<script type="text/javascript" src="/js/jquery-1.4.js"></script> <script type="text/javascript"> function jsonTest1() { $.ajax({ url:"Handler.ashx", data:{"type":"ajax"}, datatype:"json", type:"get", success:function(data) { document.getElementById('div1').innerHTML=data;//因为mime类型是文本 所以返回回来的是json格式的字符串 } }); } function jsonTest2() { $.getJSON( 'Handler.ashx', {'type': 'json','name':'qixuejia' }, //类型格式 function(data) { for(var i=0;i<data.length;i++) { alert(data[i]["UserId"]) } } ); } </script> <form id="form1" runat="server"> <div id="div1"> </div> <input type="button" value="jQuery.ajax()" onclick="jsonTest1()"/> <input type="button" value="jQuery.getJSON()" onclick="jsonTest2()"/> </form>

public void ProcessRequest(HttpContext context) { if (context.Request.Params["type"].Equals("ajax")) { context.Response.ContentType = "text/plain"; } else { context.Response.ContentType = "application/json"; } GetInfo(context); } public bool IsReusable { get { return false; } } public void GetInfo(HttpContext context) { System.Collections.Generic.List<UserInfo> listUser = UserInfoManage.GetUserInfoBySQL("Select Top 5 * From Userinfo"); IsoDateTimeConverter timeConverter = new IsoDateTimeConverter(); timeConverter.DateTimeFormat = "yyyy'-'MM'-'dd' 'HH':'mm':'ss"; string ResJsonStr = JsonConvert.SerializeObject(listUser, timeConverter); context.Response.Write(ResJsonStr); }