struts 和 json所用jar包
package com.jokey.action; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.jokey.bean.User; import com.opensymphony.xwork2.ActionSupport; public class UserAction extends ActionSupport { /** * */ private static final long serialVersionUID = 1L; private User user; public List<User> getUsers() { return users; } public void setUsers(List<User> users) { users = users; } //将会被Struts2序列化为JSON字符串的对象 private Map<String, Object> dataMap; private List<User> users = new ArrayList<User>(); /** * 构造方法 */ public UserAction() { //初始化Map对象 dataMap = new HashMap<String, Object>(); } /** * 测试通过action以视图方式返回JSON数据 * @return */ public String login() { if(user!=null&&user.getId().equals("jokey")&&user.getPassword().equals("123")){ dataMap.put("loginResult", "true"); }else{ dataMap.put("loginResult", "false"); } return SUCCESS; }; public String getList(){ User user1 = new User(); user1.setId("01"); user1.setName("peter"); User user2 = new User(); user2.setId("02"); user2.setName("tom"); users.add(user1); users.add(user2); return SUCCESS; } public String delUser(){ User user1 = new User(); user1.setId("01"); user1.setName("peter"); User user2 = new User(); user2.setId("02"); user2.setName("tom"); users.add(user1); users.add(user2); boolean flag = false; for (User user : users) { if(user.getId().equals(user.getId())); users.remove(user); flag = true; dataMap.put("delResult", flag); } return SUCCESS; } /** * Struts2序列化指定属性时，必须有该属性的getter方法，实际上，如果没有属性，而只有getter方法也是可以的 * @return */ public Map<String, Object> getDataMap
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.enable.DynamicMethodInvocation" value="false" /> <constant name="struts.devMode" value="true" /> <package name="default" namespace="/" extends="json-default"> <action name="login" class="com.jokey.action.UserAction" method="login"> <result type="json"> <param name="root">dataMap</param> </result> </action> <action name="getList" class="com.jokey.action.UserAction" method="getList"> <result type="json"> <param name="root">users</param> </result> </action> <action name="del" class="com.jokey.action.UserAction" method="delUser"> <result type="json"> <param name="root">dataMap</param> </result> </action> </package> </struts>
() { return dataMap; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } }
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib prefix="s" uri="/struts-tags" %> <%@ taglib prefix="json" uri="/struts-json-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"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <script type="text/javascript" src="js/jquery-1.7.1.min.js"></script> <script type="text/javascript" src="js/jquery.form.js"></script> <script type="text/javascript"> function submitForm(){ $.ajax({ type: "POST", dataType:'json', data:$('#login').serialize(),//获取表单中提交内容 自动拼装参数 //防止IE8 中文乱码 contentType: "application/x-www-form-urlencoded; charset=utf-8", url: 'login.action',//提交到的action地址 success: function(dataMap){ if(dataMap.loginResult=='true'){ alert('登陆成功'); location.href='list.jsp'; }else{ alert('登陆失败'); } } }); } </script> </head> <body> <s:form id="login" action="" theme="simple"> <s:textfield name="user.id"></s:textfield> <s:password name="user.password"></s:password> </s:form> <button onclick="submitForm()">提交</button> </body> </html>
list.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'list.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"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <script type="text/javascript" src="js/jquery-1.7.1.min.js"></script> <script> //文档加载后 自动请求数据 $(document).ready(function(){ init(); }); //初始化页面 function init(){ $.ajax({ type: "POST", dataType:'json', //防止IE8 中文乱码 contentType: "application/x-www-form-urlencoded; charset=utf-8", url: 'getList.action',//提交到的action地址 success: function(users){ var innerHtml=''; for(var i=0;i<users.length;i++){ innerHtml+='<tr><td>'+users[i].id+'</td>+<td>'+users[i].name+'</td>+<td><a href=\"javascript:void(0);\" onclick=\"delUser('+users[i].id+')\">果断删除</a></td></tr>'; } $('#userTable').html(innerHtml); } }); } function delUser(id){ $.ajax({ type: "POST", dataType:'json', data:'user.id='+id, //防止IE8 中文乱码 contentType: "application/x-www-form-urlencoded; charset=utf-8", url: 'del.action',//提交到的action地址 success: function(dataMap){ if(dataMap.delResult||dataMap.delResult=='true'){ alert('删除成功'); init(); }else{ alert('删除失败'); } } }); } </script> </head> <body> <table id="userTable" border="1px" rules="all"> </table> </body> </html>