如何從WCF REST服務調用URL

Question

我有一個需要調用URL（可能是網頁，REST服務等）的WCF REST服務並將某些值傳遞給它（類似http://xyz.com/callback?a=1&b=2）。它不需要擔心響應（只需調用並忘記）。什麼是正確的方法來做到這一點？

Answer 1

看HttpWebRequest

Answer 2

馬修所說，HttpWebRequest的是通過代碼使Web請求的理想方式。您應該使用像Fiddler這樣的工具來捕獲網站流量，然後在代碼中重建相同類型的請求。我有一個輔助類，我用它來解決這個問題，但這裏是我在發送數據和請求時使用的一部分。

public static string HttpRequest(string requestType, string contentType, string parameters, string URI, CookieContainer cookies) 
    { 
     string results = string.Empty; 

     HttpWebRequest req = (HttpWebRequest)WebRequest.Create(URI); 

     req.CookieContainer = cookies; 
     req.Method = requestType; 
     req.AllowAutoRedirect = true; 
     req.ContentLength = 0; 
     req.ContentType = contentType; 
     req.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20100101 Firefox/5.0"; 

     if (!string.IsNullOrEmpty(parameters)) 
     { 
      byte[] byteArray = Encoding.UTF8.GetBytes(parameters); 
      req.ContentLength = byteArray.Length; 
      Stream dataStream = req.GetRequestStream(); 
      dataStream.Write(byteArray, 0, byteArray.Length); 
      dataStream.Close(); 
     } 

     try 
     { 
      HttpWebResponse response = (HttpWebResponse)req.GetResponse(); 

      if (HttpStatusCode.OK == response.StatusCode) 
      { 
       Stream responseStream = response.GetResponseStream(); 

       // Content-Length header is not trustable, but makes a good hint.   
       // Responses longer than int size will throw an exception here!   
       int length = (int)response.ContentLength; 
       const int bufSizeMax = 65536; 

       // max read buffer size conserves memory   
       const int bufSizeMin = 8192; 

       // min size prevents numerous small reads   
       // Use Content-Length if between bufSizeMax and bufSizeMin   
       int bufSize = bufSizeMin; 
       if (length > bufSize) bufSize = length > bufSizeMax ? bufSizeMax : length; 

       // Allocate buffer and StringBuilder for reading response   
       byte[] buf = new byte[bufSize]; 
       StringBuilder sb = new StringBuilder(bufSize); 

       // Read response stream until end   
       while ((length = responseStream.Read(buf, 0, buf.Length)) != 0) 
        sb.Append(Encoding.UTF8.GetString(buf, 0, length)); 

       results = sb.ToString(); 
      } 
      else 
      { 
       results = "Failed Response : " + response.StatusCode; 
      } 
     } 
     catch (Exception exception) 
     { 
      Log.Error("WebHelper.HttpRequest", exception); 
     } 

     return results; 
    } 

注意：可能是其他助手的一些呼叫，但基本流程顯示讓您知道您需要做什麼。