Download directory using FTP

Hi everyone. I am looking for an easy way to download the contents of a whole directory from an FTP server using Java. Any ideas?

Regards,
Theodore

Ok, I have another question. I am trying to simply download a file (known) URL from an FTP server I have. Here's the code:

Code:

---

    try{
        URL url = new URL("ftp://USERNAME:PASSWORD@IP:21/DIR/FILE");
        try{
          URLConnection con = url.openConnection();

          BufferedInputStream in = new BufferedInputStream(con.getInputStream());
          FileOutputStream out = new FileOutputStream("C:\\File");

          int i = 0;
          byte[] bytesIn = new byte[1024];
          while ( (i = in.read(bytesIn)) >= 0) {
            out.write(bytesIn, 0, i);
            System.out.println(i);
          }
          out.close();
          in.close();
        }
        catch (IOException mal) {System.out.println(mal);}
      }
      catch (MalformedURLException mal) {}
  }

---

So, when I try to run this code inside an applet, I get the following exception:

Quote:

---

sun.net.ftp.FtpProtocolException: PORT :501 PORT not allowed after EPSV ALL

---

Any ideas?
Thanx,
Theodore

Maybe this could help,
http://groups.google.com/group/comp....934e2904a048e2

Thanx for the reply but I have already read this archive and that didnt help me.
Any other ideas?
Regards,
Theodore

The whole point was ... use apache commons.
Like you saw, in the googling, it's a feature which gives a lot of trouble, with SUN libraries.

Look at the following java api. The method you are wanting to use is Ftp.downloadDir

http://www.jscape.com/sftp/

Quote:

---

Originally Posted by [email protected]

Look at the following java api. The method you are wanting to use is Ftp.downloadDir

http://www.jscape.com/sftp/

---

Thanx alot, but this is not a free javaftp client...

Ok guys, as HackmanC suggested I used apache common jar files and I managed to open ftp connections. Now I have another question. The sample code I found downloads a file and its sth like this:

Code:

---

    ftp.connect(server);
...
    reply = ftp.getReplyCode();
...
          if (!ftp.login(username, password)) {
            ftp.logout();
          }
          else
          {
            ftp.setFileType(FTP.BINARY_FILE_TYPE);
            ftp.enterLocalPassiveMode();
            OutputStream output;
            output = new FileOutputStream(fileNameTarget);
            if (ftp.retrieveFile(pathToDownload, output))
              System.out.println("FILE DOWNLOADED!");
            else
              System.out.println("A PROBLEM OCCURED WHILE TRYING TO DOWNLOAD THE FILE!");
            output.close();
            ftp.logout();
          }
...

---

OK this works fine, but I was wondering if I can change the port on which the ftp client is connected. I suppose the above code uses by default, port 21. Can I change the port?
Thanx in advance,
THeodore

I believe since the FTPClient class you are using extends from SocketClient you can call connect() with this prototype:

Code:

---

connect(InetAddress host, int port)

---

Dont take my word for it I just gave it a quick look.

Thanx alot. I used the connect() method with the port argument (and even tried setDefaultPort(). The problem is that I want to use port 22, in order to connect to a sftp server. And I get a java exception which is like:

org.apache.commons.net.MalformedServerReplyException: Could not parse response code.
Server Reply: Protocol mismatch.
.....

Can I not achieve sftp connection using the apache class?
Thanx in advance,
Theodore