1 @Controller
 2 public class MyController {
 3    //处理器方法
 4     @RequestMapping(value="http://www.mamicode.com/first.do",produces="text/html;charset=utf-8")
 5     public void doFirst(HttpServletResponse response) throws IOException{
 6         //伪造数据
 7         
 8         Map<String, UserInfo> map=new HashMap<String,UserInfo>();
 9         UserInfo u1=new UserInfo();
10         u1.setAge(12);
11         u1.setName("恭喜就业");
12         
13         UserInfo u2=new UserInfo();
14         u2.setAge(122);
15         u2.setName("顺利就业");
16         
17         map.put("001",u1);
18         map.put("002",u2);
19         
20         //工具   map----json字符串    fastjson
21         String jsonString = JSON.toJSONString(map);
22         response.setCharacterEncoding("utf-8");
23         //响应流
24         response.getWriter().write(jsonString);
25         response.getWriter().close();
26         
27     }
28       
29     
30 }

1  $.ajax({
2                url:"first.do",
3                success:function(data){ //data指的是从server打印到浏览器的数据
4                    //jsonString jsonObject
5                    //{"001":{"age":122,"name":"顺利就业"}}
6                   var result= eval("("+data+")");
7                   
8                }
9              });