HTTP請求工具類

　　HTTP請求工具類，適用於微信伺服器請求，可以自測

代碼;

  1 /// <summary>
  2     /// HTTP請求工具類
  3     /// </summary>
  4     public class HttpRequestUtil
  5     {
  6         #region 請求Url
  7 
  8         #region 請求Url，不發送數據
  9         /// <summary>
 10         /// 請求Url，不發送數據
 11         /// </summary>
 12         public static string RequestUrl(string url)
 13         {
 14             return RequestUrl(url, "POST");
 15         }
 16         #endregion
 17 
 18         #region 請求Url，不發送數據
 19         /// <summary>
 20         /// 請求Url，不發送數據
 21         /// </summary>
 22         public static string RequestUrl(string url, string method)
 23         {
 24             // 設置參數
 25             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
 26             CookieContainer cookieContainer = new CookieContainer();
 27             request.CookieContainer = cookieContainer;
 28             request.AllowAutoRedirect = true;
 29             request.Method = method;
 30             request.ContentType = "text/html";
 31             request.Headers.Add("charset", "utf-8");
 32 
 33             //發送請求並獲取相應回應數據
 34             HttpWebResponse response = request.GetResponse() as HttpWebResponse;
 35             //直到request.GetResponse()程式才開始向目標網頁發送Post請求
 36             Stream responseStream = response.GetResponseStream();
 37             StreamReader sr = new StreamReader(responseStream, Encoding.UTF8);
 38             //返回結果網頁（html）代碼
 39             string content = sr.ReadToEnd();
 40             return content;
 41         }
 42         #endregion
 43 
 44         #region 請求Url，發送數據
 45         /// <summary>
 46         /// 請求Url，發送數據
 47         /// </summary>
 48         public static string PostUrl(string url, string postData)
 49         {
 50             byte[] data = Encoding.UTF8.GetBytes(postData);
 51 
 52             // 設置參數
 53             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
 54             CookieContainer cookieContainer = new CookieContainer();
 55             request.CookieContainer = cookieContainer;
 56             request.AllowAutoRedirect = true;
 57             request.Method = "POST";
 58             request.ContentType = "application/x-www-form-urlencoded";
 59             request.ContentLength = data.Length;
 60             Stream outstream = request.GetRequestStream();
 61             outstream.Write(data, 0, data.Length);
 62             outstream.Close();
 63 
 64             //發送請求並獲取相應回應數據
 65             HttpWebResponse response = request.GetResponse() as HttpWebResponse;
 66             //直到request.GetResponse()程式才開始向目標網頁發送Post請求
 67             Stream instream = response.GetResponseStream();
 68             StreamReader sr = new StreamReader(instream, Encoding.UTF8);
 69             //返回結果網頁（html）代碼
 70             string content = sr.ReadToEnd();
 71             return content;
 72         }
 73         #endregion
 74 
 75         #endregion
 76 
 77         #region Http下載文件
 78         /// <summary>
 79         /// Http下載文件
 80         /// </summary>
 81         public static string HttpDownloadFile(string url, string path)
 82         {
 83             // 設置參數
 84             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
 85 
 86             //發送請求並獲取相應回應數據
 87             HttpWebResponse response = request.GetResponse() as HttpWebResponse;
 88             //直到request.GetResponse()程式才開始向目標網頁發送Post請求
 89             Stream responseStream = response.GetResponseStream();
 90 
 91             //創建本地文件寫入流
 92             Stream stream = new FileStream(path, FileMode.Create);
 93 
 94             byte[] bArr = new byte[1024];
 95             int size = responseStream.Read(bArr, 0, (int)bArr.Length);
 96             while (size > 0)
 97             {
 98                 stream.Write(bArr, 0, size);
 99                 size = responseStream.Read(bArr, 0, (int)bArr.Length);
100             }
101             stream.Close();
102             responseStream.Close();
103             return path;
104         }
105         #endregion
106 
107         #region Http上傳文件
108         /// <summary>
109         /// Http上傳文件
110         /// </summary>
111         public static string HttpUploadFile(string url, string path)
112         {
113             // 設置參數
114             HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
115             CookieContainer cookieContainer = new CookieContainer();
116             request.CookieContainer = cookieContainer;
117             request.AllowAutoRedirect = true;
118             request.Method = "POST";
119             string boundary = DateTime.Now.Ticks.ToString("X"); // 隨機分隔線
120             request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
121             byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
122             byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
123 
124             int pos = path.LastIndexOf("\\");
125             string fileName = path.Substring(pos + 1);
126 
127             //請求頭部信息 
128             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));
129             byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
130 
131             FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
132             byte[] bArr = new byte[fs.Length];
133             fs.Read(bArr, 0, bArr.Length);
134             fs.Close();
135 
136             Stream postStream = request.GetRequestStream();
137             postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
138             postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
139             postStream.Write(bArr, 0, bArr.Length);
140             postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
141             postStream.Close();
142 
143             //發送請求並獲取相應回應數據
144             HttpWebResponse response = request.GetResponse() as HttpWebResponse;
145             //直到request.GetResponse()程式才開始向目標網頁發送Post請求
146             Stream instream = response.GetResponseStream();
147             StreamReader sr = new StreamReader(instream, Encoding.UTF8);
148             //返回結果網頁（html）代碼
149             string content = sr.ReadToEnd();
150             return content;
151         }
152         #endregion
153 
154     }

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