Hi Timo
I am new bie and learning to populate the drop box by all different ways . no body
has replied for alomst a 4-5 days pl. help me...
population of data by different ways which are as below
1. By Collections of strings
2. By collections beans
3. Hard coding
I am unable to achieve even first way tried a lot but failed can any body suggest me
where I am wrong. Also pl. suggest me how the “collection of beans” will be coded .
any body has simple java nd jsp code please Post me
Manay many thanks
Regrds
StrutsGuy
[EMAIL PROTECTED]
Below is Jps ,stutsconfig and java files and errors of browser .
<%@ page language="java" import="StudentForm" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<jsp:useBean id="sf" class="StudentForm" scope="session" >
</jsp:useBean>
<html:html>
<head>
<title><bean:message key="hello"/> </title>
</head>
<body>
<B>LOGIN PAGE <B>
<html:errors />
<html:form action="/LoginForm" focus="studentid" onsubmit="return
validateStudentForm(this);">
<table>
<html:select property="passwd" >
<html:options name="sf" labelName="sf" />
</html:select>
<td>LOGIN ID</td>
<td><html:text property="student"/></td>
<td>PASSWORD</td>
<td><html:text property="passwd"/> </td>
</table>
<html:submit><bean:message key="button"/></html:submit>
<html:reset><bean:message key="reset"/></html:reset>
<html:cancel><bean:message key="cancel" /></html:cancel>
</html:form>
<html:javascript formName="studentForm" dynamicJavascript="true"
staticJavascript="true"/>
<script language="Javascript1.1" src="staticJavascript.jsp"></script>
</body>
</html:html>
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import org.apache.commons.beanutils.BeanUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.*;
import javax.servlet.jsp.PageContext;
// use The seSSion stuf
public class StudentAction extends Action
{
public ActionForward execute( ActionMapping map,ActionForm form, HttpServletRequest
req , HttpServletResponse res) throws Exception
{
String action = req.getParameter("action");
if (action == null)
{
StudentDatabase stBase = new StudentDatabase ();
StudentForm sf= new StudentForm();
String[] str = stBase.getAllNames();
String strng ="blah" ;
sf.setPasswd(strng);
req.setAttribute("sf", sf);
ActionErrors er= new ActionErrors();
er.add(ActionErrors.GLOBAL_ERROR , new ActionError("errorRakesh"));
if(!er.empty())
{
saveErrors(req,er);
return(map.findForward("RakyError"));
}
else
return(map.findForward("RakyCancel"));
}
else
{
return(map.findForward("RakyCancel"));
}
}// end of class
}
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.*;
import org.apache.struts.validator.ValidatorForm;
public class StudentForm extends ValidatorForm
{
private int student =0;
private String passwd = null;
public StudentForm()
{
student=0;
passwd = new String();
}
public StudentForm( int student ,String passwd)
{
student=student;
passwd= passwd;
}
public int getStudent()
{
return this.student;
}
public void setStudent(int student)
{
this.student=student;
}
public String getPasswd( )
{
return this.passwd;
}
public void setPasswd(String passwd)
{
this.passwd=passwd;
}
public void reset(ActionMapping mapping ,HttpServletRequest request)
{
this.student=0;
this.passwd=null;
}
public ActionErrors validate( ActionMapping map,HttpServletRequest req)
{
ActionErrors errors=super.validate(map,req);
if(student == 0)
{
System.out.println("HELLO blah "+student);
errors.add("student", new ActionError("IDProblem"));
}
return errors;
} // end of action errors
}// end of Student from class
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd";>
<!-- This is the Struts configuration file for the rakesh application -->
<struts-config>
<!-- Form bean smust be maped here first -->
<form-beans>
<form-bean name="StudentForm" type="StudentForm"/>
</form-beans>
<!-- All Action msut be mapped here -->
<action-mappings>
<!-- Calling a jsp page through link -->
<action path="/LoginJsp" forward="/Login.jsp"/>
<action path="/LoginForm" type="StudentAction" name="StudentForm" scope="request"
validate="true">
<forward name="RakySuccess" path="/Start.jsp"/>
<forward name="RakyCancel" path="/Start.jsp"/>
<forward name="RakyError" path="/Start.jsp"/>
</action>
</action-mappings>
<message-resources parameter="propertyInfo" />
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames" value="/WEB-INF/validator-rules.xml,
/WEB-INF/validation.xml"/>
</plug-in>
</struts-config>
propertyInfo.properties
hello=This is test page
start=This is first page of the application
info=This page stores contains text files and drop downs
error=There is problem please have a look
submit=ADD TO DATABASE
clear=Clear the Data
cancel=Cancel Button
click=Please Click to start the application
button=Login
cancel=CancelButton
reset=ResetButton
IDProblem=There is problem in id has greater value than 4 pl. recheck it
prompt.username= Please Enter the User Name by blah
prompt.password=Please enter the password by bla
errors.required={0} is required.
errors.minlength={0} cannot be less than {1} characters.
errors.maxlength={0} cannot be greater than {2} characters.
errors.invalid={0} is invalid.
errors.byte={0} must be an byte.
errors.short={0} must be an short.
errors.integer={0} must be an integer.
errors.long={0} must be an long.
errors.float={0} must be an float.
errors.double={0} must be an double.
errors.date={0} is not a date.
errors.range={0} is not in the range {1} through {2}.
errors.creditcard={0} is not a valid credit card number.
errors.email={0} is an invalid e-mail address.
rakeshErROR=This is first ssuccessfyl errro by blah
errorRakesh=This is type of error in jsp page
eError is
HTTP Status 500 -
________________________________________
type Exception report
message
description The server encountered an internal error () that prevented it from
fulfilling this request.
exception
org.apache.jasper.JasperException: Cannot create iterator for [EMAIL PROTECTED]
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254)
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(ApplicationDispatcher.java:684)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:432)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:356)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1014)
at
org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:961)
at
org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:544)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:252)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1292)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
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(ApplicationFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2416)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline
On Sun, 14 Mar 2004 Timo Tjäder wrote :
>Hi,
>
>Thanks Hubert, the problem was on the html page.
>
>1. I forgot to add second form tag to handle page linking system on footer.
>2. Also as you mentioned all the parameters must be match with the form beans I am
>posting.
>
>After making those changes the combox box was redered nicely on same lone
>with navigation numbers.
>
>1 2 3 4 5 next COMBOBOX v
>
>I have one rule when writing jsp pages and it is "no scriplets anymore".
>The Struts handles everything nicely if some time is offered in designing
>the beans and linking system.
>
>In this case mine is
>
>WEB->FORM->ACTION->SERVICE->BEAN
>WEB<-FORM<-ACTION<-SERVICE<-BEAN
>
>Service sets the values and they are read from the page using
>struts tags (equal/iterate/present). The totalNumOfPagesCollection
>comes actually from BEAN.
>
>Thanks,
>
>Timo
>
>
> >
> >The <html:select> needs to be provided with the property it's associated to,
> >the one on your form bean that will hold the actual value selected.
> >
> ><html:select property="mySelectValue" style="font-size: 10px;"
> >property="goTo" size="1">
> > <html:optionsCollection
> > name="PageDetailView"
> > property="totalNumOfPagesCollection"
> > />
> ></html:select>
> >
> >"mySelectValue" should be a property on your form bean.
> >
> >hth,
> >
> >Hubert
> >
> >
> >
> >--- Timo_Tjäder <[EMAIL PROTECTED]> wrote:
> >> Hi,
> >>
> >> I have problems with optionsCollection, when used with <html:select>
> >> custom tag.
> >>
> >> 1. I set up in a bean LabelValueBean object in a Vector
> >> 2. pass it back to form and try to create a <html:selec>
> >>
> >> This part should display a combo box with options, but
> >> it just does not work. It does not display anything.
> >>
> >> Html code is as follows:
> >>
> >> <html:select style="font-size: 10px;" property="goTo" size="1">
> >> <html:optionsCollection name="PageDetailView"
> >> property="totalNumOfPagesCollection"/>
> >> </html:select>
> >>
> >> I have checked using struts "bean:write" the contents of
> >> the object. Bean write claims that totalNumOfPages really
> >> contains LabelValueBean-objects (14 peaces).
> >> LabelValueBeanÄ1, 1Å, LabelValueBeanÄ2, 2Å, LabelValueBeanÄ3, 3Å,
> >> ...
> >>
> >> So, does anyone know how to reference to this object correctly.
> >> Current solution does not diaplay anything to the screen.
> >>
> >> Thanks,
> >>
> >> Timo
> >>
> >> So what I'd like to do is display a selection list of
> >> all availabele pages from which user choose one and press
> >> a goTo page button. This is quite common web control in
> >> any web pages.
> >>
> >>
> >> ....
> >> <logic:equal name="PageDetailView" property="linkType"
> >> value="add-total-num-of-pages-collection">
> >> <bean:write name="PageDetailView.totalNumOfPagesCollection"
> >> property="LabelValueBean"/>
> >>
> >> <html:select style="font-size: 10px;" property="goTo" size="1">
> >> <html:optionsCollection name="PageDetailView"
> >> property="totalNumOfPagesCollection"/>
> >> </html:select>
> >> </logic:equal>
> >>
> >>
> >>
> >> Ä1Å 2 3 4 5 next + Result 14 pages.
> >> ....
> >> ÄLabelValueBeanÄ1, 1Å, LabelValueBeanÄ2, 2Å, LabelValueBeanÄ3, 3Å,
> >> LabelValueBeanÄ4, 4Å, LabelValueBeanÄ5, 5Å, LabelValueBeanÄ6, 6Å,
> >> LabelValueBeanÄ7, 7Å, LabelValueBeanÄ8, 8Å, LabelValueBeanÄ9, 9Å,
> >> LabelValueBeanÄ10, 10Å, LabelValueBeanÄ11, 11Å, LabelValueBeanÄ12,
> >> 12Å, LabelValueBeanÄ13, 13Å, LabelValueBeanÄ14, 14ÅÅ
> >>
> >>
> >> ---------------------------------------------------------------------
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> >>
> >
> >
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