struts2+json+jquery

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利用struts2+json+jquery 实现数据的存取。

所需jar包：

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Struts2+JQuery+JSON</title><script type="text/javascript" src="js/jquery.js"></script><script type="text/javascript" src="js/json.js"></script></head><body>  <input id="getMessage" type="button" value="获取单个值"/>      <input id="getUserInfo" type="button" value="获取UserInfo对象"/>      <input id="getList" type="button" value="获取List对象"/>      <input id="getMap" type="button" value="获取Map对象"/>      <br>    <br>    <br>    <!-- 要显示信息的层 -->    <div id="message"></div>    <form>    用户ID：<input name="userInfo.uid" type="text"/><br/>    用户名：<input name="userInfo.uname" type="text"/><br/>    年   纪：<input name="userInfo.age" type="text"/><br>    <input id="regRe" type="button" value="注册"/>    </form></body></html>

js文件:json.js

package com.test.vo;

import java.io.Serializable;

public class UsersInfo implements Serializable {

private static final long serialVersionUID = -4618501904271551291L;

private int uid;
private String uname;
private int age;
public int getUid() {
  return uid;
}
public void setUid(int uid) {
  this.uid = uid;
}
public String getUname() {
  return uname;
}
public void setUname(String uname) {
  this.uname = uname;
}
public int getAge() {
  return age;
}
public void setAge(int age) {
  this.age = age;
}

}

action类:

package com.test.action;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import com.test.vo.UsersInfo;import com.opensymphony.xwork2.ActionSupport;public class JsonStrutsJqueryAction extends ActionSupport {private static final long serialVersionUID = -4618501904271551291L;private UsersInfo userInfo; // 使用json返回对象private String messages; // 使用json返回单个值private List<UsersInfo> listUserInfo; // 使用json返回list对象private Map maps; // 使用json返回map对象public Map getMaps() {return maps;}public void setMaps(Map maps) {this.maps = maps;}public UsersInfo getUserInfo() {return userInfo;}public void setUserInfo(UsersInfo userInfo) {this.userInfo = userInfo;}public String getMessages() {return messages;}public void setMessages(String messages) {this.messages = messages;}public List<UsersInfo> getListUserInfo() {return listUserInfo;}public void setListUserInfo(List<UsersInfo> listUserInfo) {this.listUserInfo = listUserInfo;}/** * <p>返回单个值</p> * @return * @throws Exception */public String returnMessage() throws Exception{this.messages="成功返回单个值";return "message";}/** * <p>返回用户信息对象</p> * @return * @throws Exception */public String returnUsersInfo() throws Exception{userInfo=new UsersInfo();userInfo.setUid(55555);userInfo.setUname("MINISIDSC");userInfo.setAge(24);return "usersInfo";}/** * <p>返回list对象</p> * @return * @throws Exception */public String returnListUserInfo() throws Exception{listUserInfo=new ArrayList<UsersInfo>();UsersInfo u1=new UsersInfo();u1.setUid(8888);u1.setUname("MINISIDSC");u1.setAge(24);UsersInfo u2=new UsersInfo();u2.setUid(6666);u2.setUname("张三");u2.setAge(24);UsersInfo u3=new UsersInfo();u3.setUid(99999);u3.setUname("李四");u3.setAge(24);UsersInfo u4=new UsersInfo();u4.setUid(1111);u4.setUname("王麻子");u4.setAge(24);listUserInfo.add(u1);listUserInfo.add(u2);listUserInfo.add(u3);listUserInfo.add(u4);return "listUserInfo";}/** * 返回map对象 * @return * @throws Exception */public String returnMaps() throws Exception{maps = new HashMap<String,UsersInfo>();UsersInfo u1=new UsersInfo();u1.setUid(8888);u1.setUname("MINISIDSC");u1.setAge(24);UsersInfo u2=new UsersInfo();u2.setUid(6666);u2.setUname("张三");u2.setAge(24);UsersInfo u3=new UsersInfo();u3.setUid(99999);u3.setUname("李四");u3.setAge(24);UsersInfo u4=new UsersInfo();u4.setUid(1111);u4.setUname("王麻子");u4.setAge(24);maps.put(u1.getUid()+"", u1);maps.put(u2.getUid()+"", u2);maps.put(u3.getUid()+"", u3);maps.put(u4.getUid()+"", u4);return "maps";}/** * <p> * 获得对象，也就是通过表达获得对象(异步的) * </P> * @return */public String gainUserInfo(){System.out.println("用户uid："+userInfo.getUid());System.out.println("用户名："+userInfo.getUname());System.out.println("年龄："+userInfo.getAge());return "reg";}}

struts.xml

<?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><package name="jsont" extends="json-default" namespace="/"><action name="jsonTest" class="com.huawei.action.JsonStrutsJqueryAction">    <!-- 返回单个值的result -->    <result name="message" type="json"></result>    <!-- 返回UserInfo对象的 -->    <result name="usersInfo" type="json"></result>    <!-- 返回List对象的 -->    <result name="listUserInfo" type="json"></result>    <!-- 返回Map对象的 -->    <result name="maps" type="json"></result>    <!-- 提交ajax数据 -->    <result name="reg" type="json"></result></action></package></struts>

实体类:

package com.test.vo;

import java.io.Serializable;

}