variable 'firstName'
in the form, results
in a call to its setter method, i.e., i can make it work when
updating a single row,
but i cant manage to get the update to work on the actual
contactData objects in the
vector. ?!?!
Any advices out there??
^terp
RE: NotEqual Tag to compare multiple properties to a value
You cant do that with the struts NotEqualTag you can however with the IF/THEN/ELSE tags I wrote which Ted Husted has posted on his site: http://www.husted.com/about/struts/resources.htm#extensions logic:if name="myForm" property="property1" op="NotEqual" value ="xxx" logic:and name="myForm" property="property2" op="NotEqual" value ="xxx"/ logic:and name="myForm" property="property3" op="NotEqual" value ="xxx"/ logic:then . /logic:then logic:else /logic:else /logic:if Niall -Original Message-From: Matt Raible [mailto:[EMAIL PROTECTED]]Sent: 03 July 2001 17:35To: Struts UserSubject: NotEqual Tag to compare multiple properties to a value Is it possible to use the notEqual tag to compare multiple properties to a single value? I'd like to write code similar to the following logic:notEqual name="myForm" properties="property1,property2" value="" do something if either propertynot equal to "" /logic:notEqual Thanks, Matt P.S. I figured out my issue below - it was an iPlanet bug. For value, I used value="%=""%" and it worked as expected. - Original Message - From: Matt Raible To: Struts User Sent: Monday, July 02, 2001 12:17 PM Subject: NotEqual or Present? I am trying to check if the user entered a value for a search criteria in a results page. My ActionForm sets a propertyto "" if the user did not enter a value. So in the following code, I want to only show it if the property does not equal "". But the following does not work, should it? logic:notEqual name="myForm" property="searchParam" value="" show this if property "searchParam" is not equal to "" /logic:notEqual Thanks, Matt
RE: html:link problem
Rama, Cant you use paramProperty? html:link page=/target.cm paramId=value paramName=myCollectionElement paramProperty=idclick here/html:link Niall -Original Message- From: Rama Krishna [mailto:[EMAIL PROTECTED]] Sent: 05 July 2001 20:10 To: [EMAIL PROTECTED] Subject: html:link problem is this correct html:link page=/target.cm paramId=value paramName=bean:write name='myCollectionElement' property='id'/click here/html:link where myCollectionElement is a collection id is a property in the collection and i want http:///target.cm?value=2 (value of id) i get null when i say req.getParameter(value); in my action class?? any help??? thanks, rama
RE: Where to do the init() for Actions?
ActionServlet is a plain Servlet you can extend it and override the init() method (make sure you call super.init(), so that the standard Struts init(0 stuff is done. Niall -Original Message- From: Andreas Schildbach [mailto:[EMAIL PROTECTED]] Sent: 06 July 2001 18:02 To: [EMAIL PROTECTED] Subject: Where to do the init() for Actions? Is there a similar thing to Servlet.init() in Actions? I want to access EJB's in Actions and have to setup the InitialContext, look up some Bean Remote Interfaces, etc. I don't want to do this every time my Action is called. If I were using a plain Servlet, I would put this stuff into init()... Thanks, - Andreas
RE: session form beans
It doesn't - they will go when the session ends, or you have to explicitly remove them. Niall -Original Message- From: Jerome Jacobsen [mailto:[EMAIL PROTECTED]] Sent: 06 July 2001 20:09 To: [EMAIL PROTECTED] Subject: session form beans Hi, In what cases does the Struts framework remove a Session Form bean from the Session? Is this supposed to be done explicitly by the JSP or Action object writer? Thanks, -Jerome
RE: No Need To Localize
The bean:message tag uses RequestUtils to find a message - this looks for a locale stored in session scope under the key Action.LOCALE_KEY. The usual way for the locale to be stored under this key is using the html:html locale=true/ tag - if you dont use that, then struts will always use the default locale. But...if you are sure you never want an internationalized app then why don't you do away with resource bundles altogether - just put all your messages directly in the jsps? Niall -Original Message- From: David White [mailto:[EMAIL PROTECTED]] Sent: 07 July 2001 17:37 To: [EMAIL PROTECTED] Subject: No Need To Localize We are developing a web application using struts which will not need to be internationalized. Is there some way to tell struts NOT to look for and manipulate Locale's? In other words, there will always be one and only one resource bundle for tha application. Any pointer is appreciated. Thanks, David
RE: indexed properties
Cameron,
Does the Action that is run when you submit the form have CourseList
associated with it?
If that sorts out the issue with not finding CourseList then I think
CourseList should look like this:
public final class CourseList extends ActionForm
{
private ArrayList courseList = new ArrayList(6);
public ArrayList getCourseList() {
return(this.courseList);
}
public void setCourseList(ArrayList courseList) {
this.courseList = courseList;
}
public CourseForm getCourseList(int index) {
return (CourseForm)courseList.get(index);
}
}
Then in your CourseForm bean you need setters for all the properties (i.e.
crstitle, crsdept, crshrs, crsnum).
Niall
-Original Message-
From: cahana [mailto:[EMAIL PROTECTED]]
Sent: 07 July 2001 21:40
To: [EMAIL PROTECTED]
Subject: indexed properties
Hi everyone-
I need some help on using the indexed properties for html:text option.
I've implemented Dave Hay's modification and can get the input boxes to show
up using the iterate tag.
logic:iterate id=course name=CourseList property=courseList
tr
td%= courseNumber++ %/td
tdhtml:text name=course property=crstitle size=25
maxlength=50 indexed=true//td
tdhtml:text name=course property=crsdept size=6 maxlength=9
indexed=true//td
tdhtml:text name=course property=crsnum size=5 maxlength=6
indexed=true//td
tdhtml:text name=course property=crshrs size=5 maxlength=1
indexed=true//td
/tr
/logic:iterate
This is what my CourseList bean looks like:
public final class CourseList extends ActionForm
{
private ArrayList courseList = new ArrayList(6);
public ArrayList getCourseList() {
return(this.courseList);
}
public void setCourseList(ArrayList courseList) {
this.courseList = courseList;
}
public CourseForm getCourseForm(int index) {
return (CourseForm)courseList.get(index);
}
public void setCourseForm(int index, CourseForm course) {
this.courseList.add(index, course);
}
}
The problem i have is that when i try to submit the information and try to
access CourseList.getCourseList(), it bombs and says CourseList cannot be
found. The scope is request. I tried putting it in the session and can
access it that way but it doesn't have the changes that were made on the
form. Anybody know what i'm doing wrong?
thanks,
cameron
RE: html:link problem
No it just does a single parameter, for multiple params you need to use name or name and property which points to a HashMap of parameters. Niall -Original Message- From: Rama Krishna [mailto:[EMAIL PROTECTED]] Sent: 06 July 2001 01:40 To: [EMAIL PROTECTED] Subject: Re: html:link problem Niall , does it work for multiple param's??? or if not how do i tackle multiple params?? thanks, rama. - Original Message - From: Niall Pemberton [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, July 05, 2001 4:39 PM Subject: RE: html:link problem Rama, Cant you use paramProperty? html:link page=/target.cm paramId=value paramName=myCollectionElement paramProperty=idclick here/html:link Niall -Original Message- From: Rama Krishna [mailto:[EMAIL PROTECTED]] Sent: 05 July 2001 20:10 To: [EMAIL PROTECTED] Subject: html:link problem is this correct html:link page=/target.cm paramId=value paramName=bean:write name='myCollectionElement' property='id'/click here/html:link where myCollectionElement is a collection id is a property in the collection and i want http:///target.cm?value=2 (value of id) i get null when i say req.getParameter(value); in my action class?? any help??? thanks, rama
RE: iterate: offset
Rama I tried what you wrote below and the jsp ,didnt compile. This did though, and worked :-) % int row=0; % logic:iterate ... logic:iterate ... length=1 offset='%= +row %' % row++; % /logic:iterate /logic:iterate Also an alternative would be to use the indexId of the IterateTag which means you dont have to declare and increment your row variable. logic:iterate indexId=row ... logic:iterate ... length=1 offset='%= row.toString() %' /logic:iterate /logic:iterate Just out of interest - this looks like a solution to iterating through multiple collections in parallel - is that what your using it for? Niall -Original Message- From: Rama Krishna [mailto:[EMAIL PROTECTED]] Sent: 06 July 2001 18:46 To: [EMAIL PROTECTED] Subject: iterate: offset hi all, i am trying to iterate with length and offset when length=1 all the time and offset gets incremented with each outer iteration. i am trying to do something like this % int row=0; % logic:iterate ... logic:iterate ... length=1 offset='%= \+row+\ %' % row++; % /logic:iterate /logic:iterate as offset takes an string i am enlosing the int in quotes. no errors, but the value remains the same. did any one try this. any help is greatly appreciated. thanks, rama.
RE: html:text attribute question
Jerzy, Looking at the code of BaseHandlerTag (from which most of the html:... tags inherit) everything looks in place to handle this attribute (it was added on June 13th). I suggest you change your copy of the struts-html.tld to include this attribute and see if it works. Niall -Original Message- From: Jerzy Kalat [mailto:[EMAIL PROTECTED]] Sent: 09 July 2001 12:33 To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: html:text attribute question Hi, If this is true, what do I do wrong, as this line of code TD SPAN class=f-data html:text property=geoEntityType.id size=4 maxlength=4 title=Enter Type ID/ /SPAN /TD produces this error: org.apache.jasper.compiler.CompileException: C:\tomcat-3.2.1\webapps\myapps\geoEntityType.jsp(186,27) Attribute title invalid according to the specified TLD Jerzy Kalat - Original Message - From: Pham Thanh Quan [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, July 05, 2001 9:44 PM Subject: Re: html:text attribute question You can implement it perfectly by the way that you present Quan PS. I use IE 5.0 - Original Message - From: Jerzy Kalat [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, July 05, 2001 9:25 PM Subject: html:text attribute question Hi, IE Browser has very nice, user friendly feature, with form input text field. If such field has attribute title='text to be displayed' and user put his mouse over this field, this text is displayed to the user. I do not see 'title' atribute in html:text input button. Any idea how can we implement it? Jerzy Kalat
RE: Using tokens for sensitive form submissions
Action has a number of methods for transaction tokens [saveToken(), isTokenValid(), resetToken()] and the example shows use of them (look at EditRegistration.java and SaveRegistration.java). You can also specify a transaction=true attribute on the LinkTag so that the transaction token is retrieved from the session and stored in the request. Other than that, you need to do it yourself. Niall -Original Message- From: Bud Gibson [mailto:[EMAIL PROTECTED]] Sent: 09 July 2001 14:36 To: [EMAIL PROTECTED] Subject: Using tokens for sensitive form submissions Hi: We want to use tokens for sensitive form submissions. It looks like struts can do this. However, the feature is hidden (at least to me) and undocumented. Following David Geary's Advanced JSP book (and somewhat Core J2EE Patterns by Alur et al.), I would like to set a token when I send out certain forms and test the token when those forms are resubmitted. At this stage, I have actually written my own action and borrowed Geary's tag library code. If someone submits a form with a stale or no token, my action reroutes them to a default action that figures out what to do with them. If someone submits a form without a stale token, then the form is forwarded to another action that does validation and processing. Have I reinvented the wheel? Is there a built-in capacity to do this within struts? I want to write as little infrastructure code as possible. Thanks, Bud Gibson University of Michigan Business School
RE: iterate problem
Have you defined the struts-logic.tld at the top of your jsp?
-Original Message-
From: Moons Manuel [mailto:[EMAIL PROTECTED]]
Sent: 09 July 2001 13:43
To: '[EMAIL PROTECTED]'
Subject: iterate problem
Hello everyone.
I am currently having some problems with iterating over an array
of objects.
In my action class I have put an array into the session object
(request.getSession().setAttribute(orderedsandwiches,...);)
I would like to loop over these objects in my jsp page.
I am trying to do this like this:
bean:define id=orderedsandwiches name=orderedsandwiches/
table
logic:iterate id=element name=orderedsandwiches
tr
td
bean:write name=element property=name/
/td
/tr
/logic:iterate
/table
But when I try to do this, I get an exception like the following:
9-jul-01 14:21:07 GMT+02:00 Error HTTP
[WebAppServletContext(5325170,sandwich)] Root cause of ServletException
javax.servlet.jsp.JspException: Cannot find bean element in scope null
at
org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:493)
at
org.apache.struts.taglib.bean.WriteTag.doStartTag(WriteTag.java:179)
at jsp_servlet._viewall._jspService(_viewall.java:183)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStu
bImpl.java
:213)
at
weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDis
patcherImp
l.java:157)
at
org.apache.struts.action.ActionServlet.processActionForward(Action
Servlet.ja
va:1683)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1520)
at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:485)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStu
bImpl.java
:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAp
pServletCo
ntext.java:12
65)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletReques
tImpl.java
:1622)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
When I loop through the array using jsp snippets, I can print out the
contents of the array like this:
table
%
OrderBean []ob = (OrderBean[])orderedsandwiches;
for(int i=0;iob.length;i++) {
%trtd%
out.println(ob[i]);
%tdtr%
}
%
/table
The strange thing about all of this is that in another jsp page,
I do almost
the same thing and there this works without any problems.
Does anyone have an idea to solve this problem
RE: Help with if then else tags
You need to compile the tags and drop the class files into the appropriate directory, install the tld file (or modify the strust-logic.tld). Examples of using them are: http://husted.com/about/struts/logic-niallp.htm Niall -Original Message- From: Dudley Butt@i-Commerce [mailto:[EMAIL PROTECTED]] Sent: 12 July 2001 13:11 To: [EMAIL PROTECTED] Subject: Help with if then else tags Hi all, I just downloaded and tried to get the new extened Logic Taglib to work, does anyone know of how to use them, and more importantly HOW TO GET THEM TO WORK! ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **
RE: Long Story short
What scope is your ActionForm in - request or session? If its in session scope - no problem, if its request you need to make sure your array is set up with all the beans it requires (empty ones will do). Niall -Original Message- From: Frank Ling [mailto:[EMAIL PROTECTED]] Sent: 12 July 2001 00:04 To: [EMAIL PROTECTED] Subject: Re: Long Story short Hi, Dave: Thanks for the reply, I did have form-bean define at my struts-config.xml, in the matter fact, I did get all other form-bean field setting back form HTML form except this attributes array. The reason I used the changed indexed tag of html:text for iterate tag, is recently all the thread on this mailing list regarding for Iterate property updating all recommend using your changed tag to have text name set like array items (I.e. attributes[n].value), then sounds like will help to set this value back to original array on my form bean. I just don't get it how this will be happen. I do have all my html:text name set like that way (i.e. attributes[n].value), but still get nothing setting back to my array, I do have all the setter method for element of the array. Do you know how your indexed tag will help on this matters? Thanks again. Frank Ling - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, July 11, 2001 2:22 PM Subject: Re: Long Story short Frank, Do you have your struts-config set up correctly? You might check that a new form is not being created... Dave PS Do you need the indexed naming? If you don't, you don't need to use the changed tags... Frank Ling [EMAIL PROTECTED] on 07/11/2001 01:19:29 PM Please respond to [EMAIL PROTECTED] To: [EMAIL PROTECTED] cc:(bcc: David Hay/Lex/Lexmark) Subject: Long Story short Hi, There: I send a long version story regarding for the Iteration tag with indexed tag for property update. Not too much people response. Here is the short version for that story. I get Dave hay's indexed tag work good with the Iterate tag for showing the text field of my array attributes. I get attributes[n].value shows properly on my JSP page. but nothing setting back to attributes array of my form bean. the whole array is null after I received it on the next action class. Can anybody explain to me, why I get all these attributes[n].value shows as the name of HTML text name, then that will automatically populate back to my array? It's not working that way for me right now. what I did wrong. Any suggestion will be highly appreciated. Thanks Best Regards Frank Ling
RE: html:select/options
Either set a value=xyz or a name/property pointing to a bean with the initial value on the html:select tag. Niall -Original Message- From: DHarty [mailto:[EMAIL PROTECTED]] Sent: 12 July 2001 15:35 To: Struts User Subject: html:select/options Is there a way to dictate which option in a collection is set as selected when the page is rendered? ex html:options collection=Roles property=name / For example, I have a collection of projects that are rendered by the html:options tag. I also have some java script which updates a project description box when the selection is changed. The problem is when the page is first rendered, the two don't always match up. I initialize the description box to the first item in the collection, but the select doesn't always choose the first item. Thanks D
RE: Indexed tags - Dave Hays code
I believe Dave Hays tags were included in the nightly builds in the last week or so. So if you download that you should be OK. Niall -Original Message- From: Nathan Coast [mailto:[EMAIL PROTECTED]] Sent: 30 July 2001 15:38 To: Struts-User (E-mail) Subject: Indexed tags - Dave Hays code Hi, I'm trying to use the Indexed tags from Dave Hays: http://husted.com/about/struts/indexed-tags.htm anyone got a replacement struts.jar with the relevant code changes in? It's not that I'm lazy, I'm just having trouble getting the code built using ant 1.3 java.lang.NoClassDefFoundError: javax/xml/transform/Source at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at org.apache.tools.ant.taskdefs.XSLTProcess.setProcessor(XSLTProcess.ja va:229) at org.apache.tools.ant.taskdefs.XSLTProcess.execute(XSLTProcess.java:13 7) at org.apache.tools.ant.Target.execute(Target.java:153) at org.apache.tools.ant.Project.runTarget(Project.java:898) at org.apache.tools.ant.Project.executeTarget(Project.java:536) at org.apache.tools.ant.Project.executeTargets(Project.java:510) at org.apache.tools.ant.Main.runBuild(Main.java:421) at org.apache.tools.ant.Main.main(Main.java:149) ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **
RE: some comparision between JSP/struts and velocity
The third wayif the Struts tags dont do what you want then write your own. Then you dont have to use scriptlets, you have a re-useable bit of functionality, the web designers are happy and you dont have to use Velocity. Niall -Original Message- From: Tim Colson [mailto:[EMAIL PROTECTED]] Sent: 31 July 2001 00:55 To: [EMAIL PROTECTED] Subject: RE: some comparision between JSP/struts and velocity Scriptlets OK for view only? Another developer in my group and I discussed this at length last week. I believe scriptlets in the view to be bad practice...or at least a slippery slope towards badness. grin I suggest that there are two levels of separation we are trying to achieve. 1) Separation of Business Logic from Display logic 2) Separation of Developer tasks from Designer tasks I'd bet we all mostly agree and accept the first type as good MVC practice, and Struts does this quite well. The second type, though, would be violated by putting scriptlets into the View, something JSP does not prevent. While not violating MVC - the resulting View needs a Designer who knows Java. The counter-argument usually goes like so, Well, there's JavaScript on the page, and the Designer understands that... and the JSP Scriptlet is Java which kinda looks like JavaScript...ergo, the Designer should be okay with that too. Slippery Slope. The Designer probably copied the JS from a Script archive, or used a WYSIWIG tool like DreamWeaver to build the script... ;-) BTW - the scriptlet was written because the existing taglibs either couldn't do what we needed, or at least it was taking too much time to figure out if they could. If we had Velocity as an option, I could have written the necessary bits without the complication of Java in short order. I'm not sure the Designer would understand it, but I'm betting I'd have an easier time explaining the minimal Velocity directives versus the Java grin Cheers, Tim Colson
RE: some comparision between JSP/struts and velocity
Timothy, Sorry, I couldnt disagree with you more. Custom tags are exactly the place to put html - they are part of the view, if you look at struts html tags thats what they do. There isnt currently javascript in any struts tags (just attributes for most javascript events) and there are probably browser issues that could complicate this, but its on the Struts to do list to handle client side validation which almost certainly means javascript and tags. Niall -Original Message- From: Tim Colson [mailto:[EMAIL PROTECTED]] Sent: 31 July 2001 02:20 To: [EMAIL PROTECTED] Subject: RE: some comparision between JSP/struts and velocity Niall Pemberton suggested ...if the Struts tags dont do what you want then write your own. Then you dont have to use scriptlets, you have a re-useable bit of functionality, the web designers are happy and you dont have to use Velocity. While a custom tag is an option; this bit of functionality would have required embedding javascript code and html inside the custom tag lib. To me, putting view specific code like inside a tag library is also a slippery slope in the quest to keep thing separated. Cheers, Timothy
RE: Dealing with many JSP files with one Action
I'm sure you can do something more intelligent than duplicating the whole
set of jsps for each different language. If the problem is that you need
different images for different languages then write your own tag to generate
the path for the image based on the localle.
IMHO I wouldn't resolve your issue this way, BUT...
you could sub-class Action and do something like the following:
public class LocalAction extends Action {
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws
IOException, ServletException {
ActionForward forward = super.perform(mapping, form, request,
response);
String prefix = getLocale(request).getISO3Language();
if (prefix == null || prefix.length() ==0)
return forward;
else
return new ActionForward(prefix + '/' + forward.getPath());
}
}
Niall
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 11 June 2002 12:54
To: [EMAIL PROTECTED]
Subject: RE: Dealing with many JSP files with one Action
-- Envoyée par Olivier Schmeltzer/QVI/GRAF/FR le
11/06/2002 13:43 ---
Olivier Schmeltzer
11/06/2002 09:01
Pour : [EMAIL PROTECTED]
cc : [EMAIL PROTECTED] (ccc : Olivier
Schmeltzer/QVI/GRAF/FR)
Objet : RE: Dealing with many JSP files with one Action
Thanks for your answer. Unfortunately, I am not able to modify the
directory structure and all the way this is going to work. We
don't want to
just have the text in multiple languages : images also have to be
different
; everything can be modified by marketing people (from different
countries)
who don't develop the Internet site, through a Content Management System
tool.
The example I chose was meant to be simple, but it is actually much more
complicated than this.
So, I repeat my question : is there a way for a single Action to serve
multiple JSP files, by taking advantage of a relative path ?
If the current JSP page I am viewing now is /FR/home/home.jsp, can I put
inside this page an action (let's say a ForwardAction) that will show me
the /FR/logon/logon.jsp ? And I want to use the same flow
description to go
frome the /EN/home/home.jsp file to the /EN/logon/logon.jsp ?
The following does not work but it gives the idea :
action path=/homeLogonRel
type=org.apache.struts.actions.ForwardAction
parameter=../logon/logon.jsp
/action
Thank you for your time.
Olivier Schmeltzer
---
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RE: Two questions
I didn't understand the first question. You can forward in a jsp using the struts forward tag: logic:forward name=sessionexpired/ Niall -Original Message- From: Yaman Kumar [mailto:[EMAIL PROTECTED]] Sent: 12 March 2002 23:04 To: Struts Users Mailing List; [EMAIL PROTECTED] Subject: Two questions Hi, I have 2 questions 1.Regarding calling a method that is in ActionForm from a jsp. Ex: I have an image and i would like to enable reset method to image that is in MyActionForm class. 2. I have a forward that is in global-forwards and i would like to get that in a jsp page, Ex. global-forwards forward name=sessionexpired path=/InvalidSession.jsp/ /global-forwards Can I call sessionexpired forward name in a jsp file rather than writing InvalidSession.jsp?, So that if i change path of this forward in future that should affect in whole web application. TIA rayaku -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Struts Design/construction process. question
I saw this thread and thought...great, flame war..., but you guys are too nice. IMHO I suggest you learn from the guru before trying this next time: http://www.IamMarkGalbreath.org/FlameWar/HowTo/AnnoyTheHellOutOfEveryone Niall P.S. 'old (35?) mainframe programmers' on this list must have seen the light...Hallelujah! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] I'd like to apologize for that comment... I did not mean it as a bad thing... I guess I just liken the old mainframes with the old programming methodologies that involved tons of upfront planning and an pretty unflexible design once programming started. Back when the project delivery times were in years, not weeks... :) -Original Message- From: Jerry.Jalenak [mailto:[EMAIL PROTECTED]] As an 'old mainframe programmer' I resent this. (:-) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] I tend to agree on this. I have only done a few things in struts, but have been programming for quite a while. The idea of pumping everything out in seperate development projects just out right scares me. If this was to have any chance of working out you would need: (1) A horrendous amount of upfront planning (2) Program requirements that don't change at all (3) A programming team that would not quit during an upfront design this heavy All in all, if its a large project you could probably dub it a death march project. #1 is too terrible to consider, #2 is just plain silly, #3... well... Personally, iterative development has worked in most of the projects I have been on and run. Thats all from here... PS. Are the project managers old mainframe programmers or something? -Original Message- From: josephb [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 12, 2002 7:54 PM To: struts-user Subject: RE: Struts Design/construction process. question This reminds me of the adage a former professor of mine used to preach: It is much easier to build a program than to give birth to one. The pump out a list of components and while bringing the page to life parts of your message make it sound an awful lot like your project management is involved in obstetrics in addition to software development. :) Seriously, though, you *will* run into problems doing things this way. For instance, having a junior developer create 60 form beans for the expected inputs on each page has several implications: 1. Your action developers will have to modify the beans anyway most likely because the form bean developer cannot know things like whether an array or a List is more appropriate for collection data in a particular instance (this usually depends on the Action). 2. A naming convention for the beans must be established or madness will ensue. 3. It may make sense to re-use a form bean for different jsps, or nest form beans depending on the implementation of the action classes. The form bean developer will not know the nature of this implementation ahead of time and thus cannot make these decisions. b.t.w., there are tools (or you can build your own) for generating basic ActionForm beans, so this is not really an issue anyway. I have always assumed that the action classes would be completed at the same time that the page is converted to jsp/struts. Add ActionForm classes to the above statement and you are entirely correct. We tend to view an Action, its ActionForm, and the presentation logic (i.e., Struts tags) in their associated JSP(s) as an action module of sorts, and a single developer is resonsible for these components. Things become very messy when you try to split the JSP, ActionForm, and Action work to different developers, IMHO. My $.02 ( more like $1.02?) peace, Joe Barefoot -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 12, 2002 4:16 PM To: [EMAIL PROTECTED] Subject: Struts Design/construction process. question This is our *FIRST* Struts project and we are putting together a construction plan. I would like to find out how other projects divide the work between developers. Our project management would like to see a developer pump out a list(s) of disconnected components and have one person connect them together. Our page layout is well in place, and I can create a list of form beans. *note - we are not using dynabeans. So... our HMTL guy can go ahead a create the 60 pages in one shot. A junior developer can create 60 form beans If you are not using something like Junit, is it practical to design and create many action classes ahead of time? I have always assumed that the action classes would be completed at the same time that the page is converted to jsp/struts. I would have already created a generic template (that would compile and run ), so it seems
RE: Struts Design/construction process. question
Yeah Excellent, yahh booo...you suck too. I still think we don't quite live up to the MG standard though - yoiu let yourself down on the 'take back', but thanks, hehe ;-) Niall -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 13 June 2002 18:35 To: [EMAIL PROTECTED] Subject: RE: Struts Design/construction process. question We may be heading off topic here... I started out at the tail end of that era... I swore an oath that I would never work on a mainframe and managed to avoid COBOL, RPG, JCL, Mainfram Assembler, Fortran except in school... Now back our regularly scheduled topics MAINFRAMES SUCK! (Happy Niall?) (incidentally the above was in jest - I hear you can run Linux on them now...) -Original Message- From: Jerry.Jalenak [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 13, 2002 1:00 PM To: struts-user Subject: RE: Struts Design/construction process. question Hard to believe there was a time when Cobol ruled the universe and programs were designed in a 'top-down' fashion isn't it? And as an old (actually 40+) mainframe programmer who is trying to make the transition from the non-object world of Cobol and (gasp here) assembler to the object-oriented world of Java (and JSP and struts and XML and and and), there are times when I really miss those 'good old days'. But then I think, nah, just post a question on the mailing list and get the 'right' answer from all of you guys! Jerry -Original Message- From: Niall Pemberton [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 13, 2002 11:51 AM To: Struts Users Mailing List Subject: RE: Struts Design/construction process. question I saw this thread and thought...great, flame war..., but you guys are too nice. IMHO I suggest you learn from the guru before trying this next time: http://www.IamMarkGalbreath.org/FlameWar/HowTo/AnnoyTheHellOutOfEveryone Niall P.S. 'old (35?) mainframe programmers' on this list must have seen the light...Hallelujah! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] I'd like to apologize for that comment... I did not mean it as a bad thing... I guess I just liken the old mainframes with the old programming methodologies that involved tons of upfront planning and an pretty unflexible design once programming started. Back when the project delivery times were in years, not weeks... :) -Original Message- From: Jerry.Jalenak [mailto:[EMAIL PROTECTED]] As an 'old mainframe programmer' I resent this. (:-) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] I tend to agree on this. I have only done a few things in struts, but have been programming for quite a while. The idea of pumping everything out in seperate development projects just out right scares me. If this was to have any chance of working out you would need: (1) A horrendous amount of upfront planning (2) Program requirements that don't change at all (3) A programming team that would not quit during an upfront design this heavy All in all, if its a large project you could probably dub it a death march project. #1 is too terrible to consider, #2 is just plain silly, #3... well... Personally, iterative development has worked in most of the projects I have been on and run. Thats all from here... PS. Are the project managers old mainframe programmers or something? -Original Message- From: josephb [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 12, 2002 7:54 PM To: struts-user Subject: RE: Struts Design/construction process. question This reminds me of the adage a former professor of mine used to preach: It is much easier to build a program than to give birth to one. The pump out a list of components and while bringing the page to life parts of your message make it sound an awful lot like your project management is involved in obstetrics in addition to software development. :) Seriously, though, you *will* run into problems doing things this way. For instance, having a junior developer create 60 form beans for the expected inputs on each page has several implications: 1. Your action developers will have to modify the beans anyway most likely because the form bean developer cannot know things like whether an array or a List is more appropriate for collection data in a particular instance (this usually depends on the Action). 2. A naming convention for the beans must be established or madness will ensue. 3. It may make sense to re-use a form bean for different jsps, or nest form beans depending on the implementation of the action classes. The form bean developer will not know the nature of this implementation ahead of time and thus cannot make these decisions. b.t.w., there are tools (or you
RE: tag for the blank string to nbsp; ... performance
Alternatively, you could sub-class the struts PresentTag and override the
doStartTag() method to output the nbsp; if the condition is not true (I
haven't tested it, but see below example).
Then use in the same way as the struts PresentTag ... how clear is that?
logic:presentNbsp name=theForm property=theProp
bean:write name=theForm property=theProp/
/logic:presentNbsp
===
import javax.servlet.jsp.JspException;
import org.apache.struts.util.ResponseUtils;
public class PresentTagNbsp extends
org.apache.struts.taglib.logic.PresentTag {
/**
* Perform the test required for this particular tag, and either
evaluate
* or output a nbsp;
*
* @exception JspException if a JSP exception occurs
*/
public int doStartTag() throws JspException {
// Present, output body
if (condition())
return (EVAL_BODY_INCLUDE);
// Not Present, output nbsp.
ResponseUtils.write(pageContext, nbsp;);
return (SKIP_BODY);
}
}
===
-Original Message-
From: emmanuel.boudrant [mailto:[EMAIL PROTECTED]]
Sent: 19 June 2002 23:00
To: Struts Users Mailing List; [EMAIL PROTECTED]
Subject: RE: tag for the blank string to nbsp; ... performance
jsp:useBean id=theForm class=xxx.TheFormClass scope=session/
td
% if ( theForm.getTheProp() != null ) { %
%= theForm.getTheProp() %
% } else { %nbsp;% } %
/td
is's more readable ;) ... but scope must be known.
-Emmanuel
Joseph Barefoot [EMAIL PROTECTED] a écrit :
Hi,
I've got a simple question, custom tags decrease performance,
isn't it ? When using a custom tag, a object is instancied,
doStartTag, doEndTag... invoked.
so why use a tag for making a simple test ?
4 reasons:
1. You are testing for the existence of a property of an
Attribute, not the
existence of the attribute itself. See below for the difference.
2. You are enforcing MVC concepts by limiting logic expressions
in your JSP
3. By using the tag with no scope specified, the object with name
theForm
could be in any scope. Doing it the scriplet way would require
you to write
code for a specific scope (request, sesssion, etc.).
4. The tag is a a helluva lot easier to read than the corresponding
scriplet (see below).
became
The above would not have the desired effect. You would have to cast and
invoke the getter. It would have to be:
null ) { %
Note that this assumes the form bean is in the request. You would have to
write more code if it could be either session or request scope. Note also
that you are still invoking a custom tag to ouput the value, so if you're
trying to eliminate tag overhead it should be:
null ) { %
Isn't that fun to read? :):)
-Emmanuel
James Mitchell a écrit :
DOH!!.hehehe.sorry, that's what I meant. (going thru my mail too
quickly)
James Mitchell
Software Engineer\Struts Evangelist
Struts-Atlanta, the Open Minded Developer Network
http://struts-atlanta.open-tools.org
-Original Message-
From: Joseph Barefoot [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 20, 2002 4:02 PM
To: Struts Users Mailing List; [EMAIL PROTECTED]
Subject: RE: tag for the blank string to
That's what we do, except the should be outside the logic tag, or
it won't get ouputted when the property isn't present:
-Original Message-
From: James Mitchell [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 19, 2002 1:03 PM
To: Struts Users Mailing List
Subject: RE: tag for the blank string to
You might be frustrated by the way tables are displayed when a
is empty
(especially if you are using stylesheets to format your tables)
Instead of rewriting a bunch tablib to support this, or
calling helper
functions, I've overcome this by always adding a in
every like
this
Hope this helps!
James Mitchell
Software Engineer\Struts Evangelist
Struts-Atlanta, the Open Minded Developer Network
http://struts-atlanta.open-tools.org
-Original Message-
From: Cheng, Sophia [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 19, 2002 2:20 PM
To: '[EMAIL PROTECTED]'
Subject: tag for the blank string to
Hi,
Is there any tag which will write the blank string(null
String or
String with length 0) to for a form property?
Currently I am using logic:notPresent(see below), but I
need to do it
for many properties. Is there some other way to handle it?
Thanks in advance.
Sophia
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RE: Newbie Struts requirements question
You don't have to have a web server to run struts - you do need a servlet container such as Tomcat. I don't know anything about Windows ME, but I used to run Tomcat of Windows 98 at home, before I upgraded to Win2000. Niall -Original Message- From: Ballard [mailto:[EMAIL PROTECTED]] Sent: 18 July 2002 19:57 To: [EMAIL PROTECTED] Subject: Newbie Struts requirements question I've got a question. I want to run this Struts sample app at home but I'm running Windows ME. I've downloaded the Apache web server but it isn't really supported on ME. I don't want to make this exercise any harder than it needs to be, so I'm thinking of upgrading my OS to Windows XP Professional. What I can't figure out from the Microsoft site is: Can I run services on Windows XP Professional? Or can I run them on the regular XP? Would I be better of upgrading to Windows 2000 Professional? I know I can run services on that. I know the missus wouldn't be pleased if I switched our PC to Linux so it's either 2000 Pro or some kind of XP. (I think). You don't happen to have any insight here, do you? -- To unsubscribe, e-mail: mailto:struts-user- [EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: AND/OR with logic tags
I have a set of tags based on If that includes AND/OR, which can be downloaded from Ted husted's site (reference is shown under Contributor Taglib on the strust site): http://jakarta.apache.org/struts/userGuide/resources.html http://husted.com/about/struts/logic-niallp.htm However this was recently discussed on the Dev list and 9 out of 10 committers (well 3 actually - Craig McClanahan, Martin Cooper, Ted Husted) preferred the JSPTL route than this. I include links to that thread below: http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg02946.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg02947.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg02959.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg02960.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg02962.html Niall -Original Message- From: Eric Rizzo [mailto:[EMAIL PROTECTED]] Sent: 01 October 2001 17:06 To: [EMAIL PROTECTED] Subject: AND/OR with logic tags Sorry if this has already been asked/answered here - the mail archive doesn't let me search for AND OR. Is there a way to have multiple conditional logic with the Struts logic taglib? For example, IF (user is present) OR (visitor equals true). TIA, Eric -- Eric Rizzo, Software Engineer OpenNetwork Technologies http://www.opennetwork.com - I embrace my personality flaws, for without them I might have no personality at all.
RE: Cannot find message resources under key org.apache.struts.action.MESSAGE
Have you defined an initialization parameter for the resource bundle? From the User Guide: --- When you configue the controller servlet in the web application deployment descriptor, one of the things you will need to define in an initialization parameter is the base name of the resource bundle for the application. In the case described above, it would be com.mycompany.mypackage.MyResources. servlet servlet-nameaction/servlet-name servlet-classorg.apache.struts.action.ActionServlet/servlet-class init-param param-nameapplication/param-name param-valuecom.mycompany.mypackage.MyResources/param-value /init-param .../ /servlet The important thing is for the resource bundle to be found on the class path for your application. From: G.L. Grobe [mailto:[EMAIL PROTECTED]] Subject: Cannot find message resources under key org.apache.struts.action.MESSAGE Just started learning struts. I'm using orion server 1.4.5. I've got the struts.jar in my ~/WEB-INF/lib dir and have listed the taglibs in the ~/WEB-INF/web.xml file as well as included all the *.tld in this same dir. taglib taglib-uri/WEB-INF/struts-bean.tld/taglib-uri taglib-location/WEB-INF/struts-bean.tld/taglib-location /taglib taglib taglib-uri/WEB-INF/struts-html.tld/taglib-uri taglib-location/WEB-INF/struts-html.tld/taglib-location /taglib ... When running the following page, I get the error list down below: I've also got a file called 'myProps.properties' packaged under the ~/WEB-INF/classes/com.mydir1/mydir2/resources dir. index.jsp --- %@ page language="java" % %@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" % %@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" % html:html head title bean:message key="main.title" / /title /head body html:errors / This is a atest. /body /html:html --- error output - 500 Internal Server Error javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.MESSAGE at org.apache.struts.util.RequestUtils.message(RequestUtils.java, Compiled Code) at org.apache.struts.taglib.bean.MessageTag.doStartTag(MessageTag.java, Compiled Code) at /index.jsp._jspService(/index.jsp.java, Compiled Code) at com.orionserver.http.OrionHttpJspPage.service(JAX, Compiled Code) at com.evermind.server.http.HttpApplication.xj(JAX, Compiled Code) at com.evermind.server.http.JSPServlet.service(JAX, Compiled Code) at com.evermind.server.http.d3.sw(JAX, Compiled Code) at com.evermind.server.http.d3.su(JAX, Compiled Code) at com.evermind.server.http.ef.s1(JAX, Compiled Code) at com.evermind.server.http.ef.do(JAX, Compiled Code) at com.evermind.util.f.run(JAX, Compiled Code) Any help much appreciated.
You make the decision Velocity/Turbine vs. Struts/JSP
Jon,
http://jakarta.apache.org/velocity/ymtd/ymtd.html
I read your comparison of Turbine/Velocity and Struts/JSP and although you
state it your aim to be "fair and unbiased", I think you failed since most
of your examples, although sytanctically correct, were poor examples of the
use of Struts and Jsp. I only started getting into Jsp Struts a couple of
weeks ago but below are my comments on your article. I also copy this to the
struts mailing list as I am sure more experienced people may be able to
comment better.
In your first example "Saying Hello" there is not need whatsoever in Jsp to
have any "out.println" statements. The example you gave could have been
coded in the following way:
html
headtitleHello/title/head
body
h1
% if (request.getParameter("name") == null) %
Hello World
% else %
Hello, % request.getParameter("name") %
/h1
/body/html
On the subject of "Generation", I don't believe this is a big issue, since
1) its automatically handled by the servlet container and therefore not a
big issue to developers and 2) the performance issue is only relevant when
you change the application, its not like it happens every time you run the
jsp.
On the subject of "Error Handling", you are comparing Velocity only with
Jsp - the idea of Struts is that, it takes the need for Scriptlets out of
Jsp by providing custom tags (java classes) to deal with those situations.
What you quote here from Jason's books is only relevant to Scriptlets, not
well written Struts applications. The issues stated there are exactly why a
framework such as Struts was developed and an argument for using Struts.
Again in the section of "JavaBeans" you are not comparing like-with-like.
Velocity/Turbine will have the same issues of "Scope" that any Web
Application has and from what I see of your Velocity/Turbine example, you
have just hidden this from the Web Designer. The same can be done in a
Struts application with Struts tags rather than the "jsp:useBean" tag.
Again your quote from Jason's book relates solely to Jsp and is not a fair
comparison to Struts.
I'll ignore the sample app section, again its Jsp not Struts.
The "Taglibs" section is the first serious section which deals with Struts
and you start with cheap points about "cutting edge of a broken wheel" - so
tell me how is Velocity cutting edge then? - yet another scripting language
to handle presentation that a Web Designer needs to get to grips with. The
idea with Jsp/Struts is that it extends HTML in the same "style" to what Web
Designers are used to.
I would be the first to say the Struts documentation could be better but the
two examples that you listed from the Struts documentation were small
examples used to illustrate specific Struts features and not the best way to
develop Struts applications on the Model 2 architecture. The first example
using the logic:equal tag is poor because it encapsulates the "business
logic" (I know its simple) of the app in the presentation and therefore
shouldn't have been in the Jsp. Complex logic shouldn't be in the
presentation layer and so their use should be limited. The "if. . . .else"
logic of Velocity looks good to me, as a programmer, but I think a Web
Designer would be more at home with the Tag Style they are used to.
In your second example from the Struts document which uses a Scriptlet to
define an ArrayList - this has clearly been done to make the example simple
(a point I seem to remember being made in the document, though I couldn't
find the example again) - it is a break from the MVC architecture but its
not how Struts should be used, this collection would have been created in
the "logic" java end and put into scope ready for a Web Designer to use
through Struts tags - as simple or simpler than the Velocity example.
And finally - the example from "Jason Hunters" book which you say has been
entirely implemented as a Struts app - this is awful and is a complete abuse
of everything that Struts is about - why not get a decent Struts developer
(not me!) of giving you a good example - also where is the Velocity
equivalent for fair comparison - nowhere to be seen!
I was hoping for an article which would help me make an informed decision
but your portrayal of Struts didn't show it in the way it should be used or
explain what else it could do, such as Internationalization. I understand
(but not like) commercial software vendors going to any means to disparage a
competitors product but I am shocked that one Open Source project has done
it to another when they both come under the same Apache umbrella.
Niall
winmail.dat
RE: You make the decision Velocity/Turbine vs. Struts/JSP
Your're right, my mistake, but I'm wasn't criticising your aim, just the acutal guts of the comparison, the aim's a good one :-) Niall -Original Message- From: Jon Stevens [mailto:[EMAIL PROTECTED]] Sent: 04 March 2001 21:47 To: Niall Pemberton Cc: [EMAIL PROTECTED] Subject: Re: You make the decision Velocity/Turbine vs. Struts/JSP I'm going through the document and making some changes based on yours (and others) suggestions and I have a question: on 3/4/01 11:55 AM, "Niall Pemberton" [EMAIL PROTECTED] wrote: I read your comparison of Turbine/Velocity and Struts/JSP and although you state it your aim to be "fair and unbiased" Where exactly do I state that? I see: "Therefore, a lot of effort has gone into this essay to state things as fairly and accurately as possible." Which is true and I don't think that should change. But, I don't see where I said "unbiased". :-) -jon -- If you come from a Perl or PHP background, JSP is a way to take your pain to new levels. --Anonymous http://jakarta.apache.org/velocity/ymtd/ymtd.html
RE: Minimizing Action class proliferation
Donnie,
How about this as an alternative. I have created a subclass of Action called
StandardAction which uses reflection to invoke a method with the same name
as the "actions" path (defined in the struts-config.xml file). So all you
have to do is extend the Standard action and implement methods that
correspond to the paths that use it.
For example if you define three actions in your struts-config.xml file of
/saveOrder, /editOrder and /deleteOrder that all use a class OrderAction
which extends StandardAction and then create a OrderAction class as shown
below:
I hope this is of use.
Niall
--Example of StandardAction implementation---
public class OrderAction extends StandardAction{
public ActionForward saveOrder(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
}
public ActionForward editOrder(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
}
public ActionForward deleteOrder(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
}
}
---StandardAction Class---
package nkp;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* @author Niall Pemberton
* @version 1.0
*/
public abstract class StandardAction extends Action {
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
// Determine the method name to call (based on the path without the "/")
String methodName = mapping.getPath().substring(1);
// Get the method with the same name as the path
Class cls = this.getClass();
Method method = null;
try {
method = cls.getMethod(methodName, new Class[] {ActionMapping.class,
ActionForm.class,
HttpServletRequest.class,
HttpServletResponse.class});
}
catch (NoSuchMethodException ex) {
servlet.log("Method "+methodName+" not found in class
"+this.toString());
}
// Invoke the Method
Object obj = null;
try {
obj = method.invoke(this, new Object[] {mapping, form, request,
response});
}
catch (InvocationTargetException etargEx) {
servlet.log("Error Involing Method
"+methodName+"(InvocationTargetException) "+this.toString());
}
catch (IllegalAccessException illEx) {
servlet.log("Error Involing Method
"+methodName+"(IllegalAccessException) "+this.toString());
}
ActionForward actionForward = (ActionForward)obj;
// Forward control to the specified success URI
return actionForward;
}
}
winmail.dat
RE: Tomcat question
Johan, I'm using Tomcat Version 3.2.1 and the readme document had the following information on Tomcat versions. There isn't info about 3.2.2 3.3 there but probably if you download those versions there will be a readme explaining the changes. Besides the differences in functionality the other difference is the quality/stability of the versions - whether they are milestone, beta or release quality. Tomcat Versions 3.1.1 and 3.2.1 are the only "release" builds. Tomcat Versions 3.2.2 and 4.0 are beta versions. Tomcat Version 3.3 is a milestone build. From a Struts point of view the minimum requirement is Tomcat 3.1 but there are lots of messages from those in the know that version 3.1 is not recommended, you need 3.2 at least. e.g. http://www.mail-archive.com/struts-user@jakarta.apache.org/msg04662.html Hope this helps. Niall README 1. INTRODUCTION README Tomcat Version 3.2.1 is a security related update! See Section 7, below, README for details on the changes that have been made. All other existing issues with README Tomcat 3.2 will remain in 3.2.1 -- they will be addressed in subsequent README maintenance updates (3.2.2, and so on). README 4. TOMCAT: PAST, PRESENT, AND FUTURE README - Version 3.0 (released 12/1999) was the initial release of Tomcat. In README addition to implementing the Java Servlet and Server Pages specification, README this release featured a minimal Apache connector. README - Tomcat 3.1 (released 4/2000) improved the Apache connection and added README connector support for Netscape and IIS web servers. It also added WAR file README support, automatic servlet reloading, and a command line tool (jspc) to README compile ahead of time the JSP pages that comprise your application. Finally, README version 3.1 also focused on reorganizing the code (modularization, cleanup, README refactoring, removal of dead code, and separation of J2EE-specific code). README - Tomcat 3.2 is the first performance tune-up, and also adds a few new README features (see next section). README - Tomcat 4.0 is separate development from Tomcat 3.x. It is based on the README Catalina architecture, which is very different from the architecture of README Tomcat 3.x. In addition, Tomcat 4.0 is to be the reference implementation README for the Servlet 2.3 and JSP 1.2 specifications. README 7. SECURITY VULNERABILITIES FIXED IN TOMCAT 3.2.1 README 7.1 Protection of Resources in /WEB-INF and /META-INF Directories README The servlet specification prohibits servlet containers from serving resources README in the /WEB-INF and /META-INF directories of a web application archive directly README to clients. In Tomcat 3.2, this means that URLs like: READMEhttp://localhost:8080/examples/WEB-INF/web.xml README will return an error message, rather than the contents of your deployment README descriptor. However, there is a vulnerability in Tomcat 3.2 that exposes README this information if the client requests a URL like this instead: README http://localhost:8080/examples//WEB-INF/web.xml README (note the double slash before "WEB-INF"). This vulnerability has been README corrected in Tomcat 3.2.1. README 7.2 Show Source Vulnerability README The example application delivered with Tomcat 3.2 included a mechanism to README display the source code for the JSP page examples. This mechanism could README be used to bypass the restrictions on displaying sensitive information in README the WEB-INF and META-INF directories. This vulnerability has been removed. -Original Message- From: Johan Compagner [mailto:[EMAIL PROTECTED]] Sent: 22 March 2001 00:00 To: Struts Subject: Tomcat question Hi, One tomcat question for this list (i know there are some tomcat developers here) Why can't i find changes.html or something like that for the tomcat versions? You got now a 3.1.x branch (doesn't seem to be in development anymore) 3.2.x branch (still development 3.2.2 beta 1 as latest mile stonde) 3.3.x branch (the latest in 3.x) And you got 4.0 I know the differences between 3.x (servlet 2.2 / jsp 1.1) and 4.x (servlet 2.3 / jsp 1.2) But why all those 3.x branches and why are there even 2 in development? Johan
RE: form question
I have the same problem - form fields embedded in an iterate tag.
Would it be possible to change tags such as CheckboxTag and BaseFieldTag so
that they detect when they are embedded in the "iterate" tag and format the
name attribute appropriately.
I tried changing these two tags replacing the following line in the the
doStartTag() method:
results.append(property);
With the following code and it worked well, automatically populating my
collection objects:
results.append(decideName());
/**
* Determine the name attribute
*/
private String decideName() {
// Check if this Tag is embedded in an Iterator Tag
Tag tag = findAncestorWithClass(this, IterateTag.class);
// No iterator, use the property as the name
if (tag == null)
return this.property;
IterateTag iterator = (IterateTag)tag;
int index = iterator.getLengthCount()-1;
return iterator.getProperty()+"["+index+"]."+this.property;
}
Niall
P.S. thanks for Struts - great framework.
-Original Message-
From: Uwe Pleyer [mailto:[EMAIL PROTECTED]]
Sent: 25 March 2001 07:24
To: [EMAIL PROTECTED]
Subject: Re: form question
Hey,
I had some hard nights fighting with exactly this problem and got
a solution
wich is not very elegant but works...
html:form action="/formAction.do"
table border="1" width="100%"
// some headings for the table
% int i = 0; %
logic:iterate name="Bean" property="beanItems" id="anything"
tr
td
html:text name="Bean" property='%= "beanItems[" + i +
"].amount"
%'/
/td
td
$bean:write name="Bean" property='%= "beanItems[" + i +
"].total"
%' filter="true" /
/td
td
html:checkbox name="Bean" property='%= "beanItems[" + i +
"].checkbox" %'/
/td
td
/tr
% i++; %
/logic:iterate
/table
html:submit/
/html:form
As you see, you use the collektion of your formbean directly. The
Bean needs
properties, getter and setter Methods according to the Javabean-Spec whats
the reason to change BeanItems to beanItems!
private Collection beanItems;
public Item getBeanItems(int index)
public void setBeanItems(int index, Item item)
public Item[] getBeanItems()
public void setBeanItems(Item[] items)
It's also important to configure your formbean with scope="session" in
Struts-config and never to destroy your Collection in the
reset-Method! The
HTML for the input field will show like this: input type="text"
name="beanItems[0].amount" value="123"
After submit Struts uses the following setter Method:
Bean.getBeanItems(0).setAmount("123"); As struts use the getBeanItems(i)
Method to get yor Item-Objects, there is no chance to create them in the
request-scope. There must be held from the moment you establish your
beanItems-Collection for output till the submit of the user in
session-scope.
Hope that helps
Uwe
JOEL VOGT schrieb:
Hi all,
I have a html form on a jsp page. This form has a table generated by the
logic iterate tag.
In each table row, there are two fields, one a checkbox and the other a
text field.
What I want is when the user clicks 'submit' all the values are sent to
an action form for storing and then to my servlet for processing.
How do I make a form that will automatically be populated by all these
values? In other words I'm stuffed please help ;)
Thanks, Joel.
Sample jsp:
html:form action="/formAction.do"
table border="1" width="100%"
// some headings for the table
logic:iterate name="Bean" property="BeanItems" id="bean"
tr
td
html:text name="bean" property="amount"/
/td
td
$bean:write name="bean" property="total" filter="true" /
/td
td
html:checkbox name="bean" property="checkbox"/
/td
td
/tr
/logic:iterate
/table
html:submit/
/html:form
How do I get these values into a form then servlet then database?
RE: using titles from an application resource file in my templates
Have you included the bean TLD in your jsp? %@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" % -Original Message- From: Troy Hart [mailto:[EMAIL PROTECTED]] Sent: 27 March 2001 17:52 To: [EMAIL PROTECTED] Subject: Re: using titles from an application resource file in my templates This doesn't work. In the case you show below, the title ends up being: "b bean:message key="publish.title" / /b" Troy Luckly someone answered this last week: template:put name="title" direct="true" b bean:message key="publish.title" / /b /template:put Troy Hart wrote: I am using struts-template.tld and I want to be able to use my application resources to get the correct title for any given page. I thought I had seen this talked about somewhere but I can't find it anyplace in the mail archives. I'm sure people that use struts templates must be doing this, but I'm just not seeing how right now. It seems to me that I need a tag that works similar to: bean:message key="somePage.title"/ Except that it needs to expose a scripting variable with the value, instead of writing it to the output stream. Maybe the message tag could be extended to include an "id" parameter which, if set, stores the value in a page scoped attribute with the given name... This way I could do something like this: ... bean:message id="pageTitle" key="somePage.title"/ template:put name="title" content="%= pageTitle %" direct="true"/ ... Maybe there is already a mechanism to cleanly accomplish this...any pointers? Thanks, Troy
RE: Can I nest struts:message tag in struts:link tag?
When you say struts:message do you mean the 0.5 struts TLD, if so I don't know. I'm using struts 1.0 beta and you can do the following: html:link page="/something.do"bean:message key="x."//html:link -Original Message- From: JeanX [mailto:[EMAIL PROTECTED]] Sent: 27 March 2001 06:01 To: struts-user Subject: Can I nest struts:message tag in struts:link tag? Hi struts-user, Can I nest struts:message tag in struts:link tag ? Because I want to setup some query parameter in resources. Thx :=) Best regards, JeanX pacificnet.com(GZ)
RE: POSTing arrays in struts
This issue has come up quite regularly in the list. I got round this by
taking my own copies of struts tags and modifying them so that they check if
they are contained in an "IterateTag". If they are then I generate the name
appropriately using the property from the IterateTag, the current index
value and the property from the actual tag. Struts then automatically
populates the data back appropriately. You have to do something a bit more
complex if your using request rather than session scope to generate a bean
collection but thats the only issue.
For Example:
logic:iterate id="list" name="formExample" property="beanArray"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanArray[0].desc" value=".."/
input type="text" name="beanArray[1].desc" value=".."/
input type="text" name="beanArray[2].desc" value=".."/ etc. etc.
With my modified iterate and text ( BaseFieldTag) tags. This then
causes Struts to generate appropriate method calls to populate the values
back to the form [e.g. formExample.getBeanArray(0).setCode(..) etc.]
I detailed this a couple of times as a request but unfortunately so far no
one has given any feedback. Even if this proposal is no accepted then
putting the logic to generate the "name" attribute in separate methods which
could be overriden rather than copying the tag and having to change the
doStartTag() method would be really useful.
Previous messages:
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg05231.html
http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg00975.html
Niall
P.S I also have a similar issue where I want to overide the default
behaviour for setting the "value" attribute for another issue.
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 16:13
To: [EMAIL PROTECTED]
Cc: '[EMAIL PROTECTED]'
Subject: RE: POSTing arrays in struts
I don't really understand why I have to do this. That's a lot of code to
write too. The JSP code that I have below actually works on the read.
Struts handles it fine and I see the actual data sitting in the input
control when the form comes up in my browser. If struts can do that, I
can't see why struts can't go the other way and match it up on a
post so my
"form' already has the data way before the 'perform' method is called.
To:
"'[EMAIL PROTECTED]'"
"Taylor,
[EMAIL PROTECTED]
Jeremy" cc: (bcc: Will
Spies/Towers Perrin)
jtaylor@lehmSubject: RE: POSTing
arrays in struts
an.COM
04/09/01
11:04 AM
Please
respond to
struts-user
If all your input fields have the same name then when the form is
submitted
there will be a
in your Action class there will be a method "perform" has takes a
parameter
HttpServletRequest request,
so, rather than doing
PropertyUtils.copyProperties(user, form);
do something like
String[] rows = request.getParameterValues("InputFieldName");
form.setRows(rows);
-Original Message-
From: Will Spies/Towers Perrin [SMTP:[EMAIL PROTECTED]]
Sent: 09 April 2001 15:41
To: [EMAIL PROTECTED]
Cc: '[EMAIL PROTECTED]'
Subject: RE: POSTing arrays in struts
Ok. Now we are talking.
Q1: My save action class DOES work like the example. It gets
the form and
expects the ActionServlet to fill it up. By the time I get the form, the
ActionServlet is done with it? How would I change this to work properly
or
do I need a new version of the util class?
Q2: I was under the impression the html:text tags did not work properly
inside an iterate tag.
To:
"'[EMAIL PROTECTED]'"
"Taylor,
[EMAIL PROTECTED]
Jeremy" cc: (bcc: Will Spies/Towers
Perrin)
jtaylor@lehmSubject: RE: POSTing arrays
in struts
an.COM
04/09/01
10:32 AM
Please
respond to
struts-user
You don't need to generate index properties for the input tags.
Also, how does your save action class work? If you based it on
the struts
examples you'll need to
change it because the util class that copies bean properties won't work
with
the array of values for the rows property.
-Original Message-
From: Will Spies/Towers Perrin [SMTP:[EMAIL PROTECTED]]
Sent: 09 April 2001 15:13
To: [EMAIL PROTECTED]
Cc: '[EMAIL PROTECTED]'
Subject: RE: POSTing arrays in
RE: POSTing arrays in struts
I don't know if I understand your situation but is this a scope issue?
Either you use session scope and set up your beanArray before showing the
form, then when a POST is done Struts will call the appropriate setters on
the beans in the array. Or you use request scope which is a bit more tricky
because the bean array is empty so Struts can't call the setters. In this
case I got round this by generating beans as the setters were being called:
In my ActionForm class:
private Vector beanVector;
public MyBean getBeanVector(int index) {
if (beanVector == null)
beanVector = new Vector(15, 5);
if (index+1 beanVector.size()) {
for (int i = beanVector.size(); i index+1; i++) {
beanVector.add(new MyBean());
}
}
return (MyBean)beanVector.get(index);
}
Thus Struts tags:
logic:iterate id="list" name="myForm" property="beanVector"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanVector[0].desc" value="abc"/
input type="text" name="beanVector[1].desc" value="def"/
input type="text" name="beanVector[2].desc" value="ghi"/
Causing Struts to generate the following method call to populate your bean
array in your ActionForm:
getBeanVector(0).setDesc("abc");
getBeanVector(1).setDesc("def");
getBeanVector(2).setDesc("ghi");
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 20:37
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
Thanks for your reply. I did see these messages and I'm ok with fixing the
iterate tag issue. I have a bigger (related) problem. My problem
is when I
get a POST struts does not fill in my ActionForm correctly. For
example, in
your example my LoginForm would not contain a beanArray with 3
elements. It
would contain 0. Struts is failing to generate the proper getter calls as
far as I can tell.
To:
[EMAIL PROTECTED]
"Niall Pemberton" cc: (bcc:
Will Spies/Towers Perrin)
niall.pemberton@btIntSubject:
RE: POSTing arrays in struts
ernet.com
This issue has come up quite regularly in the list. I got round this by
taking my own copies of struts tags and modifying them so that they check
if
they are contained in an "IterateTag". If they are then I
generate the name
appropriately using the property from the IterateTag, the current index
value and the property from the actual tag. Struts then automatically
populates the data back appropriately. You have to do something a bit more
complex if your using request rather than session scope to generate a bean
collection but thats the only issue.
For Example:
logic:iterate id="list" name="formExample" property="beanArray"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanArray[0].desc" value=".."/
input type="text" name="beanArray[1].desc" value=".."/
input type="text" name="beanArray[2].desc" value=".."/ etc. etc.
With my modified iterate and text ( BaseFieldTag) tags. This then
causes Struts to generate appropriate method calls to populate the values
back to the form [e.g. formExample.getBeanArray(0).setCode(..) etc.]
I detailed this a couple of times as a request but unfortunately so far no
one has given any feedback. Even if this proposal is no accepted then
putting the logic to generate the "name" attribute in separate methods
which
could be overriden rather than copying the tag and having to change the
doStartTag() method would be really useful.
Previous messages:
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg05231.html
http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg00975.html
Niall
P.S I also have a similar issue where I want to overide the default
behaviour for setting the "value" attribute for another issue.
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 16:13
To: [EMAIL PROTECTED]
Cc: '[EMAIL PROTECTED]'
Subject: RE: POSTing arrays in struts
I don't really understand why I have to do this. That's a lot of code to
write too. The JSP code that I have below actually works on the read.
Struts handles it fine and I see the actual data sitting in the input
control when the form comes up in my browser. If struts can do that, I
can't see why struts can't go the other way and match it up o
RE: POSTing arrays in struts
Yes I have it working and I'm using the beta (i.e. version 1.0-b1).
Not quite sure what you mean by "one level of indirection lower" but my
suggestion is to set the debug level in BeanUtils - which is what
ActionServlet uses to populate the bean - it should give you a whole load of
output telling you what its trying to do - unfortunately its using
System.out.println so it'll come out to the tomcat console.
BeanUtils.setDebug(1); // its a static method
Otherwise you could try posting your code here and perhaps someone will be
able to spot whats going wrong.
Niall
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 21:30
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
That is my situation exactly. I've tried session scope and request scope.
For request, I did the same exact trick you have here. Both cases it's not
working for me. My ActionForm is not getting populated at all. I am one
level of indirection lower than what you have here but same
concept. If you
have this working though the problem could just be that I'm messing up
somewhere and one of my properties is coming back null. I didn't think so
though. What build are you using?
To:
[EMAIL PROTECTED]
"Niall Pemberton" cc: (bcc:
Will Spies/Towers Perrin)
niall.pemberton@btIntSubject:
RE: POSTing arrays in struts
ernet.com
I don't know if I understand your situation but is this a scope issue?
Either you use session scope and set up your beanArray before showing the
form, then when a POST is done Struts will call the appropriate setters on
the beans in the array. Or you use request scope which is a bit
more tricky
because the bean array is empty so Struts can't call the setters. In this
case I got round this by generating beans as the setters were
being called:
In my ActionForm class:
private Vector beanVector;
public MyBean getBeanVector(int index) {
if (beanVector == null)
beanVector = new Vector(15, 5);
if (index+1 beanVector.size()) {
for (int i = beanVector.size(); i index+1; i++) {
beanVector.add(new MyBean());
}
}
return (MyBean)beanVector.get(index);
}
Thus Struts tags:
logic:iterate id="list" name="myForm" property="beanVector"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanVector[0].desc" value="abc"/
input type="text" name="beanVector[1].desc" value="def"/
input type="text" name="beanVector[2].desc" value="ghi"/
Causing Struts to generate the following method call to populate your bean
array in your ActionForm:
getBeanVector(0).setDesc("abc");
getBeanVector(1).setDesc("def");
getBeanVector(2).setDesc("ghi");
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 20:37
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
Thanks for your reply. I did see these messages and I'm ok with fixing
the
iterate tag issue. I have a bigger (related) problem. My problem
is when I
get a POST struts does not fill in my ActionForm correctly. For
example, in
your example my LoginForm would not contain a beanArray with 3
elements. It
would contain 0. Struts is failing to generate the proper
getter calls as
far as I can tell.
To:
[EMAIL PROTECTED]
"Niall Pemberton" cc: (bcc:
Will Spies/Towers Perrin)
niall.pemberton@btIntSubject:
RE: POSTing arrays in struts
ernet.com
This issue has come up quite regularly in the list. I got round this by
taking my own copies of struts tags and modifying them so that
they check
if
they are contained in an "IterateTag". If they are then I
generate the name
appropriately using the property from the IterateTag, the current index
value and the property from the actual tag. Struts then automatically
populates the data back appropriately. You have to do something a bit
more
complex if your using request rather than session scope to generate a
bean
collection but thats the only issue.
For Example:
logic:iterate id="list" name="formExample" property="beanArray"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanArray[0].desc"
RE: POSTing arrays in struts
I looked at your first message and saw the code snippet you put there. I
tried out using your jsp code and put together a couple of classes got it
working no problem:
html:text property="data.rows[1].employeeName" size="30"
maxlength="30"/
One problem I did have was I had to change the above from "EmployeeName" to
"employeeName" to get it working.
I also used the following classes:
In the Action Form:
private TestBean data = new TestBean();
public TestBean getData() {
return data;
}
I created a TestBean as follows:
public class TestBean {
private EmplBean[] rows = new EmplBean[] {new EmplBean("Fred"), new
EmplBean("John")};
public EmplBean getRows(int index) {
return rows[index];
}
}
I created an EmplBean as follows:
public class EmplBean {
public String EmployeeName;
public EmplBean(String name) {
EmployeeName = name;
}
public String getEmployeeName() {
return EmployeeName;
}
public void setEmployeeName(String name) {
EmployeeName = name;
}
}
-Original Message-
From: Niall Pemberton [mailto:[EMAIL PROTECTED]]
Sent: 10 April 2001 01:03
To: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
Yes I have it working and I'm using the beta (i.e. version 1.0-b1).
Not quite sure what you mean by "one level of indirection lower" but my
suggestion is to set the debug level in BeanUtils - which is what
ActionServlet uses to populate the bean - it should give you a
whole load of
output telling you what its trying to do - unfortunately its using
System.out.println so it'll come out to the tomcat console.
BeanUtils.setDebug(1); // its a static method
Otherwise you could try posting your code here and perhaps someone will be
able to spot whats going wrong.
Niall
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 21:30
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
That is my situation exactly. I've tried session scope and
request scope.
For request, I did the same exact trick you have here. Both
cases it's not
working for me. My ActionForm is not getting populated at all. I am one
level of indirection lower than what you have here but same
concept. If you
have this working though the problem could just be that I'm messing up
somewhere and one of my properties is coming back null. I
didn't think so
though. What build are you using?
To:
[EMAIL PROTECTED]
"Niall Pemberton" cc: (bcc:
Will Spies/Towers Perrin)
niall.pemberton@btIntSubject:
RE: POSTing arrays in struts
ernet.com
I don't know if I understand your situation but is this a scope issue?
Either you use session scope and set up your beanArray before
showing the
form, then when a POST is done Struts will call the appropriate
setters on
the beans in the array. Or you use request scope which is a bit
more tricky
because the bean array is empty so Struts can't call the
setters. In this
case I got round this by generating beans as the setters were
being called:
In my ActionForm class:
private Vector beanVector;
public MyBean getBeanVector(int index) {
if (beanVector == null)
beanVector = new Vector(15, 5);
if (index+1 beanVector.size()) {
for (int i = beanVector.size(); i index+1; i++) {
beanVector.add(new MyBean());
}
}
return (MyBean)beanVector.get(index);
}
Thus Struts tags:
logic:iterate id="list" name="myForm" property="beanVector"
trtdhtml:text name="list" property="desc"//td
/logic:iterate
generates:
input type="text" name="beanVector[0].desc" value="abc"/
input type="text" name="beanVector[1].desc" value="def"/
input type="text" name="beanVector[2].desc" value="ghi"/
Causing Struts to generate the following method call to
populate your bean
array in your ActionForm:
getBeanVector(0).setDesc("abc");
getBeanVector(1).setDesc("def");
getBeanVector(2).setDesc("ghi");
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 20:37
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
Thanks for your reply. I did see these messages and I'm ok with fixing
the
iterate tag issue. I have a bigger (related) problem. My problem
is when I
RE: POSTing arrays in struts
Brilliant :-)
It was the substance I was concentrating on.
-Original Message-
From: Matthew O'Haire [mailto:[EMAIL PROTECTED]]
Sent: 10 April 2001 02:17
To: '[EMAIL PROTECTED]'
Subject: RE: POSTing arrays in struts
One problem I did have was I had to change the above from "EmployeeName"
to
"employeeName" to get it working.
Good Java style normally reserves Capitalized identifiers for class
declarations. Struts reflection expects you to be following bean naming
conventions and styles.
I created an EmplBean as follows:
With public get/set your bean memeber variable should be private
or at least
protected. Also, a little white-space never killed anyone.
public class EmplBean {
private String employeeName;
public EmplBean(String employeeName) {
this.mployeeName = employeeName;
}
public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
}
RE: POSTing arrays in struts
I tried it as an inner class and it worked fine.
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 10 April 2001 12:26
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
The uppercase was a typo. I simplified my snipet before putting
it up here.
In real life, it's lower case.
Your example is pretty much exactly what I have. The only difference is my
"EmplBean" is actually an inner class of my "TestBean". I have been using
the BeanUtils.setDebug and this is the kind of message I get from it when
it populates my Bean:
{action=[Ljava.lang.String;@508805ec, data.rows[1].empEmployeeId
=[Ljava.lang.String;@508005ec, org.apache.struts.taglib.html.TOKEN
=[Ljava.lang.String;@509805ec}
BeanUtils.populate(com.towers.bas.sample.EmploymentForm@48805ee, {action
=[Ljava.lang.String;@508805ec, data.rows[1].empEmployeeId
=[Ljava.lang.String;@508005ec, org.apache.struts.taglib.html.TOKEN
=[Ljava.lang.String;@509805ec})
name='action', value.class='[Ljava.lang.String;'
No such property, skipping
name='data.rows[1].empEmployeeId', value.class='[Ljava.lang.String;'
getPropertyDescriptor: java.lang.reflect.InvocationTargetException
No such property, skipping
name='org.apache.struts.taglib.html.TOKEN', value.class
='[Ljava.lang.String;'
getPropertyDescriptor: java.lang.NoSuchMethodException: Unknown
property 'org'
No such property, skipping
Some of these I've added myself. So, I'm getting an InvocationException
error. None of my classes are null and this all works when I pass it to my
view ( so I know my method names are proper since it works once using an
EditAction like example ).
I still think I'm screwing up somewhere somehow. I think you answered my
original question though. Since you have this working chances are my
problem is just that. My problem. I have learned that at least someone has
this working in the same version I'm using so chances are I just need to
figure out my own problem. Unless you think the inner class has something
to do with it ( yes, it's public )?
To:
[EMAIL PROTECTED]
"Niall Pemberton" cc: (bcc:
Will Spies/Towers Perrin)
niall.pemberton@btIntSubject:
RE: POSTing arrays in struts
ernet.com
I looked at your first message and saw the code snippet you put there. I
tried out using your jsp code and put together a couple of
classes got it
working no problem:
html:text property="data.rows[1].employeeName" size="30"
maxlength="30"/
One problem I did have was I had to change the above from
"EmployeeName" to
"employeeName" to get it working.
I also used the following classes:
In the Action Form:
private TestBean data = new TestBean();
public TestBean getData() {
return data;
}
I created a TestBean as follows:
public class TestBean {
private EmplBean[] rows = new EmplBean[] {new EmplBean("Fred"), new
EmplBean("John")};
public EmplBean getRows(int index) {
return rows[index];
}
}
I created an EmplBean as follows:
public class EmplBean {
public String EmployeeName;
public EmplBean(String name) {
EmployeeName = name;
}
public String getEmployeeName() {
return EmployeeName;
}
public void setEmployeeName(String name) {
EmployeeName = name;
}
}
-Original Message-
From: Niall Pemberton [mailto:[EMAIL PROTECTED]]
Sent: 10 April 2001 01:03
To: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
Yes I have it working and I'm using the beta (i.e. version 1.0-b1).
Not quite sure what you mean by "one level of indirection lower" but my
suggestion is to set the debug level in BeanUtils - which is what
ActionServlet uses to populate the bean - it should give you a
whole load of
output telling you what its trying to do - unfortunately its using
System.out.println so it'll come out to the tomcat console.
BeanUtils.setDebug(1); // its a static method
Otherwise you could try posting your code here and perhaps someone will
be
able to spot whats going wrong.
Niall
-Original Message-
From: Will Spies/Towers Perrin [mailto:[EMAIL PROTECTED]]
Sent: 09 April 2001 21:30
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: POSTing arrays in struts
That is my situation exactly. I've tried session scope and
request scope.
For request, I did the same exact trick you have here. Both
cases it's not
working for me. My ActionForm is not getting populated at
all. I am one
level of indirection lower than what you have here but same
concept. If you
have this working though the problem could just be that
RE: How to display the size of an Collection attribute of a bean?
How about implementing a getSize() method in your bean which returns the size, then you can use the tags such as bean:write -Original Message-From: Thai Thanh Ha [mailto:[EMAIL PROTECTED]]Sent: 10 April 2001 08:43To: [EMAIL PROTECTED]Subject: How to display the size of an Collection attribute of a bean? I want to display the size of an Collection attribute of a Bean using Struts taglibs. I can use scriptlet but are there any other ways to do that? Regards, Thai
RE: POSTing arrays in struts
No, you still need to change Struts to do this. Currently I believe they are on a feature freeze for 1.0. The following entry is on the 1.1 TODO list which I believe is the same issue. However there is no volunteer currently against this entry on the web Site and how it is implemented may be different to what I have done. HTML Tag Library "Improved Iteration Support. Improve the ability to use the logic:iterate tag over a collection, and generate a set of input fields for each member of the collection (perhaps auto-generating a subscript?). A significant use case is master-detail relationships (say, a customer and their current orders) where you allow editing of any and all fields. [STRUTS-USER, Lars, 12/06/2000] [STRUTS-USER, Chandan Kulkarni, 12/26/2000]" Niall -Original Message- From: Michael Mok [mailto:[EMAIL PROTECTED]] Sent: 11 April 2001 03:05 To: [EMAIL PROTECTED] Subject: RE: POSTing arrays in struts Niall Do we still have to apply the patch to the iterate and text tags as you mentioned in your previous email or can we use STRUTS without your patch? "With my modified iterate and text ( BaseFieldTag) tags. This then causes Struts to generate appropriate method calls to populate the values back to the form [e.g. formExample.getBeanArray(0).setCode(..) etc.]" TIA Regards, Michael Mok
RE: Action Forms And Model objects
We are currently building the following: 1) GenericActionForm with dynamic properties 2) Override ActionServlet to populate the GenericActionForm 3) Provide type validation conversion mechanisms in the GenericActionForm 4) Provide mechanism to unload the GenericActionForm into GenericBeans Our Actions initiate form validation, unload data into GenericBeans which are then passed to our logic layer and I believe this will allow us to put most of our effort into developing the JSP's and logic layer. -Original Message- From: Natra, Uday [mailto:[EMAIL PROTECTED]] Sent: 12 April 2001 20:17 To: '[EMAIL PROTECTED]' Subject: Action Forms And Model objects Hi All, I want to know how you all are desiging the Datacopy from ActionForm Beans to actual Model objects. In my opinion ActionForms should have only String DataTypes(Dates are represented as strings). But the Model objects have actual Data Types since they represent the actual Domain objects. If it is the case, we need to write code to copy the contents of the ActionForm into the Domain Object as we cannot use the PropertyUtils.copyProperties(formBean, modelObject); Can anybody comment on this?? Thanks, Uday.
RE: Action Forms And Model objects
I'm still developing/debugging it at the moment so its fairly rudimentary at
the moment. I'm still considering how I could devlop it at the moment -
possibly your XML idea.
I have extended Action and done some stuff in the perform method to cast the
form and manage a connection and then call a processForm() method. Also it
handles control with standard success failure forwards but I'm looking at
developing that as well - probably creating a transport object rather than
just returning a String message key.
A processForm() method validating input looks something like this:
protected String processForm(HttpServletRequest request,
HttpServletResponse response,
GenericActionForm form,
Connection connection) throws Exception {
// Validate the form
form.setRule("empl_id", true, form.INT);// required Integer
form.setRule("empl_name", true);// required String
form.setRule("empl_dob", true, form.DATE); // required date
form.setRule("empl_married", form.BOOLEAN); // optional Boolean
if (form.validateProperties() != null) {
return message;
}
// Store values from the form in GenericBean(s)
GenericBean bean = form.createBean();
// Process Business Logic
return message = new LogicBuildProgram().createBuildProgram(connection,
bean);
}
-Original Message-
From: Rajan Gupta [mailto:[EMAIL PROTECTED]]
Sent: 13 April 2001 13:32
To: [EMAIL PROTECTED]
Subject: RE: Action Forms And Model objects
How do you store or manage your validation rules since your
GenericActionForm could be validating fields types of forms?
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Niall-
To understand it a little better, does it mean that you do not allow
ActionServlet to call the validate() method on your GenericActionForm
since u do your validation in Action instead? Or I missed something!
Yes.
Also, do you store your validation rules in some type of a XML file or
similar?
No.
Further, I would imagine that your Action itself checks with the model
for
any incorrect data in the form if it needs to?
Yes.
I guess u still derive GenericActionForm from ActionForm
Yes.
-Rajan
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Normally you extend ActionForm and implement getters/setters for
each
property
e.g.public String getCustName()
public void setCustName(String name)
I have a GenericActionForm which has some standard getters/setters
e.g.public String getString(String property)
public void setString(String property, String value)
GenericActionForm stores these property/value pairs in internal
arrays.
I
have customised ActionServlet to populate these and also customised
some
of
the html tags to use the generic getter method if the form is an
instance
of my GenericActionForm.
I don't really know what you mean by "dynamic" validation of
properties.
When processing a GenericActionForm in the Action you can set up
rules
for
each of the properties to say whether it is required input and what
data
type it should be. The form has a validate method to check whats
been
received agaist those rules. Its not dynamic but it is straight
forward.
If the above checks fail, I can then re-display the form with the
values
entered. If the checks pass I can then safely populate the data into
beans
converting from Strings to the correct data types.
-Original Message-
From: Levi Cook [mailto:[EMAIL PROTECTED]]
Sent: 13 April 2001 01:05
To: [EMAIL PROTECTED]
Subject: Re: Action Forms And Model objects
Can you elaborate on what you mean by "dynamic" properties?
How does this refer to dynamic validation of properties?
-- Levi
- Original Message -
From: "Niall Pemberton" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, April 12, 2001 5:58 PM
Subject: RE: Action Forms And Model objects
We are currently building the following:
1) GenericActionForm with dynamic properties
2) Override ActionServlet to populate the GenericActionForm
3) Provide type validation conversion mechanisms in the
GenericActionForm
4) Provide mechanism to unload the GenericActionForm into
GenericBeans
Our Actions initiate form validation, unload data into
GenericBeans which
are then passed to our logic layer and I believe this will
allow us to put
most of our effort into developing the JSP's and logic layer.
-Original Message-
From: Natra, Uday [mailto:[EMAIL PROTECTED]]
S
RE: Action Forms And Model objects
JavaScript just makes the client side more interactive (which is good) but
it doesn't reduce the need to do stuff server side since for safety you
still need to repeat all the validation on the server side.
-Original Message-
From: Rajan Gupta [mailto:[EMAIL PROTECTED]]
Sent: 14 April 2001 04:50
To: [EMAIL PROTECTED]
Subject: RE: Action Forms And Model objects
ON 2nd thoughts, could one not achieve the results you are expecting using
client side JavaScript?
--- Rajan Gupta [EMAIL PROTECTED] wrote:
Niall,
I guess your formula does reduce coding for ActionsForms which require
simple validation do not need to access the model for any type of
validation, but I think you will still have to write a class for every
form where you will create your validation rules. This does not
eliminate
the total number of classes vs. the total number of classes required by
Struts. Please correct me if I did not get this right.
Maybe you could use XML-Schema to define every rules for every form.
Rules
can be associated based upon a form name which is handed over to
ActionServlet using a request parameter. The GenericActionForm can load
the XMLSchema for the form validate the the form input. Regardless, it
is good idea definetly worth pursuing with a purpose of reducing the
number of classes required in the application implementation.
Rajan Gupta
--- Niall Pemberton [EMAIL PROTECTED] wrote:
I'm still developing/debugging it at the moment so its fairly
rudimentary at
the moment. I'm still considering how I could devlop it at the moment
-
possibly your XML idea.
I have extended Action and done some stuff in the perform method to
cast
the
form and manage a connection and then call a processForm() method.
Also
it
handles control with standard success failure forwards but I'm
looking
at
developing that as well - probably creating a transport object rather
than
just returning a String message key.
A processForm() method validating input looks something like this:
protected String processForm(HttpServletRequest request,
HttpServletResponse response,
GenericActionForm form,
Connection connection) throws Exception
{
// Validate the form
form.setRule("empl_id", true, form.INT);// required Integer
form.setRule("empl_name", true);// required String
form.setRule("empl_dob", true, form.DATE); // required date
form.setRule("empl_married", form.BOOLEAN); // optional Boolean
if (form.validateProperties() != null) {
return message;
}
// Store values from the form in GenericBean(s)
GenericBean bean = form.createBean();
// Process Business Logic
return message = new
LogicBuildProgram().createBuildProgram(connection,
bean);
}
-Original Message-
From: Rajan Gupta [mailto:[EMAIL PROTECTED]]
Sent: 13 April 2001 13:32
To: [EMAIL PROTECTED]
Subject: RE: Action Forms And Model objects
How do you store or manage your validation rules since your
GenericActionForm could be validating fields types of forms?
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Niall-
To understand it a little better, does it mean that you do not
allow
ActionServlet to call the validate() method on your
GenericActionForm
since u do your validation in Action instead? Or I missed
something!
Yes.
Also, do you store your validation rules in some type of a XML
file or
similar?
No.
Further, I would imagine that your Action itself checks with the
model
for
any incorrect data in the form if it needs to?
Yes.
I guess u still derive GenericActionForm from ActionForm
Yes.
-Rajan
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Normally you extend ActionForm and implement getters/setters
for
each
property
e.g.public String getCustName()
public void setCustName(String name)
I have a GenericActionForm which has some standard
getters/setters
e.g.public String getString(String property)
public void setString(String property, String value)
GenericActionForm stores these property/value pairs in
internal
arrays.
I
have customised ActionServlet to populate these and also
customised
some
of
the html tags to use the generic getter method if the form
is
an
instance
of my GenericActionForm.
I don't really know what you mean by "dynamic" validation of
properties.
When processing a GenericActionForm in the Action
RE: Action Forms And Model objects
No, I don't agree with you.
My model is unchanged, containing validation rules, whether I use my
approach or standard Struts stuff.
I wouldn't have any validation rules in ActionForms if a could help it
except for the fact that, initially you need to store input as Strings so
that you can re-display what they user keyed in in the event of an error.
Using GenericActionForm and GenericBean I get rid of all the ActionForms and
"data" beans I had previously and can concentrate on the view (JSP's) and
model. For me it was alot less classes.
Thanks for your interest.
Niall
-Original Message-
From: Rajan Gupta [mailto:[EMAIL PROTECTED]]
Sent: 14 April 2001 01:46
To: [EMAIL PROTECTED]
Subject: RE: Action Forms And Model objects
Niall,
I guess your formula does reduce coding for ActionsForms which require
simple validation do not need to access the model for any type of
validation, but I think you will still have to write a class for every
form where you will create your validation rules. This does not eliminate
the total number of classes vs. the total number of classes required by
Struts. Please correct me if I did not get this right.
Maybe you could use XML-Schema to define every rules for every form. Rules
can be associated based upon a form name which is handed over to
ActionServlet using a request parameter. The GenericActionForm can load
the XMLSchema for the form validate the the form input. Regardless, it
is good idea definetly worth pursuing with a purpose of reducing the
number of classes required in the application implementation.
Rajan Gupta
--- Niall Pemberton [EMAIL PROTECTED] wrote:
I'm still developing/debugging it at the moment so its fairly
rudimentary at
the moment. I'm still considering how I could devlop it at the moment -
possibly your XML idea.
I have extended Action and done some stuff in the perform method to cast
the
form and manage a connection and then call a processForm() method. Also
it
handles control with standard success failure forwards but I'm looking
at
developing that as well - probably creating a transport object rather
than
just returning a String message key.
A processForm() method validating input looks something like this:
protected String processForm(HttpServletRequest request,
HttpServletResponse response,
GenericActionForm form,
Connection connection) throws Exception {
// Validate the form
form.setRule("empl_id", true, form.INT);// required Integer
form.setRule("empl_name", true);// required String
form.setRule("empl_dob", true, form.DATE); // required date
form.setRule("empl_married", form.BOOLEAN); // optional Boolean
if (form.validateProperties() != null) {
return message;
}
// Store values from the form in GenericBean(s)
GenericBean bean = form.createBean();
// Process Business Logic
return message = new
LogicBuildProgram().createBuildProgram(connection,
bean);
}
-Original Message-
From: Rajan Gupta [mailto:[EMAIL PROTECTED]]
Sent: 13 April 2001 13:32
To: [EMAIL PROTECTED]
Subject: RE: Action Forms And Model objects
How do you store or manage your validation rules since your
GenericActionForm could be validating fields types of forms?
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Niall-
To understand it a little better, does it mean that you do not
allow
ActionServlet to call the validate() method on your
GenericActionForm
since u do your validation in Action instead? Or I missed
something!
Yes.
Also, do you store your validation rules in some type of a XML
file or
similar?
No.
Further, I would imagine that your Action itself checks with the
model
for
any incorrect data in the form if it needs to?
Yes.
I guess u still derive GenericActionForm from ActionForm
Yes.
-Rajan
--- Niall Pemberton [EMAIL PROTECTED] wrote:
Normally you extend ActionForm and implement getters/setters for
each
property
e.g.public String getCustName()
public void setCustName(String name)
I have a GenericActionForm which has some standard
getters/setters
e.g.public String getString(String property)
public void setString(String property, String value)
GenericActionForm stores these property/value pairs in internal
arrays.
I
have customised ActionServlet to populate these and also
customised
some
of
the html tags to use the generic getter method if the form is
an
instance
of my GenericActionForm.
I don't really know what you mean by "dynam
RE: Obtaining multiple values from dynamically generate textboxes
Strut's tags could easily generate names of the format array[0].property if a tag is embedded in an IterateTag. This would cause the appropriate bean array to populate automatically - I have customised Struts to do this and it works fine. I have suggested this a couple of times but this has been totally ignored by Struts comitters - I assume they don't like the suggestion but its disappointing they are not prepared to discuss it - must be an ego thing ;-) http://www.mail-archive.com/struts-user@jakarta.apache.org/msg05231.html http://www.mail-archive.com/struts-dev@jakarta.apache.org/msg00975.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg06696.html I also have a general comment that if the tags were more granular in their design it would be easier to sub-class and modify behaviour - at the moment most doStartTag() methods are just one lump of code. Niall -Original Message- From: Walker, John H. [mailto:[EMAIL PROTECTED]] Sent: 27 April 2001 19:02 To: '[EMAIL PROTECTED]' Subject: RE: Obtaining multiple values from dynamically generate textboxes Thanks for that, It would be nice if struts handled this scenario automatically - you could specify a prefix/suffix for a property and all the struts tags on a JSP that use the prefix/suffix in their property name will be concatenated into an array and one call will be made to a set/get method based on the prefix/suffix only. e.g. html:select property=arrayTest1 . .. / html:select property=arrayTest2 . . . / Form Bean getArrayTest(String[]); // the prefix is ArrayTest and the rest is stripped off setArrayTest(String[]); I noticed the struts source does have a concept of a prefix/suffix for a Http parameter but I am not sure what they are doing with it? The solution of looping thru the Http parameter list will work but I would like to keep my data collection in the form bean and not have to move it to the action bean. The get/set methods do not pass in the request object so I would have to save the request in a member variable to access it in the setMethod() which is not pretty. We have a solution that uses javascript to loop thru the multiple HTML text, select objects and copies the values to a hidden field as a delimited string. When the page is submitted the setHiddenField() is called passing in all the values as a concatenated string. JW -Original Message- From: Web Programmer [mailto:[EMAIL PROTECTED]] Sent: Friday, April 27, 2001 10:30 AM To: [EMAIL PROTECTED] Subject: RE: Obtaining multilpe values from dynamically generate textboxes See Scott Walker's response to my question earlier today which worked. If you can't get it, post again. --- Gogineni, Pratima [EMAIL PROTECTED] wrote: Hi - I am doing something similar. Dont know if its the best way to do it. My form bean has an indexed property over a vector of values (so that its size can change dynamically ..) The form bean also has a size property which tells me how many values exist in the indexed property. in the JSP page I loop based on the size property and have html:text elements that display the indexed property in a text field. Pratima -Original Message- From: Walker, John H. [mailto:[EMAIL PROTECTED]] Sent: Friday, April 27, 2001 9:56 AM To: '[EMAIL PROTECTED]' Subject: Obtaining multilpe values from dynamically generate textboxes We have the senereo where we are dynamically generating a number of textfields. The number of textfields are not a known entity so we cannot have multiple setTextField1(), setTextField2().. . methods on the Action Form. How does struts handle this case where you basically want all the values of the textFields concatenated and passed into one Action Form method as an Array. Any ideas. Thanks John Walker __ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/
RE: Iterate certain number of times?
I know its not that elegant, but generate an array of page numbers in your
ActionForm based on the count
private int pageCount;
public String[] getPages() {
String[] pages = new String[pageCount];
for (int i = 0; i pageCount; i++) {
int j = i + 1;
pages[i] = +j;
}
return pages;
}
Alternatively, write your own Tag which will look up a specified value in
your bean and loop the appropriate number of times.
Niall
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 27 April 2001 20:29
To: [EMAIL PROTECTED]
Subject: Iterate certain number of times?
Hi.
Am wanting to iterate a certain number of times, based on a value
in my form
bean, to create a set of page links for the number of pages the
user can view
(similar to at the bottom of most search engine results).
How do I do this with Struts? Obviously I am not iterating over
a collection.
But surely it is possible - what am I missing?
Many thanks,
Dave
RE: i18n...
I think your solution below should be a last resort - I would look first at
trying to cure the performance problem you have and only after lots of
effort consider the route you're proposing.
How many messages do you have in each of your four properties files?
Is the performance problem just the first time you access a message for a
given locale? Does it improve subsequent times you run your jsp for a
locale?
MessageResources stores all messages in a single HashMap using a combination
of the locale and message key. The first time a locale is used it attempts
to load the messages for that locale.
1) If the performance problem is just the first time perhaps you could put a
getMessage(locale, key) call for each of your four locales when
ActionServlet starts up so that all messages for your four locales are
loaded ready.
2) Perhaps the HaspMap is getting too large with all your messages for your
four locales. I have had a quick peek in Struts source and its been designed
so that if you want you can create your own implementation of
MessageResources. You could try and implement a storage mechanism which
suits your situation better or is more efficient than the Struts one.
Struts provides the PropertyMessageResources and
PropertyMessageResourcesFactory classes as concrete implementations of
MessageResources and MessageResourcesFactory and these are the default
classes it uses. To create your own you just need to provide your own
concrete implementations of these classes and have a factory parameter in
your web.xml file for the ActionServlet configuration.
Niall
P.S. Having a tag look up a key value is never going to be as efficient as
what your proposing, which is effectively hard coding your literals in html,
but it shouldn't be as slow as what you say.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 27 April 2001 23:34
To: [EMAIL PROTECTED]
Subject: Re: i18n...
I hate to keep asking the same question but I haven't gotten any
repsonse yet.
One thought I have had is do do something like:
if(en)
{
jsp:include file=english.jsp/
}
else (fr)
{
jsp:include file=french.jsp/
}
etc...
What would be the performance drawbacks of something like this?
--
Jason Smith
[EMAIL PROTECTED]
- Original Message -
From: [EMAIL PROTECTED]
Date: Friday, April 27, 2001 12:53 pm
Subject: i18n...
I have a couple of questions.
I had a JSP in which I had approximately 40 bean:message tags for
i18n.
This page was taking 15 seconds to load. If I had two requests
for the
page at the same time it would take 45 to 60 seconds. Obviously
this is
not acceptable. When I replaced the bean:message tags with the
text,
the response time goes to a respectable 3 to 5 seconds with
multiple
hits. Therefore, I have to come up with another method of
internationalization.
I am new to this so I am looking for suggestions. I have to
support 4
languages. My current thought is to detect the browser's settings
and
forward the request to the appropriate JSP that is specific to the
language settings. I'm not sure exactly where this should be
done. I
would like it to be dynamic so that I can reuse FORM and ACTION
beans
for each related page.
Again, any suggestions would be appreciated.
--
Jason Smith
[EMAIL PROTECTED]
RE: html form widgets not appearing
LoadLocale is in the PropertyMessageResources class - it doesn't trap an error if it doesn't find your file. You could copy this class (MyMessageResources) and put out some messages showing the file name its trying to load and whether its sucessful. Also copy the PropertyMessageResourcesFactory (MyMessageResourcesFactory) class and change it to instantiate your MyMessageResources. Then change your ActionServlet configuration in web.xml and set a factory parm to your MyMessageResourcesFactory class. Struts then uses your classes for MessageResources. Niall P.S. I don't think its finding your file. -Original Message- From: G.L. Grobe [mailto:[EMAIL PROTECTED]] Sent: 28 April 2001 01:51 To: [EMAIL PROTECTED] Subject: Re: html form widgets not appearing The entire index.jsp file is included in this message so you can see the html source at the end. I havn't actually re-compiled the struts.jar file to see what was happening (because it wasn't easy to get working w/ orion server) but just by looking at MessageTag.java, I could see where in doStart() the message var came back as null and threw the exception when trying to read the key. I saw the file it was trying to read was correct by doing a println(getClass().getResource(my.properties)... in my jsp file. I'll look at this loadLocale to see how and where to use it. Thnxs. - Original Message - From: Jason Chaffee To: '[EMAIL PROTECTED]' Sent: Friday, April 27, 2001 7:09 PM Subject: RE: html form widgets not appearing What does the html source look like? You also might want to check the method loadLocale() and make sure the message strings are being loaded from the file. -Original Message- From: G.L. Grobe [mailto:[EMAIL PROTECTED]] Sent: Friday, April 27, 2001 5:11 PM To: [EMAIL PROTECTED] Subject: Re: html form widgets not appearing Heh, I've been on this prob for almost two weeks and I'm loosing motivation in this project because of this bug. My servlet config I believe is correct. I made it as simple as possible by putting the cais.properties file in the ~/WEB-INF/classes dir (no package path) and saying: !-- Action Servlet Configuration -- servlet servlet-nameaction/servlet-name servlet-classorg.apache.struts.action.ActionServlet/servlet-class init-param param-nameapplication/param-name param-valuecais/param-value /init-param Other keys are not being found as well. I know the correct file is being found as I println the ...getClass().getResources(cais.properties) and it shows it's got the correct path and according to the struts code, it's finding the file, but not the key. I'm pretty sure I'm referencing the key correclty: %@ page language=java % %@ taglib uri=/WEB-INF/struts-bean.tld prefix=bean % %@ taglib uri=/WEB-INF/struts-html.tld prefix=html % html:html head title bean:message key=main.title / /title - Original Message - From: Scott Cressler [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, April 27, 2001 6:58 PM Subject: RE: html form widgets not appearing Well, at least now you know you're invoking the bean:message tag. ;-) That's a problem I've found with debugging custom tags: if you forget the taglib directive or screw it up, you get no complaints. It seems to be saying it can't find your message by that key. Can you find any messages? Do you have the correct reference to the properties file in your web.xml file, e.g.: !-- Action Servlet Configuration -- servlet servlet-nameaction/servlet-name servlet-classorg.apache.struts.action.ActionServlet/servlet-class init-param param-nameapplication/param-name param-valuecom.propel.webapp.Resources/param-value /init-param In my case, that means the file is at webapproot/classes/com/propel/webapp/Resources.properties . I don't think it necessarily has to be there (isn't there some search path for finding it?), but that has worked for me (using resin). Make sure you can find any message and then make sure your tag is referencing the message key correctly, e.g., I would expect given what you've said it would be: bean:message key=main.title/ Scott -Original Message- From: G.L. Grobe [mailto:[EMAIL PROTECTED]] Sent: Friday, April 27, 2001 4:51 PM To: [EMAIL PROTECTED] Subject: Re: html form widgets not appearing I don't get it, if I match prefix=struts-bean w/ a tag of bean:message key ... it can't find the keys in the properties file, which I'd say is to be expected. But if I change the prefix=bean w/ tags of bean:message ... making the prefix and tag the same like it should be, then I get the following error. 500 Internal Server Error javax.servlet.jsp.JspException: Missing message for key main.title at org.apache.struts.taglib.bean.MessageTag.doStartTag(MessageTag .java:242) at /index.jsp._jspService(/index.jsp.java:136) (JSP page line 9) at com.orionserver[Orion/1.4.8 (build
Implement HTTP and HTTPS in a safe, flexible, and easily maintainable manner
This gives an example of how to integrate SSL into a Web App, using Struts as an example. http://www.javaworld.com/javaworld/jw-02-2002/jw-0215-ssl.html winmail.dat Description: application/ms-tnef -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Struts Basic/Pooling DataSource Vs Poolman
I haven't used poolman, but isn't the problem with it that it is no longer being developed? Niall -Original Message- From: hemant [mailto:[EMAIL PROTECTED]] Sent: 01 April 2002 23:12 To: struts Subject: Struts Basic/Pooling DataSource Vs Poolman I currently use poolman in my webapp. I was wondering if anyone got a chance to play with the classes in commons-dbcp.jar. How different are these from poolman?. I still dont think that Struts classes provide features such as resultset cache, periodic update of the cache with new data, query cache, Pool Management etc. Regards hemant -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
