使用C＃以编程方式登录网站＃

Question

我想用C＃登录本网站：这是我的尝试，但它将我发送到第一页。也不回我的下一个页面，应该登录后可以看到，请大家帮我解决此问题：

string formParams = 
string.Format("mail={0}&password={1}", store@admin.com", "admin"); 
     string cookieHeader; 
     WebRequest req = WebRequest.Create("http://muslimgowns.com/dashboard/login/public_login"); 
      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"]; 
      using (StreamReader sr = new StreamReader(resp.GetResponseStream())) 
      { 
       string pageSource = sr.ReadToEnd(); 
       File.AppendAllText("first.txt", pageSource); 
      } 

      string pageSource1; 
      string getUrl = "http://muslimgowns.com/dashboard/home"; 
      WebRequest getRequest = WebRequest.Create(getUrl); 
      getRequest.Headers.Add("Cookie", cookieHeader); 
      WebResponse getResponse = getRequest.GetResponse(); 
      using (StreamReader sr = new StreamReader(getResponse.GetResponseStream())) 
      { 
       pageSource1 = sr.ReadToEnd(); 
       File.AppendAllText("second.txt", pageSource1); 
      } 
     } 

Answer 1

好像第一GET请求public_login回报饼干的量，并与凭证POST请求之后必须送到login_access而不是public_login

使用的HttpWebRequest代替WebRequest，并通过设置cookie容器有帮助，而实际上服务器HTTP 302 Redirect响应POST请求和HttpWebRequest自动跟随这重定向并下载仪表板。

请始终使用像Fiddler或Wireshark或网络监视器或浏览器的开发人员工具的http跟踪工具来查看收到的内容（cookie，标题等）以及发回的内容。这就是我得到这一切的方式。

这里是修复：

string formParams = string.Format("mail={0}&password={1}", "store@admin.com", "admin"); 

CookieContainer cookieContainer = new CookieContainer(); 

HttpWebRequest req = WebRequest.CreateHttp("http://muslimgowns.com/dashboard/login/public_login"); 
req.CookieContainer = cookieContainer; 
req.GetResponse(); // This is just to get the initial cookies returned by the public_login 

req = WebRequest.CreateHttp("http://muslimgowns.com/dashboard/login/login_access"); 
req.CookieContainer = cookieContainer; // Set the cookie container which contains the cookies returned by the public_login 

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(); 

using (StreamReader sr = new StreamReader(resp.GetResponseStream())) 
{ 
    string pageSource = sr.ReadToEnd(); 
    File.AppendAllText("first.txt", pageSource); // Dashboard is returned. 
}