strust 2.18 应用json 学习
1. ?struts2 必需包.
2.
json-lib-2.2-jdk15.jar
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commons-beanutils.jar，
commons-lang.jar，
ezmorph.jar，
struts2-json.jar
这些包在strust2.18中都有.
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实例：界面
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<%@ page language="java" ?pageEncoding="GBK"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
??<head>
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?? ?<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0"> ? ?
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="js/json2.js"></script>
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript">
??$(function(){
??$("#login").click(function(){
??login();
??
??});
??
??})
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??function login(){
??var url="user_login.action";
??var name=$("#name").attr("value");
??var password=$("#password").attr("value");
??var params={"user.name":name,"user.password":password};
??
??$.getJSON(url,params,function callback(data){
??var user=eval("("+data+")");
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??$("#result").each(function(){
??$(this).html('welcome ,'+user.name);
??});
??});
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??}
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?</script>
??</head>
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??<body> ?
?? ?This is my JSP page. <br>
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?? ?<s:actionmessage/>
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?? ?<form action="" id ="form">
?? ?用户名:
?? ?<input type="text" name="user.name" id="name">
?? ?<br>
?? ?密码：
?? ?<input type="password" name="user.password" id="password"/>
?? ?<br>
<input type="button" id="login" value="登录" />
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?? ?</form>
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?? ?<div id="result"></div>
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??</body>
</html>
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action ? ?代码
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package com.tzp;import java.util.HashMap;import java.util.Map;import net.sf.json.JSONObject;import com.opensymphony.xwork2.ActionSupport;public class UserAction extends ActionSupport {/** * */private static final long serialVersionUID = -6412115797195077412L;private User user;private String result;public String getResult() {return result;}public void setResult(String result) {this.result = result;}public User getUser() {return user;}public void setUser(User user) {this.user = user;}public String login() throws Exception{Map map=new HashMap();if(user!=null){map.put("name", user.getName());map.put("password",user.getPassword());System.out.println(map.get("name").toString());JSONObject obj=JSONObject.fromObject(map);result=obj.toString();}else{result="";}System.out.println(result);return SUCCESS;}}?
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struts 配置
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<!DOCTYPE struts PUBLIC