servlet+ajax+json字符串后台传入，前端解析并把数据循环填入表格实例

写在前面：
1、源代码来源于博客http://blog.sina.com.cn/u/2904067371 ，在此基础上对于前端代码稍作更改，把传过来的数据解析并传入表格
2、json解析，用eval()
3、写入表格 table.rows[i].cells[j].innerHTML
4、导入java中json应用的jar包(如果没有导入jar包或者包不全就不会有import net.sf.json.JSONArray;import net.sf.json.JSONObject;
JSONArray、JSONObject会报错。
)

5、测试字符串如下：{"person":[{"id":3,"name":"ss","pwd":"1234"},{"id":23,"name":"ws","pwd":"124"}]}

json jar包百度云：

http://pan.baidu.com/s/1i3GNJ9N

工程截图：

servlet+ajax+json字符串后台传入，前端解析并把数据循环填入表格实例-LMLPHP

效果截图：
servlet+ajax+json字符串后台传入，前端解析并把数据循环填入表格实例-LMLPHP

代码：

Person.java

package com.orilore.gb;

public class Person {

    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 getPwd() {

        return pwd;

    }

    public void setPwd(String pwd) {

        this.pwd = pwd;

    }

    private int id;

    private String name;

    private String pwd;

}

servlet json.java

public void doGet(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

    doPost(request, response);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

        response.setContentType("text/xml;character=utf-8");

          response.setHeader("Cache-Control", "no-cache");

          try{

           Person p =new Person();

           p.setName("ss");

           p.setId();

           p.setPwd("");

           Person p1 =new Person();

           p1.setName("ws");

           p1.setId();

           p1.setPwd("");

           List<Person> list =new ArrayList<Person>();

           list.add(p);

           list.add(p1);

           try{

            JSONArray json =JSONArray.fromObject(list);

            JSONObject jb =new JSONObject();

            jb.put("person", json);

            response.getWriter().write(jb.toString());

           }catch(IOException e){

            e.printStackTrace();

           }

          }catch(Exception e){

           e.printStackTrace();

          }

    }

前端页面代码

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <meta http-equiv="X-UA-Compatible" content="IE=edge">

    <title></title>

    <link rel="stylesheet" href="">

</head>

<body>

  <input type="button" onclick="validate()" value="dsfdsafa" >

  <div id="div"></div>

  <table border="" style="width:300px;height:200px;" id="table">

     <tr id="tr" border=""><td></td>

         <td></td>

         <td></td></tr>

         <tr border=""><td></td>

         <td></td>

         <td></td></tr></table>

<script type="text/javascript">

     function validate(){

     var div=document.getElementById("div");

     var xmlhttp;

     var table=document.getElementById('table');

   if(window.XMLHttpRequest){

    xmlhttp=new XMLHttpRequest();

   }else{

    xmlhttp=new ActiveObject("Microsoft.XMLHTTP");

   }

   xmlhttp.onreadystatechange=function(){

    if (xmlhttp.readyState== && xmlhttp.status==){

       var x=xmlhttp.responseText

        div.innerHTML=x;

        var sd=eval("(" + x + ")");

var arr=new Array();

var i=;

    for(var a in sd.person){//获取有几个person

         var count=;//计算person属性值的个数

         i++;

        for(var item in sd.person[a])

        { count++;

          var p=sd.person[a][item];//得到属性值的内容

          table.rows[i-].cells[count-].innerHTML=p;//把内容填向table表格

        }

      }

    }

   }

   var url ="json";

   xmlhttp.open("POST",url,true);

   xmlhttp.send();

     }

</script>

  </body>

</html>