Struts2+JQuery发送Ajax请求

Action类代码:

 1 package com.example.action;
 2 
 3 public class JsonAction {
 4     private String name;
 5     private int id;
 6 
 7     public String test() {
 8         name = "hello world";
 9         id = 100;
10         return "success";
11     }
12 
13     public String getName() {
14         return name;
15     }
16 
17     public void setName(String name) {
18         this.name = name;
19     }
20 
21     public int getId() {
22         return id;
23     }
24 
25     public void setId(int id) {
26         this.id = id;
27     }
28 
29 }

　　struts.xml

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
 3 <struts>
 4     <package name="demo" extends="json-default" namespace="/">
 5         <action name="jsonTest" class="com.example.action.JsonAction" method="test">
 6             <result name="success" type="json">
 7                 <param name="contentType">text/plain</param>
 8             </result>
 9         </action>
10     </package>
11 </struts>

jsonTest.jsp页面代码:

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5     <head>
 6         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7         <script type="text/javascript" src="js/jquery-1.7.min.js"></script>
 8         <script type="text/javascript">
 9             $(function(){
10                 $("#test").click(function(){
11                     $.ajax({
12                         url:"jsonTest.action",
13                         type:"post",
14                         dataType:"json",
15                         success:function(data){
16                             alert(data.name);
17                             alert(data.id);
18                         }
19                     });
20                 });
21             });
22         </script>
23         <title>JsonTest</title>
24     </head>
25     <body>
26         <input type="button" value="JsonTest" id="test"/>
27     </body>
28 </html>