c#如何带Cookies进行http的Post和Get访问

1、打开vs,新建项目引用:using System.Net.Http;using System.Net;

3、public static string HttpPost(string url, string postdata, string cookies) { HttpWebRequest request = null; HttpWebResponse response = null; try { request = (HttpWebRequest)WebRequest.Create(url); request.Method = "POST"; byte[] data = Encoding.UTF8.GetBytes(postdata); request.ContentType = "application/x-www-form-urlencoded"; request.ServicePoint.ConnectionLimit = 3000; request.UserAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.83 Safari/535.11"; request.ContentLength = data.Length; request.Headers.Add("cookie",cookies); Stream newStream = request.GetRequestStream(); newStream.Write(data, 0, data.Length); newStream.Close(); response = (HttpWebResponse)request.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default); string result = reader.ReadToEnd(); reader.Close(); request.Abort(); response.Close(); return result; } catch (Exception ex) { if (request != null) request.Abort(); if (response != null) response.Close(); return string.Empty; } }

4、下面是get的代码 private string HttpGetData(string url,string cookies) { HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url); myRequest.Headers.Add("cookie", cookies); myRequest.Method = "GET"; HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse(); StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8); string content = reader.ReadToEnd(); reader.Close(); return content; }