C#利用HttpWebRequest,Stream,HttpWebResponse,StreamReader获取post返回的数据

转自 https://blog.csdn.net/canonzki/article/details/52047744 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net; using System.IO; namespace TestCon { static class InfoGeter { //静态方法传递两个参数，Post_String是单纯的链接，Post_Data是post的参数用以请求 public static string Info_Geter_Post_Get(string Post_String,string Post_Data) { try { string s_Connection_String = Post_String; //实例化一个HttpWebrequst对象 HttpWebRequest Info_Request = (HttpWebRequest)WebRequest.Create(s_Connection_String); //设置Requst的模式 Info_Request.Method = "POST"; //设置Content-Type Http标头的值，该值为默认值 Info_Request.ContentType = "application/x-www-form-urlencoded"; //预设响应等待时间 Info_Request.Timeout = 20000; //建立一个Stream对象来写入Requst请求的参数流内涵url和key值等 Stream Info_Stream = Info_Request.GetRequestStream(); //调用Write方法第一个参数是获取传递参数的值得类型，第二个是流起始位置，第三个参数指流的长度 Info_Stream.Write(Encoding.UTF8.GetBytes(Post_Data), 0, Encoding.UTF8.GetBytes(Post_Data).Length); //实例化一个HttpWebResponse用GetResponse方法用以获取服务器返回的响应 HttpWebResponse Info_Response = (HttpWebResponse)Info_Request.GetResponse(); //实例化一个StreamReader对象来获取Response的GetResponseStream返回的响应的体 StreamReader Info_Reader = new StreamReader(Info_Response.GetResponseStream(), Encoding.UTF8); return Info_Reader.ReadToEnd()+""; } catch (System.Exception ex) { Console.WriteLine(ex); Console.ReadLine(); return ""; } } } }