FtpClient upload speed is very slow, and the size of 0, upload failed

Problem:

　　Environment: VSFTP + FTPClient + Client

　　Use FTPClient upload time is always jammed, and the file size is 0, upload failed,

 

solution:

 Add code: Call FTPClient of enterLocalPassiveMode (); method, is set to passive mode, both can be resolved.

   // use of FTPClient 
    public  void FTPClientTest () throws Exception {
         // create an object FTPClient 
        FTPClient the FTP = new new FTPClient ();
         // 21 link ports used 
        ftp.connect ( " 169.254.18.16 " , 21 );
         // given user name and password and complete the registration link 
        ftp.login ( " ftpuser " , " ftpuser " ); 

        ftp.enterLocalPassiveMode (); 

        // Upload a file 
        InputStream IS = new new 
                FileInputStream (" D: /java.jpg " );
         // the specified directory to save the uploaded file 
        ftp.changeWorkingDirectory ( " / Home / ftpuser / Casual " );
         // open byte streaming 
        ftp.setFileType (FTPClient.BINARY_FILE_TYPE);
         // file upload 
        boolean b = ftp.storeFile ( " aa.jpg " , IS ); 
        System. OUT .println (b);
         // Log 
        ftp.logout (); 
    }