jsonObject 转化 bean list map array

ssxxjjii · 发表于 2013-1-23 01:44:31

package com.json;          public class User {       String username;       String password;       public String getUsername() {             return username;       }       public void setUsername(String username) {             this.username = username;       }       public String getPassword() {             return password;       }       public void setPassword(String password) {             this.password = password;       }             }
package com.json;          import java.io.IOException;    import java.io.PrintWriter;    import java.util.ArrayList;    import java.util.List;          import javax.servlet.ServletException;    import javax.servlet.http.HttpServlet;    import javax.servlet.http.HttpServletRequest;    import javax.servlet.http.HttpServletResponse;          import net.sf.json.JSONArray;          public class TestJson extends HttpServlet {             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/html");          String str= request.getParameter("name");//得到ajax传递过来的paramater             System.out.print(str);             PrintWriter out = response.getWriter();             List list = new ArrayList();//传递List                      Map m=new HashMap();//传递Map                User u1=new User();             u1.setUsername("zah");             u1.setPassword("123");             User u2=new User();             u2.setUsername("ztf");             u2.setPassword("456");             list.add(u1); //添加User对象                   list.add(u2);    //添加User对象                            m.put("u1", u1);             m.put("u2", u2);                JSONArray jsonArray2 = JSONArray.fromObject( list );          //把java数组转化成转化成json对象       JSONObject jo=JSONObject.fromObject(m);//转化Map对象             out.print(jsonArray2);//返给ajax请求          out.print(jo);//返给ajax请求       }    }
<script type="text/javascript" src="js/jquery.js"></script>    <script type="text/javascript">          function test(){             $.ajax({                      type:"POST", //请求方式                   url:"testjson", //请求路径                   cache: false,                      data:"name=zah",  //传参                   dataType: 'json', //返回值类型                   success:function(json){                               alert(json[0].username+" " json[0].password); //弹出返回过来的List对象                      }                   });          }    </script>       </head>       <body>       <input type="button" name="b" value="测试" onclick=test()>       </body>

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