代碼工作正常，但我仍然無法登錄到IRCTC網站

Question

一切工作正常，但我們點擊submitData()按鈕，我會告訴我密碼，而不是myhomepage頁，

所以第一個我瀏覽它的登錄頁面將設置cookie，然後被存儲在cookie的集裝箱代碼cookie是

CookieContainer cookieJar = new CookieContainer(); 
public Form1() 
{ 
    String captcha; 
    InitializeComponent(); 
} 

private void BUTTON_LOGIN_Click(object sender, EventArgs e) 
{ 
    //Get captcha   
    var request = (HttpWebRequest)HttpWebRequest.Create("https://www.irctc.co.in/eticketing/loginHome.jsf"); 
    request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 
    request.KeepAlive = true; 
    request.CookieContainer = cookieJar; 
    request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"; 

    var response = request.GetResponse(); 
    using (var stream = response.GetResponseStream()) 
    { 

    } 

    // need array, different storage for every cookies 
    // 
    foreach (Cookie c in cookieJar.GetCookies(response.ResponseUri)) 
    { 
     request.CookieContainer.Add(c); 
     MessageBox.Show("Cookie['" + c.Name + "']: " + c.Value); 
    } 
} 

然後我使用的cookie

private void pictureBox1_Click(object sender, EventArgs e) // This Event Refresh thr captcha 
{ 
    //Get captch  

    var request =(HttpWebRequest)HttpWebRequest.Create("https://www.irctc.co.in/eticketing/captchaImage"); 
    request.Accept = "image/webp,image/*,*/*;q=0.8"; 
    WebHeaderCollection myWebHeaderCollection = request.Headers; 
    myWebHeaderCollection.Add("Accept-Language", "en-US;q=0.8"); 
    myWebHeaderCollection.Add("Upgrade-Insecure-Requests", "1"); 
    request.KeepAlive = true; 

    Uri target = new Uri("https://www.irctc.co.in"); 
    cookieJar.Add(new Cookie("language", "en_IN") { Domain = target.Host }); 

    request.CookieContainer = cookieJar; 

    request.Referer = "https://www.irctc.co.in/eticketing/loginHome.jsf"; 
    request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"; 


    var response = request.GetResponse(); 
    using (var stream = response.GetResponseStream()) 
    { 

     pictureBox1.Image = Bitmap.FromStream(stream); 
    } 

    // need array, different storage for every cookies 
    // 
    foreach (Cookie c in cookieJar.GetCookies(response.ResponseUri)) 
    { 
     request.CookieContainer.Add(c); 
     MessageBox.Show("Cookie['" + c.Name + "']: " + c.Value); 
    } 
} 


private void button1_Click(object sender, EventArgs e) 
{ 
    submitData(); 
} 

private void displayHtml(String html) 
{ 
    webBrowser1.Navigate("about:blank"); 
    while (webBrowser1.Document == null || webBrowser1.Document.Body == null) 
     Application.DoEvents(); 
    webBrowser1.Document.OpenNew(true).Write(html); 
} 

用於請求驗證碼

最後我填寫captcha到文本框後提交數據，這裏是錯誤這是重新導向我的登錄頁面，所以什麼是錯的。

private void submitData() 
{ 
    try 
    { 
     String user = "myusername"; 
     String pass = "mypassword"; 
     String submit = "Submit"; 
     String captcha=richTextBox1.Text.ToString() ; 

     ASCIIEncoding encoding = new ASCIIEncoding(); 
     // MessageBox.Show(captcha); 
     string postData = "j_username=" + user + "&j_password=" + pass + "&j_captcha=" + captcha + "&submit=" + submit + "&tneg=" ; 
     byte[] data = Encoding.UTF8.GetBytes(postData); 

     Uri target = new Uri("https://www.irctc.co.in"); 



     cookieJar.Add(new Cookie("language", "en_IN"){ Domain = target.Host }); 
     HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("https://www.irctc.co.in/eticketing/home"); 
     request.CookieContainer = cookieJar; 

     WebHeaderCollection myWebHeaderCollection = request.Headers; 
     myWebHeaderCollection.Add("Accept-Language", "en-US;q=0.8"); 
     myWebHeaderCollection.Add("Upgrade-Insecure-Requests", "1"); 

     request.Method = "POST"; 
     request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"; 
     request.ContentType = "application/x-www-form-urlencode"; 
     request.Referer = "https://www.irctc.co.in/eticketing/loginHome.jsf"; 
     request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 
     request.ServicePoint.Expect100Continue = false; 

    //  var bytes = Encoding.UTF8.GetBytes("action=login&from=http%3A%2F%2Fwww.dofus.com%2Ffr&login=user123&password=password1232F&remember=1"); 
    // request.ContentLength = bytes.Length; 

     request.ContentLength = data.Length; 
     request.KeepAlive = true; 
//  request.AutomaticDecompression = DecompressionMethods.GZip; 
    // request.AutomaticDecompression = DecompressionMethods.Deflate; 

//  request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br"); 
     // request.SendChunked = true; 
    // request.TransferEncoding = "gzip, deflate, br"; 
     request.Host = "www.irctc.co.in"; 

     //request.Headers.Add 
     Stream stream = request.GetRequestStream(); 
     stream.Write(data, 0, data.Length); 
     stream.Close(); 

     HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 
     stream = response.GetResponseStream(); 

     foreach (Cookie c in cookieJar.GetCookies(request.RequestUri)) 
     { 

      MessageBox.Show("Cookie['" + c.Name + "']: " + c.Value); 
     } 
     StreamReader sr = new StreamReader(stream); 
     //richTextBox1.Text = sr.ReadToEnd(); 
     String myhtml = sr.ReadToEnd().ToString(); 

     displayHtml(myhtml); 

     sr.Close(); 
     stream.Close(); 
    } 
    catch (Exception ex) 
    { 
     MessageBox.Show("Error : " + ex.Message); 
    } 
} 

Answer 1

在方法submitData（）

request.ContentType = "application/x-www-form-urlencode" 

這裏是一個錯字，你已經錯過了一個 'd'

它應該是這樣的： -

request.ContentType = "application/x-www-form-urlencoded" 

ContentType是「application/x-www-form-urlencode d」。

如果服務器無法理解表單數據類型（在這種情況下，服務器未知「application/x-www-form-urlencode」），那麼它將拒絕請求並將用戶重定向到登錄頁面如你所說。

您還可以檢查Form ContentType in HTML Forms(w3.org)獲取更多信息。

希望這會有所幫助:)