jquery的ajax方式调用json简单例子

前台：

<script type="text/javascript" src="jquery-1.5.1.min.js"></script>
<script type="text/javascript">
        //test
 function test(uid)
 {

   if(confirm("确定该用户操作"+uid+"吗？"))
   {
    var date = new Date();
    var param = {uid:uid};
    jQuery.get("test.jsp?para=" + date, param,
       function(data){
         if(data != null)
         {
       var result = data.result;
       //alert("data==="+data);
       if(result == 1)
       {
        alert("操作失败");
       }
       if(result == 0)
       {
        alert("操作失败。");
        //document.location.href = document.location;
        //window.location.reload();
        
       }
         }
    });
   }

 }
</script>

<a href="javascript:void(0);" onclick="test(111111111111111111);">submit</a>

 

 

 

后台：

test.jsp 

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%
response.setContentType("application/x-json;charset=UTF-8");
String uid=request.getParameter("uid");
int ret=0;
String result = "{\"result\":" + ret + "}";
out.print(result);
%>

注意：返回json格式

如{"result":0}

需要设置 ：response.setContentType("application/x-json;charset=UTF-8");