FtpWebResponse.GetResponseStream Metoda

  • Odwołanie

Definicja

Przestrzeń nazw:
System.Net
Zestaw:
System.Net.Requests.dll
Zestaw:
System.dll
Zestaw:
netstandard.dll
Źródło:
FtpWebResponse.cs
Źródło:
FtpWebResponse.cs
Źródło:
FtpWebResponse.cs

Pobiera strumień zawierający dane odpowiedzi wysyłane z serwera FTP.

public:
 override System::IO::Stream ^ GetResponseStream();
public override System.IO.Stream GetResponseStream ();
override this.GetResponseStream : unit -> System.IO.Stream
Public Overrides Function GetResponseStream () As Stream

Zwraca

Stream

Możliwe do Stream odczytu wystąpienie zawierające dane zwrócone z odpowiedzią; w przeciwnym razie, Null jeśli żadne dane odpowiedzi nie zostały zwrócone przez serwer.

Wyjątki

InvalidOperationException

Odpowiedź nie zwróciła strumienia danych.

Przykłady

Poniższy przykład kodu przedstawia pobieranie strumienia odpowiedzi dla ListDirectory żądania.

static bool ListFilesOnServer( Uri^ serverUri )
{
   // The serverUri should start with the ftp:// scheme.
   if ( serverUri->Scheme != Uri::UriSchemeFtp )
   {
      return false;
   }

   // Get the object used to communicate with the server.
   FtpWebRequest^ request = dynamic_cast<FtpWebRequest^>(WebRequest::Create( serverUri ));
   request->Method = WebRequestMethods::Ftp::ListDirectory;

   // Get the ServicePoint object used for this request, and limit it to one connection.
   // In a real-world application you might use the default number of connections (2),
   // or select a value that works best for your application.
   ServicePoint^ sp = request->ServicePoint;
   Console::WriteLine( "ServicePoint connections = {0}.", sp->ConnectionLimit );
   sp->ConnectionLimit = 1;
   FtpWebResponse^ response = dynamic_cast<FtpWebResponse^>(request->GetResponse());

   // The following streams are used to read the data returned from the server.
   Stream^ responseStream = nullptr;
   StreamReader^ readStream = nullptr;
   try
   {
      responseStream = response->GetResponseStream();
      readStream = gcnew StreamReader( responseStream,System::Text::Encoding::UTF8 );
      if ( readStream != nullptr )
      {
         // Display the data received from the server.
         Console::WriteLine( readStream->ReadToEnd() );
      }

      Console::WriteLine( "List status: {0}", response->StatusDescription );
   }
   finally
   {
      if ( readStream != nullptr )
      {
         readStream->Close();
      }

      if ( response != nullptr )
      {
         response->Close();
      }
   }

   return true;
}

public static bool ListFilesOnServer(Uri serverUri)
{
    // The serverUri should start with the ftp:// scheme.
    if (serverUri.Scheme != Uri.UriSchemeFtp)
    {
        return false;
    }
    // Get the object used to communicate with the server.
    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
    request.Method = WebRequestMethods.Ftp.ListDirectory;

    // Get the ServicePoint object used for this request, and limit it to one connection.
    // In a real-world application you might use the default number of connections (2),
    // or select a value that works best for your application.

    ServicePoint sp = request.ServicePoint;
    Console.WriteLine("ServicePoint connections = {0}.", sp.ConnectionLimit);
    sp.ConnectionLimit = 1;

    FtpWebResponse response = (FtpWebResponse) request.GetResponse();

    // The following streams are used to read the data returned from the server.
    Stream responseStream = null;
    StreamReader readStream = null;
    try
    {
        responseStream = response.GetResponseStream();
        readStream = new StreamReader(responseStream, System.Text.Encoding.UTF8);

        if (readStream != null)
        {
            // Display the data received from the server.
            Console.WriteLine(readStream.ReadToEnd());
        }
        Console.WriteLine("List status: {0}",response.StatusDescription);
    }
    finally
    {
        if (readStream != null)
        {
            readStream.Close();
        }
        if (response != null)
        {
            response.Close();
        }
    }

    return true;
}

Uwagi

Po odczytaniu danych należy zamknąć strumień. Strumień jest automatycznie zamykany po zamknięciu FtpWebResponse obiektu, który go zawiera.

Wyjątek jest zgłaszany, chyba że metoda żądania to DownloadFile lub ListDirectory.

Dotyczy

Zobacz też