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HI,
well, if ur using struts1.0, LabelValueBean is no supported..
u can still get that class from the struts1.1 jar and use it...
(or)
u can create a simple javabean with two variables, with set,get
methods and use it
it is as easy
-- nagi
-------Original Message-------
Date: Wednesday, July
23, 2003 04:09:00 PM
Subject: RE: drop-down
list help
Swaroop,
You are right. I have commented
LabelValueBean statements and I got the displayed with a blank dropdown
list.
My bean method is now as follows:
public Collection
getCountries() {
ArrayList countries = new
ArrayList();
//countries.add(new LabelValueBean("Australia",
"1000"));
//countries.add(new LabelValueBean("New Zealand",
"1001"));
//countries.add(new LabelValueBean("India",
"1003"));
return countries;
}
How to get data into this if I
don't use LabelValueBean. What have you used? Can you post your code for
DropDownCollections.java please?
Sriram
-----Original
Message-----
From: Swaroop George [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 3:34 PM
To: Struts Users Mailing
List
Subject: RE: drop-down list help
I don't think u r
proceeding the right way.. When u removed property what has happened is u
have eliminated the getCountries method call.. and thus u r able to see ur
3rd print statement. U need to have the property cauz the collection u
need is an attribute of the DropDownCollections class, not the
DropDownCollections class itself..(which is why its saying Cannot create
iterator for DropDownCollections)..
Internally it creates an
iterator out of the collection returned which its not able to create cauz
there is no collection returned at all.. I doubt ur new LabelValueBean is
throwing an error. Please do remove the exception handling from ur
class..
-----Original Message-----
From: sriram [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 3:21 PM
To: 'Struts Users Mailing
List'
Subject: RE: drop-down list help
Swaroop,
I have
made a change to <bean:define>.
I removed 'property' --> (If
not specified, the bean identified by name is given a new reference
identified by id.)
Then my println statements are working till Step
3. So, I presume the previous problem is solved.
There's some
problem now with <html:select>.....
Trying to debug
that:
15:23:26,419 ERROR [Engine]
ApplicationDispatcher[/mobilemail_1_0]
Servlet.servi
ce() for
servlet jsp threw exception
org.apache.jasper.JasperException: Cannot
create iterator for [EMAIL PROTECTED]
Probably I need to
use <html:optionsCollection> instead of
<html:options>
Sriram
-----Original
Message-----
From: Swaroop George [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 3:12 PM
To: Struts Users Mailing
List
Subject: RE: drop-down list help
Yes I know that there
is something wrong in bean:define. As the next step remove the try {}
catch{} block in the getCountries method. Let it show up where exactly its
failing..
-----Original Message-----
From: sriram [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 3:00 PM
To: 'Struts Users Mailing
List'
Subject: RE: drop-down list help
:-(
Same error! I
modified the function as follows:
public Collection getCountries()
{
ArrayList countries = new ArrayList();
try{
countries.add(new
LabelValueBean("Australia",
"1000"));
countries.add(new
LabelValueBean("New Zealand",
"1001"));
countries.add(new
LabelValueBean("India", "1003"));
} catch (Exception ex)
{
System.out.println(".............exception");
ex.printStackTrace();
}
return
countries;
}
In my jsp page, I have given println statements to
trace out where exactly the problem is:
<%
System.out.println("....................................Step 1"); %>
<jsp:useBean id="dropdown" scope="application"
class="com.xxx.utils.DropDownCollections"/>
<%
System.out.println("....................................Step 2");
%>
<bean:define id="countries" name="dropdown"
property="countries" toScope="request"/> <%
System.out.println("....................................Step 3");
%>
The output on the console is:
15:02:53,937 INFO
[STDOUT] ....................................Step 1 15:02:53,957 INFO
[STDOUT] ....................................Step 2 15:02:54,147 ERROR
[Engine] ApplicationDispatcher[/mobilemail_1_0]
Servlet.servi
ce()
for servlet jsp threw exception
org.apache.jasper.JasperException:
Exception thrown by getter for property count ries of bean
dropdown
Step 1 and Step2 statements are printed on the console
but Step 3 is not printed. So, there's something wrong in
<bean:define..../>
Sriram
-----Original
Message-----
From: Swaroop George [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 2:49 PM
To: Struts Users Mailing
List
Subject: RE: drop-down list help
Think I got it..
Change ur method as public Collection getCountries() and
try..
Swaroop
-----Original Message-----
From: sriram
[mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 2:17 PM
To: 'Struts Users Mailing
List'
Subject: RE: drop-down list help
Swaroop,
I have
given a system.out.println statement in catch block (as follows): public
ArrayList getCountries() {
ArrayList countries = new
ArrayList();
try{
countries.add(new
LabelValueBean("Australia",
"1000"));
countries.add(new
LabelValueBean("New Zealand",
"1001"));
countries.add(new
LabelValueBean("India", "1003"));
} catch (Exception ex)
{
System.out.println(".............exception");
ex.printStackTrace();
}
return
countries;
}
But nothing is printed on app. server console
except for the exception that I've mentioned
before.
Sriram
-----Original Message-----
From: Swaroop
George [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 2:13 PM
To: Struts Users Mailing
List
Subject: RE: drop-down list help
Sriram,
} catch
(Exception ex) {
ex.printStackTrace();
}
This exception block
wont be shown on the JSP page.. but will be shown on ur appserver's output
window. Check whether any such exception is being
thrown..
Swaroop
-----Original Message-----
From: sriram
[mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 23, 2003 2:00 PM
To: 'Struts Users Mailing
List'
Subject: RE: drop-down list help
Nagendra,
I have
modified the bean as follows:
public class DropDownCollections
{
private ArrayList countries = new ArrayList();
public
ArrayList getCountries() {
ArrayList list = new
ArrayList();
try{
countries.add(new LabelValueBean("Australia",
"1000"));
countries.add(new LabelValueBean("New Zealand",
"1001"));
countries.add(new LabelValueBean("India", "1003"));
}
catch (Exception ex) {
ex.printStackTrace();
}
return
countries;
}
public void setCountries(ArrayList countries)
{
this.countries = (ArrayList)countries;
}
}
Still I'm
getting the same error.
The stack trace is given
below:
javax.servlet.jsp.JspException: Exception thrown by getter
for property countries of bean dropdown
at
org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:964)
at
org.apache.struts.taglib.bean.DefineTag.doEndTag(DefineTag.java:266)
at
org.apache.jsp.userview_jsp._jspService(userview_jsp.java:199)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja
va:210)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatc
her.java:684)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDisp
atcher.java:432)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispat
!
cher.java:356)
at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.jav
a:1069)
at
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestPr
ocessor.java:455)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
279)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invok!
e(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja
va:246)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241
5)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatc!
herValve.java:171)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:172)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i
nvokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
80)
at
org.apache.catalina.core.ContainerBase.invoke!
(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:59
4)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processC
onnection(Http11Protocol.java:392)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:56
5)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
..java:619)
at java.lang.Thread.run(Thread.java:536)
In stack trace, it's
showing an error at line 199 of userview_jsp.java. This line has the
following code:
if (_jspx_th_bean_define_0.doEndTag()
==
javax.servlet.jsp.tagext.Tag.SKIP_PAGE)
Further down the
stack trace (not pasted above), it's showing error at line 2073 of the
same file and the code in that line is: } catch (Throwable t) {
out =
_jspx_out;
if (out != null && out.getBufferSize() !=
0)
out.clearBuffer();
if (pageContext != null)
pageContext.handlePageException(t); --> line 2073 .... }
Can
you get any idea about why it's giving that error from the above
information? Pl. inform.
Sriram
-----Original
Message-----
From: Nagendra Kumar O V S [mailto:[EMAIL PROTECTED]]
Sent:
Wednesday, July 23, 2003 1:27 PM
To: [EMAIL PROTECTED]
Subject:
RE: drop-down list help
hi,
i guess u r not following
the java-bean rules
private ArrayList countries = new
ArrayList();
public ArrayList getCountries() {
// here u can
populate the arraylist... as u did earlier
return
countries;
}
public void setCountries(ArrayList countries)
{
this.countries = countries;
}
this is what the java bean
signature should look like....
-- nagi
-------Original
Message-------
From: Struts Users Mailing <mailto:[EMAIL PROTECTED]>
List
Date: Wednesday, July 23, 2003 12:54:20 PM
To: 'Struts Users
Mailing <mailto:[EMAIL PROTECTED]>
List'
Subject: RE: drop-down list help
Swaroop,
I am
trying to implement the way you have mentioned for populating drop
downs.
I'm getting the following
exception:
javax.servlet.ServletException: Exception thrown by
getter for property countries of bean dropdown
Here's the code
that I'm using:
<jsp:useBean id="dropdown" scope="application"
class="com.xxx.DropDownCollections">
</jsp:useBean>
<bean:define
id="countries" name="dropdown" property="countries" toScope="request"
/>
Bean Class:
package com.xxx;
public class
DropDownCollections {
private ArrayList countries = new
ArrayList();
public Collection getCountries() {
//ArrayList
list = new ArrayList();
try{
countries.add(new
LabelValueBean("Australia", "1000")); countries.add(new
LabelValueBean("New Zealand", "1001")); countries.add(new
LabelValueBean("India", "1003")); } catch (Exception
ex) {
ex.printStackTrace(); } return countries; }
public void
setCountries(Collection options) {
// No op, here to satisfy
bean-ness.
}
}
Any possible solution? Please
inform.
Sriram
-----Original Message-----
From: Swaroop
George [mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ]
Sent: Tuesday, July 22, 2003 6:36 PM
To: Struts Users Mailing
List
Subject: RE: drop-down list help
<jsp:useBean
id="dropdown" scope="application"
class="com.xxx.DropdownCollections">
</jsp:useBean>
<bean:define
id="months" name="dropdown" property="months"
toScope="request"/>
<html:select property="month>
<html:options collection="months" property="key"
labelProperty="value"/> </html:select>
Hi this is a
part of the page I developed.. (Ofcourse a commercial
application..) I
have a class called DropDownCollections.java Now in the class I have a
method getMonths() which will return me a collection of months..
I
am using the months collection to populate the options..
You can
actually use an html:select instead of a nested:select
The
getMonths() returns a set of beans having two attributes key and value..
Key will be the month numbers 1,2,3,4.. While value will be month names
Jan, Feb,.. While the dropdown is rendered the month name will be shown..
When the page is submitted the month num(key) will be set to the property
'month'
Hope it helps..
Swaroop
-----Original
Message-----
From: Rick Col [mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ]
Sent: Tuesday, July 22, 2003 6:24 PM
To: Struts Users Mailing
List
Subject: drop-down list help
Hi, guys:
I am a struts
newbie. I have spent sevaral days trying
build a struts page with
several drop-down lists in
vain. I am wondering there are any struts
drop down
lists examples out there. I appreciate your help.
regards,
__________________________________
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