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我需要登錄到一個網站，從各種頁面登錄時下載源代碼。我能夠做到這一點很容易，當使用Windows窗體WebBrowser類，但這不是合適的，我需要能夠通過WebRequest或其他人做到這一點。不幸的是，它不喜歡我如何處理cookie。C＃登錄網站和使用WebRequest下載源代碼 - 問題與Cookie
我使用以下代碼並獲得以下響應：{「w_id」：「LoginForm2_6」，「message」：「請在您的瀏覽器中啓用cookie以便登錄。」，「success」：0， 「showLink」：false}
string url2 = "%2Fapp%2Futils%2Flogin_form%2Fredirect%2Fhome";
string login = "username";
string password = "password";
string w_id = "LoginForm2_6";
string loginurl = "http://loginurl.com";
string cookieHeader;
WebRequest req = WebRequest.Create(loginurl);
req.Proxy = WebRequest.DefaultWebProxy;
req.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
req.Proxy.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
req.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
req.Method = "POST";
string postData = string.Format("w_id={2}&login={0}&password={1}&url2={3}", login, password, w_id, url2);
byte[] bytes = Encoding.ASCII.GetBytes(postData);
req.ContentLength = bytes.Length;
using (Stream os = req.GetRequestStream())
{
os.Write(bytes, 0, bytes.Length);
}
WebResponse resp = req.GetResponse();
cookieHeader = resp.Headers["Set-cookie"];
string pageSource = "";
using (StreamReader sr = new StreamReader(resp.GetResponseStream()))
{
pageSource = sr.ReadToEnd();
}
richTextBox1.Text = pageSource;
如果有人可以告訴我我哪裏出錯了，那將不勝感激。
此外，爲了讓你知道，如果我用web瀏覽器類下面，它工作在精細：
b.Navigate(fullurl, "", enc.GetBytes(postData), "Content-Type: application/x-www-form-urlencoded\r\n");