登录网站并使用cookie获取其他页面的来源

我正在尝试登录TV Rage网站并获取My Shows页面的源代码。 我已成功登录（我已经检查了我的post请求的响应）但是当我尝试在“我的显示”页面上执行获取请求时，我被重定向到登录页面。

这是我用来登录的代码：

private string LoginToTvRage() { string loginUrl = "http://www.tvrage.com/login.php"; string formParams = string.Format("login_name={0}&login_pass={1}", "xxx", "xxxx"); string cookieHeader; WebRequest req = WebRequest.Create(loginUrl); req.ContentType = "application/x-www-form-urlencoded"; req.Method = "POST"; byte[] bytes = Encoding.ASCII.GetBytes(formParams); 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 responseStream; using (StreamReader sr = new StreamReader(resp.GetResponseStream())) { responseStream = sr.ReadToEnd(); } return cookieHeader; } 

然后我将cookieHeader传递给这个应该获取My Shows页面源的方法：

  private string GetSourceForMyShowsPage(string cookieHeader) { string pageSource; string getUrl = "http://www.tvrage.com/mytvrage.php?page=myshows"; WebRequest getRequest = WebRequest.Create(getUrl); getRequest.Headers.Add("Cookie", cookieHeader); WebResponse getResponse = getRequest.GetResponse(); using (StreamReader sr = new StreamReader(getResponse.GetResponseStream())) { pageSource = sr.ReadToEnd(); } return pageSource; } 

我一直在使用上一个问题作为指导，但我不知道为什么我的代码不起作用。

Answer 1

这是使用WebClient的代码的简化和工作版本：

 class Program { static void Main() { var shows = GetSourceForMyShowsPage(); Console.WriteLine(shows); } static string GetSourceForMyShowsPage() { using (var client = new WebClientEx()) { var values = new NameValueCollection { { "login_name", "xxx" }, { "login_pass", "xxxx" }, }; // Authenticate client.UploadValues("http://www.tvrage.com/login.php", values); // Download desired page return client.DownloadString("http://www.tvrage.com/mytvrage.php?page=myshows"); } } } /// 
 /// A custom WebClient featuring a cookie container /// 
 public class WebClientEx : WebClient { public CookieContainer CookieContainer { get; private set; } public WebClientEx() { CookieContainer = new CookieContainer(); } protected override WebRequest GetWebRequest(Uri address) { var request = base.GetWebRequest(address); if (request is HttpWebRequest) { (request as HttpWebRequest).CookieContainer = CookieContainer; } return request; } }