i have written following code in
struts 1.2
test.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="/tlds/c.tld" prefix='c'%>
<%@ taglib uri="/tlds/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/tlds/struts-html.tld" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic"%>
<%@ taglib prefix="s" uri="/tlds/struts-tags.tld" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<html:form action="/testAction">
<html:select property="selectedItem">
<html:optionsCollection value="id" name="testForm" label="name" property="budgetHeadList"/>
</html:select>
</html:form>
</body>
</html>
testForm.java
package com.gramlekha.budget.ActionForm;
import java.util.ArrayList;
import org.apache.struts.action.ActionForm;
import com.gramlekha.bean.BudgetheadBean;
public class testForm extends ActionForm{
private
String selectedItem;
private ArrayList budgetHeadList;
public String getSelectedItem() {
return selectedItem;
}
public void setSelectedItem(String selectedItem) {
this.selectedItem = selectedItem;
}
public ArrayList getBudgetHeadList() {
return budgetHeadList;
}
public void setBudgetHeadList(ArrayList budgetHeadList) {
this.budgetHeadList=budgetHeadList;
}
}
testAction.java
package com.gramlekha.budget.Action;
import java.util.ArrayList;
import java.util.Collection;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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 com.gramlekha.bean.BudgetheadBean;
import com.gramlekha.budget.ActionForm.testForm;
public class testAction extends Action{
public ActionForward execute(ActionMapping mapping,
ActionForm form,HttpServletRequest request,HttpServletResponse response){
testForm test=(testForm) form;
ArrayList<BudgetheadBean> budgetheads=new ArrayList<BudgetheadBean>();
budgetheads.add(new BudgetheadBean(1,"head 1"));
budgetheads.add(new BudgetheadBean(2,"head 2"));
budgetheads.add(new BudgetheadBean(3,"head 3"));
budgetheads.add(new BudgetheadBean(4,"head 4"));
budgetheads.add(new BudgetheadBean(5,"head 5"));
System.out.println("List Created: "+budgetheads);
test.setBudgetHeadList(budgetheads);
return mapping.findForward("success");
}
}
struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
<data-sources />
<form-beans>
<form-bean name="testForm" type="com.gramlekha.budget.ActionForm.testForm"></form-bean>
</form-beans>
<global-exceptions>
</global-exceptions>
<global-forwards>
</global-forwards>
<action-mappings>
<action
path="/testAction"
type="com.gramlekha.budget.Action.testAction"
name="testForm"
scope="session"
validate="true"
input="/jsp/Budget/test.jsp">
<forward name="success" path="/jsp/Budget/test.jsp"></forward>
</action>
</action-mappings>
<message-resources parameter="resource.ApplicationResources" />
<plug-in className="org.apache.struts.tiles.TilesPlugin">
<set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml" />
<set-property property="moduleAware" value="true" />
<set-property property="definitions-parser-validate" value="true" />
</plug-in>
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames" value="/WEB-INF/Validation/validator-rules.xml,/WEB-INF/Validation/validation.xml"/>
</plug-in>
<plug-in className="net.sf.navigator.menu.MenuPlugIn">
<set-property property="menuConfig" value="/WEB-INF/menu-config.xml" />
</plug-in>
</struts-config>
BudgetheadBean.java
package com.gramlekha.bean;
public class BudgetheadBean {
private Integer id;
private String name;
public BudgetheadBean(){
}
public BudgetheadBean(Integer id,String name){
this.id=id;
this.name=name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
};
public String getLabel(){
return name;
}
public Integer getValue(){
return id;
}
}
Showing Error
javax.servlet.ServletException: Failed to obtain specified collection
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.jsp.Budget.test_jsp._jspService(test_jsp.java:92)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:416)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
root cause
javax.servlet.jsp.JspException: Failed to obtain specified collection
org.apache.struts.taglib.html.OptionsCollectionTag.doStartTag(OptionsCollectionTag.java:178)
org.apache.jsp.jsp.Budget.test_jsp._jspx_meth_html_optionsCollection_0(test_jsp.java:178)
org.apache.jsp.jsp.Budget.test_jsp._jspx_meth_html_select_0(test_jsp.java:149)
org.apache.jsp.jsp.Budget.test_jsp._jspx_meth_html_form_0(test_jsp.java:114)
org.apache.jsp.jsp.Budget.test_jsp._jspService(test_jsp.java:82)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:416)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
Whats the problem.??can anyone help
