c#--发起一个http请求

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using System.Collections.Generic;using System.Linq;using System.Text;using System.Net;using System.IO;using System; namespace KL.EDMS.Business.Report{    public class FaultCountLogic    {        //注：本次请求为向androidpnserver发送请求实现后台向客户端的消息推送        public string SentHttpRequest()        {             //请求路径            string url = "http://localhost:7070/notification.do";                         //定义request并设置request的路径            WebRequest request = WebRequest.Create(url);                         //定义请求的方式            request.Method = "POST";                         //初始化request参数            string postData = "action=send&broadcast=Y&uri=112332&username=f8df247d0b2b4277b122f68c94c2caab";            postData +="&title=C#发送后台请求";            postData += "&message=利用C#后台向androidpnserver发送HTTP请求实现客户端的消息推送功能。";                         //设置参数的编码格式，解决中文乱码            byte[] byteArray = Encoding.UTF8.GetBytes(postData);                         //设置request的MIME类型及内容长度            request.ContentType = "application/x-www-form-urlencoded";            request.ContentLength = byteArray.Length;                         //打开request字符流            Stream dataStream = request.GetRequestStream();            dataStream.Write(byteArray, 0, byteArray.Length);            dataStream.Close();                         //定义response为前面的request响应            WebResponse response = request.GetResponse();                         //获取相应的状态代码            Console.WriteLine(((HttpWebResponse)response).StatusDescription);                         //定义response字符流            dataStream = response.GetResponseStream();            StreamReader reader = new StreamReader(dataStream);            string responseFromServer = reader.ReadToEnd();//读取所有            Console.WriteLine(responseFromServer);                         //关闭资源            reader.Close();            dataStream.Close();            response.Close();             return responseFromServer;        }    }}
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