test.jsp：

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

<%@ 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); %>

如{"result":0}

后台：

需要设置 ：

复制代码 代码如下:

注意：返回json格式

<script type="text/javascript" src="https://www.xp.cn/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);">submit</a>