FTPClient中使用completePendingCommand方法注意事项

    * There are a few FTPClient methods that do not complete the
    * entire sequence of FTP commands to complete a transaction.  These
    * commands require some action by the programmer after the reception
    * of a positive intermediate command.  After the programmer's code
    * completes its actions, it must call this method to receive
    * the completion reply from the server and verify the success of the
    * entire transaction.
   public boolean completePendingCommad() throws IOException;
   {
        return FTPReply.isPositiveCompletion(getReply());
   }

卡住代码
 String line = _controlInput_.readLine();

public boolean storeFile(String remote, InputStream local)
public OutputStream storeFileStream(String remote)

public boolean retrieveFile(String remote, OutputStream local)
public InputStream retrieveFileStream(String remote)