针对HTTPS的请求我们需要额外处理一下证书，废话不多少直接代码贴给大家！
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; using System.Web; using System.Security.Cryptography.X509Certificates; using System.Net.Security; namespace WSDMagazine { /// <summary> /// 该类主要是处理网络请求 /// </summary> public class ApplicationUtil { /// <summary> /// 该方法主要是处理POST请求,返回处理返回的结果字符串 /// </summary> /// <param name="posturl">请求的接口链接</param> /// <param name="postdata">请求的数据</param> /// <returns>返回的结果</returns> /// #region 该方法主要是处理POST请求,返回处理的结果字符串 public string DealPost(string posturl, string postdata) { string responseString = "";//post返回的结果 ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(posturl); req.Method = "POST"; req.Headers["Cookie"] = "usersession=67d2da2c9f17e5e189fb1bf334fc6e36"; byte[] postBytes = Encoding.UTF8.GetBytes(postdata); req.ContentType = "application/json; charset=utf-8"; req.ContentLength = Encoding.UTF8.GetByteCount(postdata);//strJson为json字符串 Stream stream = req.GetRequestStream(); stream.Write(postBytes, 0, postBytes.Length); req.Timeout = 90000; stream.Close(); var response = req.GetResponse(); Stream streamResponse = response.GetResponseStream(); StreamReader streamRead = new StreamReader(streamResponse); responseString = streamRead.ReadToEnd(); response.Close(); streamRead.Close(); return responseString; } #endregion #region 信任https请求证书 private static bool RemoteCertificateValidate( object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors error) { System.Console.WriteLine("Warning, trust any certificate"); return true; } #endregion #region 该方法主要是处理Get请求,返回处理的结果字符串 public string DealGet(string url) { //设置安全的类型 ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url); myRequest.Method = "GET"; HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse(); StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8); string content = reader.ReadToEnd(); reader.Close(); return content; } #endregion #region 自定义一个方法实现Http上传 public string UploadByHttp(string posturl, string path) { ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpWebRequest request = WebRequest.Create(posturl) as HttpWebRequest; CookieContainer cookieContainer = new CookieContainer(); request.CookieContainer = cookieContainer; request.AllowAutoRedirect = true; request.Method = "POST"; string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线 request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary; byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n"); byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n"); int pos = path.LastIndexOf("\\"); string fileName = path.Substring(pos + 1); //请求头部信息 StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName)); byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString()); FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read); byte[] bArr = new byte[fs.Length]; fs.Read(bArr, 0, bArr.Length); fs.Close(); Stream postStream = request.GetRequestStream(); //写入照片信息 postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length); postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); postStream.Write(bArr, 0, bArr.Length); postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length); postStream.Close(); //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); return content; } #endregion } }
