FtpWebResponse.GetResponseStream 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
检索包含从 FTP 服务器上发送的响应数据的流。
public:
override System::IO::Stream ^ GetResponseStream();public override System.IO.Stream GetResponseStream();override this.GetResponseStream : unit -> System.IO.StreamPublic Overrides Function GetResponseStream () As Stream返回
可读取的 Stream 实例，它包含与响应一起返回的数据；如果服务器未返回任何响应数据，则为 Null。
例外
响应未返回数据流。
示例
下面的代码示例演示如何获取请求的 ListDirectory 响应流。
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;
}
注解
读取数据后，必须关闭流。 关闭包含流的对象时， FtpWebResponse 将自动关闭该流。
除非请求方法是 DownloadFile 或 ListDirectory，否则将引发异常。
