HTTP请求工具类

　　HTTP请求工具类，适用于微信服务器请求，可以自测

代码;

 /// <summary>
     /// HTTP请求工具类
     /// </summary>
     public class HttpRequestUtil
     {
         #region 请求Url

         #region 请求Url，不发送数据
         /// <summary>
         /// 请求Url，不发送数据
         /// </summary>
         public static string RequestUrl(string url)
         {
             return RequestUrl(url, "POST");
         }
         #endregion

         #region 请求Url，不发送数据
         /// <summary>
         /// 请求Url，不发送数据
         /// </summary>
         public static string RequestUrl(string url, string method)
         {
             // 设置参数
             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
             CookieContainer cookieContainer = new CookieContainer();
             request.CookieContainer = cookieContainer;
             request.AllowAutoRedirect = true;
             request.Method = method;
             request.ContentType = "text/html";
             request.Headers.Add("charset", "utf-8");

             //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 responseStream = response.GetResponseStream();
             StreamReader sr = new StreamReader(responseStream, Encoding.UTF8);
             //返回结果网页（html）代码
             string content = sr.ReadToEnd();
             return content;
         }
         #endregion

         #region 请求Url，发送数据
         /// <summary>
         /// 请求Url，发送数据
         /// </summary>
         public static string PostUrl(string url, string postData)
         {
             byte[] data = Encoding.UTF8.GetBytes(postData);

             // 设置参数
             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
             CookieContainer cookieContainer = new CookieContainer();
             request.CookieContainer = cookieContainer;
             request.AllowAutoRedirect = true;
             request.Method = "POST";
             request.ContentType = "application/x-www-form-urlencoded";
             request.ContentLength = data.Length;
             Stream outstream = request.GetRequestStream();
             outstream.Write(data, , data.Length);
             outstream.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

         #endregion

         #region Http下载文件
         /// <summary>
         /// Http下载文件
         /// </summary>
         public static string HttpDownloadFile(string url, string path)
         {
             // 设置参数
             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

             //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 responseStream = response.GetResponseStream();

             //创建本地文件写入流
             Stream stream = new FileStream(path, FileMode.Create);

             byte[] bArr = new byte[];
             int size = responseStream.Read(bArr, , (int)bArr.Length);
             while (size > )
             {
                 stream.Write(bArr, , size);
                 size = responseStream.Read(bArr, , (int)bArr.Length);
             }
             stream.Close();
             responseStream.Close();
             return path;
         }
         #endregion

         #region Http上传文件
         /// <summary>
         /// Http上传文件
         /// </summary>
         public static string HttpUploadFile(string url, string path)
         {
             // 设置参数
             HttpWebRequest request = WebRequest.Create(url) 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 + );

             //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, , bArr.Length);
             fs.Close();

             Stream postStream = request.GetRequestStream();
             postStream.Write(itemBoundaryBytes, , itemBoundaryBytes.Length);
             postStream.Write(postHeaderBytes, , postHeaderBytes.Length);
             postStream.Write(bArr, , bArr.Length);
             postStream.Write(endBoundaryBytes, , 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

     }

有什么问题可以随时沟通