Tuesday, January 12, 2010

[Java] Having Struts2 Ajax implimentation Problem

 

Error in jsp page-- when i add   <s:head theme="ajax"/> in my jsp then it shows some error-org.apache.jasper.JasperException: Expression parameters.parseContent is undefined on line 45, column 28 in template/ajax/head.ftl. - Class: freemarker.core.TemplateObject
File: TemplateObject.java -

my jsp page-

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">

<%@taglib prefix="s" uri="/struts-tags"%>

<html>
   
    <head>
        <s:head theme="ajax"/>
        <title>Chetan</title>
    </head>
    <script>
        function show_details() {
            dojo.event.topic.publish("show_detail");
        }
    </script>
    <body>
       
        <s:form id="frm_demo" name="frm_demo" theme="simple">
            <table border="0">
                <tr>
                    <td><s:select list="lstList1" name="lst"
                              onchange="javascript:show_details();return false;" ></s:select>
                    </td>
                    <td><s:url id="d_url" action="DetailAction" />
                      <%--  <s:div showLoadingText="false" id="details" href="%{d_url}" theme="ajax"
                                           listenTopics="show_detail" formId="frm_demo">
                        </s:div>--%>
                    </td>
                </tr>
            </table>
        </s:form>
    </body>
</html>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<%@taglib prefix="s" uri="/struts-tags" %>

<s:if test="lstList != null">
<s:select list="lstList"></s:select>
</s:if>

web.xml file-

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <filter>
        <filter-name>struts</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    </web-app>

struts.xml
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <package name="StrutsAjax" extends="struts-default">

        <action name="ListingAction" class="ajaxdemo.action.ListingAction">
            <result>/Listing.jsp</result>
        </action>

        <action name="DetailAction" class="ajaxdemo.action.DetailAction">
            <result>/Detail.jsp</result>
        </action>

    </package>
</struts>

action class-

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ajaxdemo.action;

import com.opensymphony.xwork2.ActionSupport;
import java.util.ArrayList;
import java.util.List;

public class ListingAction extends ActionSupport {
private List lstList1 = null;

public String execute() throws Exception {
    System.out.println("in ListingAction...");
populateDetail();

return SUCCESS;
}

private void populateDetail() {
lstList1 = new ArrayList();
lstList1.add("Fruits");
lstList1.add("Places");
lstList1.add("Others");

}

public List getLstList1() {
return lstList1;
}

public void setLstList1(List lstList1) {
this.lstList1 = lstList1;
}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package ajaxdemo.action;

import java.util.ArrayList;
import java.util.List;

import com.opensymphony.xwork2.ActionSupport;

public class DetailAction extends ActionSupport {
private String lst;
private List lstList = null;
private List lstList2 = null;

public String execute() throws Exception {

if (getLst() != null && !getLst().equals("")) {
populateDetail(getLst());
return SUCCESS;
} else {
return SUCCESS;
}
}

private void populateDetail(String id) {
lstList = new ArrayList();
if (id.equalsIgnoreCase("Fruits")) {
lstList.add("Apple");
lstList.add("PineApple");
lstList.add("Mango");
lstList.add("Banana");
lstList.add("Grapes");
} else if (id.equalsIgnoreCase("Places")) {
lstList.add("New York");
lstList.add("Sydney");
lstList.add("California");
lstList.add("Switzerland");
lstList.add("Paris");
} else {
lstList.add("Other 1");
lstList.add("Other 2");
lstList.add("Other 3");
lstList.add("Other 4");
lstList.add("Other 5");
}
}

public List getLstList() {
return lstList;
}

public void setLstList(List lstList) {
this.lstList = lstList;
}

public String getLst() {
return lst;
}

public void setLst(String lst) {
this.lst= lst;
}
}

Thanking You
Chetan Patel

The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

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