strust 2.18 应用json 学习
1. struts2 必需包.
2.
json-lib-2.2-jdk15.jar
commons-beanutils.jar，
commons- lang.jar，
ezmorph.jar，
struts2-json.jar
这些包在strust2.18中都有.
实例：界面
<%@ page language="java" pageEncoding="GBK"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<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(){
$("#login").click(function(){
login();
});
})
function login(){
var url="user_login.action";
var name=$("#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+")");
$("#result").each(function(){
$(this).html('welcome ,'+user.name);
});
});
}
</script>
</head>
<body>
This is my JSP page. <br>
<s:actionmessage/>
<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" />
</form>
<div id="result"></div>
</body>
</html>
action 代码
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;
}
}
struts 配置
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="tzp" extends="json-default">
<action name="user_*" class="com.tzp.UserAction" method="{1}">
<result type="json">
<param name="root">result</param>
</result>
</action>
</package>
</struts>