struts2.0 + ajax + xml (附源码)

struts2.0 + ajax + xml (附源码)

程序更新：1、添加了对页面显示数据量的控制。
               2、添加了删除数据后，动态刷新表数据功能。

源码下载：  test.rar

更新文件：1、index.jsp 
               2、UserAction.java

注意事项：1、由于加包后文件太大，源码中没有struts2.0 相关jar包。
               2、该程序没有用到数据库，加入jar包后直接在web容器上运行即可。
               3、如果需要完整的源码，请留言你的邮箱，或者联系QQ：303225497。

更新代码：

           index.jsp

           

<% @ page language="java" pageEncoding="UTF-8" %>

<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" >
< html >
     < head >
         < title > test javascript </ title >
     </ head >
     < script  defer ="defer" >
    
        //XMLHTTP对象
        var xmlHttp;    
        //删除数据所在的行id   
        var deleteRowId;   
        
        /**//**
         * 发送请求、调用回调方法
         *
         * @param url: 请求的URL    
         *        afterMothod：请求返回时所调用的方法名称(回调方法)
         *
         */
        function showHint(url,afterMothod) {
            try{
                xmlHttp = GetXmlHttpObject(afterMothod);
                xmlHttp.open("GET",url,false);
                xmlHttp.send(null);
            }catch(e){
                alert(e);
            }
        }
        
        /**//**
         * 根据浏览器创建XmlHttp对象
         *
         * @param handler：请求返回时所调用的方法名称(回调方法)    
         *       
         */
        function GetXmlHttpObject(handler) {
            var objXmlHttp = null;
            if (navigator.userAgent.indexOf("Opera") >= 0) {
                alert("This example doesn't work in Opera");
                return;
            }
            if (navigator.userAgent.indexOf("MSIE") >= 0) {
                var strName = "Msxml2.XMLHTTP";
                if (navigator.appVersion.indexOf("MSIE 5.5") >= 0) {
                    strName = "Microsoft.XMLHTTP";
                }
                try {
                    objXmlHttp = new ActiveXObject(strName);
                    objXmlHttp.onreadystatechange = handler;
                    return objXmlHttp;
                }
                catch (e) {
                    alert("Error. Scripting for ActiveX might be disabled");
                    return;
                }
            }
            if (navigator.userAgent.indexOf("Mozilla") >= 0) {
                objXmlHttp = new XMLHttpRequest();
                objXmlHttp.onload = handler;
                objXmlHttp.onerror = handler;
                return objXmlHttp;
            }
        }
        
        /**//**
         * 请求返回是调用的回调方法
         * 服务器段返回 user 信息以xml形式发送到客户断  
         * 解析 xml 数据，把数据展现给用户
         *    
         */
        function flush() {
            try{
                if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
                    
                    //得到返回过来的XML对象，进行数据处理
                    var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
                    xmlDoc.async=false;
                    xmlDoc.loadXML(xmlHttp.responseText)  
                
                    //返回错误代码,适合用于测试。
                    //var error = xmlDoc.parseError.errorCode;
                    //alert(error?xmlDoc.parseError.reason:"XML格式正确");
                    
                    //解析XML数据，将数据刷新到userTable中
                    var users=xmlDoc.getElementsByTagName("user");
                    //插入数据前，先清空数据
                    clearTable(userTable);
                    for(var i=0;i<users.length;i++){
                        //插入行
                        var userRow=userTable.insertRow();
                        //得到行标示
                        var rowId=userRow.rowIndex;      
                        
                        //取到一个user对象
                        var user=users[i];                
                        
                        //插入序号列
                        var userNum=userRow.insertCell();
                        userNum.innerHTML = "<font size=4 color=5adf83><b>"+(i+1)+"</b></font>"; 
                        
                        //插入userid列
                        var userId=userRow.insertCell(); 
                        //显示userid  
                        userId.innerHTML = user.getAttribute("userId");
                        
                        var userName=userRow.insertCell();
                        userName.innerHTML=user.getAttribute("userName");
                        
                        var userTel=userRow.insertCell();
                        userTel.innerHTML=user.getAttribute("userTel");
                        
                        var userOp=userRow.insertCell();
                        //生成删除user的url                    
                        var deleteUserURl="user!delete.action?userNumber="+getPageUserNumber()+"&user.userId="+user.getAttribute("userId");
                        userOp.innerHTML="<a href=javascript:showHint('"+deleteUserURl+"',drop);>删除</a>";
                    }
                }
            }catch(e){
                alert(e.description);
            }
        }
        
        /**//**
         * 请求返回是调用的回调方法
         * 删除 user对象 服务器段返回删除后的操作信息和 user 列表数据  
         * 客户端将信息和数据展现给用户
         *    
         */
        function drop(){
            
            if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
                var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
                xmlDoc.async=false;
                xmlDoc.loadXML(xmlHttp.responseText);
                var msg=xmlDoc.getElementsByTagName("msg")[0];
                
                if(msg.getAttribute("isSuccess")=="false"){
                    alert(msg.getAttribute("msgString"));
                }else{
                    alert(msg.getAttribute("msgString"));
                    flush();//删除成功后，刷新数据。
                }
            }
        }
        
        /**//**
         * 清空数据表的数据 
         *
         * @param opTable：所要清空的表对象    
         *       
         */
        function clearTable(opTable){
            
            var size=opTable.rows.length;
            for(var i=2;i<size;i++){
                opTable.deleteRow(2);
            }
        }
        
        /**//**
         * 得到一页显示数据的个数    
         *       
         */
        function getPageUserNumber(){
            return size.value;
        }
        
        /**//**
         * 动态的根据用户选择的显示数进行动态返回刷新操作的URL
         *       
         */
        function getFlushUserURl(){
            return "user!list.action"+"?userNumber="+getPageUserNumber();
        }
     </ script >
     < body >
         < center >
             < h3 >  
                用户列表 
             </ h3 >
             < br >
             < table  id ="userTable"  title ="用户列表"  width ="60%" >
                 < tbody  align ="center" >
                     < tr  bgcolor ="#54821f" >
                         < th  width ="5%" >
                            序号
                         </ th >
                         < th  width ="15%" >
                            用户ID
                         </ th >
                         < th  width ="15%" >
                            姓名
                         </ th >
                         < th  width ="15%" >
                            电话
                         </ th >
                         < th  width ="5%" >
                            操作
                         </ th >
                     < tr >
                 </ tbody >
             </ table >
             < br >
             < br >
             < br >
             < button  onclick ="showHint(getFlushUserURl(),flush);" >
                刷新
             </ button > &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            
             < font  size ="2"  color ="blue" >< b > 显示用户数： </ b ></ font >
             < select  id ="size"  name ="userSize" >
                 < option  value ="3"  selected > 3 </ option >
                 < option  value ="5" > 5 </ option >
                 < option  value ="10" > 10 </ option >
                 < option  value ="15" > 15 </ option >
                 < option  value ="20" > 20 </ option >
             </ select >
         </ center >
     </ body >
</ html >

           UserAction.java

            

package  com.wen.test;

import  java.util.List;
import  java.util.Random;
import  java.util.Vector;


import  com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings( " serial " )
public   class  UserAction  extends  ActionSupport  {

    private User user;

    private int userNumber;

    private List<User> userList;

    private List<String> msgList;

    public String delete() {

        String id = user.getUserId();
        msgList = new Vector<String>();

        // 当userId第5为是4的时候删除失败
        if (id.charAt(4) == '4') {
            msgList.add("false");
            msgList.add("删除ID为：" + id + "用户失败！！");
        } else {
            // 删除成功，做删除操作
            msgList.add("true");
            msgList.add("删除ID为：" + id + "用户成功！！");
        }
        return list();
    }

    public String list() {

        userList = new Vector<User>();

        // 如果得不到usernuNmber,初始化为3。
        userNumber = userNumber == 0 ? 3 : userNumber;

        // 随即得到 user 对象
        for (int i = 0; i < userNumber; i++) {
            user = new User();
            user.setUserId("" + new Random().nextInt());
            user.setUserName("name" + new Random().nextInt());
            user.setUserTel("pass" + new Random().nextInt());
            userList.add(user);
        }
        return SUCCESS;
    }
    
    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    public List getMsgList() {
        return msgList;
    }

    public List getUserList() {
        return userList;
    }

    public void setUserNumber(int userNumber) {
        this.userNumber = userNumber;
    }
}