使用C＃中的WebRequests登錄到YouTube

Question

我對在C＃中使用WebRequests很感興趣，並且想要幫助登錄到YouTube並將cookie存儲到cookie容器中。任何幫助將非常感激。

Answer 1

如果您使用的是.NET客戶端庫（http://code.google.com/p/google-gdata/），則需要時使用您提供的憑據進行身份驗證：

https://developers.google.com/youtube/2.0/developers_guide_dotnet#Authentication

的GData在C＃

在使用的GData API沒有明確的退出方式，你可以取消你的令牌，但它也將在一段時間後失效，如果你不使用它。關於如何使令牌失效的具體細節根據採用的認證機制（OAuth，AuthSub，ClientLogin）而有所不同。

您也可以參考這篇文章在CodeProject，Manage YouTube using C# and Youtube API 1.6

YouTubeService service = new YouTubeService(); 
service.setUserCredentials(txtUser.Text , txtPassword.Text); 
try { service.QueryClientLoginToken(); } 
catch(System.Net.WebException e) { MessageBox.Show(e.Message); } 

新增：我已經調整了下面的代碼以符合您的要求。

class YouTube 
{ 
    public void Login() 
    { 
     HttpWebRequest request = GetNewRequest("https://accounts.google.com/ServiceLoginAuth", cookies); 
     request.Referer = "https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Faction_handle_signin%3Dtrue%26feature%3Dsign_in_button%26nomobiletemp%3D1%26hl%3Den_US%26next%3D%252F&uilel=3&hl=en_US&service=youtube"; 
     request.Host = "accounts.google.com"; 
     Dictionary<string, string> parameters = new Dictionary<string, string>{ 
      {"continue","https%3A%2F%2Fwww.youtube.com%2Fsignin%3Faction_handle_signin%3Dtrue%26feature%3Dsign_in_button%26nomobiletemp%3D1%26hl%3Den_US%26next%3D%252F"}, 
      {"service","youtube"},{"uilel","3"},{"dsh","157212168103955870"},{"hl","en_US"}, 
      {"GALX","PTqcwpZb2aE"},{"pstMsg","1"},{"dnConn",""}, {"checkConnection","youtube%3A248%3A1"}, 
      {"checkedDomains","youtube"}, {"timeStmp",""}, {"secTok",""}, {"Email","username"}, {"Passwd","password"}, 
      {"signIn","Sign+in"}, {"PersistentCookie","yes"}, {"rmShown","1"}}; 
     HttpWebResponse response = MakeRequest(request, cookies, parameters); 
     response.Close(); 
    } 

    private static CookieContainer cookies = new CookieContainer(); 

    private static HttpWebRequest GetNewRequest(string targetUrl, CookieContainer SessionCookieContainer) 
    { 
     HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(targetUrl); 
     request.CookieContainer = SessionCookieContainer; 
     request.AllowAutoRedirect = false; 
     return request; 
    } 

    private static HttpWebResponse MakeRequest(HttpWebRequest request, CookieContainer SessionCookieContainer, Dictionary<string, string> parameters = null) 
    { 
     request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5Accept: */*"; 
     request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; 
     request.CookieContainer = SessionCookieContainer; 
     request.AllowAutoRedirect = false; 

     request.Method = "POST"; 
     request.ContentType = "application/x-www-form-urlencoded"; 
     string postData = string.Empty; 
     foreach (KeyValuePair<String, String> parametro in parameters) 
     { 
      if (postData.Length == 0)     
       postData += String.Format("{0}={1}", parametro.Key, parametro.Value);     
      else     
       postData += String.Format("&{0}={1}", parametro.Key, parametro.Value);     
     } 

     byte[] postBuffer = UTF8Encoding.UTF8.GetBytes(postData); 
     using (Stream postStream = request.GetRequestStream()) 
     { 
      postStream.Write(postBuffer, 0, postBuffer.Length); 
     } 

     HttpWebResponse response = request.GetResponse() as HttpWebResponse; 
     SessionCookieContainer.Add(response.Cookies); 

     while (response.StatusCode == HttpStatusCode.Found) 
     { 
      response.Close(); 
      request = GetNewRequest(response.Headers["Location"], SessionCookieContainer); 
      response = (HttpWebResponse)request.GetResponse(); 
      SessionCookieContainer.Add(response.Cookies); 
     } 
     return response; 
    } 
} 

參考：http://social.msdn.microsoft.com/Forums/pl-PL/ncl/thread/40d249b5-a9ad-4068-8853-629fb20584a0