MVC跨域访问ashx接口

简介

对于webservice接口跨越访问有前端已有相关解决方案：比如：ajax使用jsonp 或者用专门的jquery.jsonp.js来进行访问。
此处介绍如何通过后台访问接口，然后将返回值提供给前台，此处以MVC编写为例

后台Control中编写

//url是要访问的服务接口地址 public string queryRespose(string url)        {            string json;            try            {                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);                request.Timeout = 15000;                request.Method = "GET";                request.ContentType = "application/x-www-form-urlencoded";                HttpWebResponse response = (HttpWebResponse)request.GetResponse();                System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream(), Encoding.UTF8);                json = reader.ReadToEnd();                reader.Close();            }            catch (Exception ex) { json = ex.Message; }            return json;        }

前端页面调用

$.ajax({    type: "GET",        url: "/ControlName/queryRespose",        dataType: "json",        async: false,        data: {        url: url    },        beforeSend: function () {    },        success: lang.hitch(this, function (msg) {        //dosomething    }),        error: function () {            console.log("error");    }});