struts2中Jquery的json使用(最简单的例子)

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s"  %><!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-1.8.3.js"></script><script type="text/javascript" src="js/struts2JquerySelect.js"></script>  </head>    <body> <s:select list="#{'zhangsan':'zhangsan', 'lisi':'lisi' }" id="selName" ></s:select><input type="button" id="sub" value="查询" />  </body></html>

//获取元素的文本信息一定要用val()方法.//第一种方式：$.post()方式.$(function(){$("button").click(function(){$.post("selInfo", {name:$("#selName").val()}, function(returnData,status){if("success" == status){alert("ID:"+ returnData.id +"name:"+ returnData.name +"adress:"+ returnData.address);}})})})//第二种方式：$.ajax({}) 方法传的是一个类似于json对象形式的的键值对.//所以用的{ type:"", url:"", data:"", }/*$(function(){var selName=$("#selName").val();$("#sub").click(function(){$.ajax({  //以post方式提交.type:"post",    //提交的地址.url:"selInfo",   //提交的数据以json的键值对方式.多个参数可以date:{ name:selName, age:myAge } .//也可以以字符串方式 data:"name=selName"多个参数可以"name=selName&age=myAge"data:{name:selName},//类似于回调函数：由于struts2的插件已经将实体对象在内部自动转换成了json对象.//所以成功返回时得到一个json对象覆给returnData.success:function(returnData)    {alert("ID:"+ returnData.id +"name:"+ returnData.name +"adress:"+ returnData.address);}});});});*/

<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd"><struts><!-- 用到json插件的时候并且result的type属性的值为json时候,需要用到struts2-json-plugin-2.3.14.jar这个jar包.并且需要继承json-default --><package name="default" extends="struts-default,json-default"><action name="selInfo" class="org.struts.action.struts2JquerySelect"><result type="json" /></action></package></struts>

package org.struts.model;public class Users {private int id;private String name;private String address;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}}

package org.struts.action;import org.struts.model.Users;public class struts2JquerySelect {private int id;private String address;private String name;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String execute(){Users users1=new Users();users1.setId(1);users1.setName("夏");users1.setAddress("北京");System.out.println("--------------------------");Users users2=new Users();users2.setId(1);users2.setName("夏");users2.setAddress("北京");if("zhangsan".equals(name)){this.id=users1.getId();this.name=users1.getName();this.address=users1.getAddress();}else if("lisi".equals(name)){this.id=users2.getId();this.name=users2.getName();this.address=users2.getAddress();}return "success";}}