Come ottenere cookie JSESSIONID in WebClient

Question

Ho implementato il seguente metodo per ottenere JsessioniD dai cookie. WebSite utilizza l'autenticazione del modulo.

Ecco cosa ho implementato.

public override void ViewDidLoad() 
    { 
     base.ViewDidLoad(); 
     using(var client= new CookieAwareWebClient()) 
     { 
      var values= new NameValueCollection 
      { 
      {"username","admin"}, 
      {"password","admin"}, 
      }; 
      client.UploadValues("myURL/j_security_check",values); 
      WebHeaderCollection myWebHeaderCollection = client.ResponseHeaders; 

      for (int i=0; i < myWebHeaderCollection.Count; i++)    
Console.WriteLine ("\t" + myWebHeaderCollection.GetKey(i) + " = " + myWebHeaderCollection.Get(i)); 
     }; 
    } 

CookieAwareWebClient classe è implementata come segue:

public class CookieAwareWebClient : WebClient 
    { 

    public CookieAwareWebClient() 
    { 
     CookieContainer = new CookieContainer(); 
    } 

    public CookieContainer CookieContainer { get; private set; } 

    protected override WebRequest GetWebRequest(Uri address) 
    { 
     var request = (HttpWebRequest)base.GetWebRequest(address); 
     request.CookieContainer = CookieContainer; 
     return request; 
    } 
    } 

La mia domanda è come ottenere solo JSESSIONID?

Answer 1

è possibile memorizzare i cookie di risposta in una proprietà separata:

public class CookieAwareWebClient : WebClient 
{ 
    public CookieAwareWebClient() 
    { 
     CookieContainer = new CookieContainer(); 
     this.ResponseCookies = new CookieCollection(); 
    } 

    public CookieContainer CookieContainer { get; private set; } 
    public CookieCollection ResponseCookies { get; set; } 

    protected override WebRequest GetWebRequest(Uri address) 
    { 
     var request = (HttpWebRequest)base.GetWebRequest(address); 
     request.CookieContainer = CookieContainer; 
     return request; 
    } 

    protected override WebResponse GetWebResponse(WebRequest request) 
    { 
     var response = (HttpWebResponse)base.GetWebResponse(request); 
     this.ResponseCookies = response.Cookies; 
     return response; 
    } 
} 

e poi:

client.UploadValues("myURL/j_security_check",values); 
Cookie jSessionID = client.ResponseCookies["JSESSIONID"]; 
if (jSessionID != null) 
{ 
    // The server set a cookie called JSESSIONID, you can use it here: 
    string value = jSessionID.Value; 
} 

Answer 2

Il codice in alternativa seguente potrebbe essere usata per HttpRequest basato sul seguente articolo: https://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.cookiecontainer%28v=vs.110%29.aspx

private void FindCookie() 
     { 
      HttpWebRequest request = WebRequest.Create (addyourURL) as HttpWebRequest; 
      request.CookieContainer = new CookieContainer();  
      // Set the Method property of the request to POST. 
      request.Method = "POST"; 
      // Create POST data and convert it to a byte array. 
      string postData = "loginForm=loginForm&j_username=admin&j_password=admin"; 
      byte[] byteArray = Encoding.UTF8.GetBytes (postData); 
      // Set the ContentType property of the WebRequest. 
      request.ContentType = "application/x-www-form-urlencoded"; 
      // Set the ContentLength property of the WebRequest. 
      request.ContentLength = byteArray.Length; 
      // Get the request stream. 
      Stream dataStream = request.GetRequestStream(); 
      // Write the data to the request stream. 
      dataStream.Write (byteArray, 0, byteArray.Length); 
      // Close the Stream object. 
      dataStream.Close(); 
      // Get the response. 
      HttpWebResponse response = request.GetResponse() as HttpWebResponse; 
      // Display the status. 
      Console.WriteLine (((HttpWebResponse)response).StatusDescription); 
      // Get the stream containing content returned by the server. 
      dataStream = response.GetResponseStream(); 
      // Open the stream using a StreamReader for easy access. 
      StreamReader reader = new StreamReader (dataStream); 
      // Read the content. 
      string responseFromServer = reader.ReadToEnd(); 
      // Display the content. 
      Console.WriteLine (responseFromServer); 
      // Clean up the streams. 
      reader.Close(); 
      dataStream.Close(); 
      response.Close(); 

      string sid = response.Cookies["JSESSIONID"].ToString(); 

      Console.WriteLine(sid); 
}