Move file from Windows to FtpServer(Unix)

[Srinivasa Maddi]

Hi

I have written a java program which on running will ask the source path and dest path, giving so it will copy the list of files from source directory to dest directory. But here my requrement is to copy the files from my windows machine to a unix machine over ftp. I have all the required ip, userid, password, port number and ofcourse the dest directory of my ftpserver with me. Can anyone help me now further

Regards,
Maddy

[Maneesh Godbole]

Check this old thread

[Srinivasa Maddi]

Thanks for quick response.
But my requirement is not to use any third party jars here.

[Ernest Friedman-Hill]

Srinivasa Maddi wrote:Thanks for quick response.
But my requirement is not to use any third party jars here.

That's really silly. But given that constraint: you need to learn about the FTP protocol, and implement the client half. It's relatively complicated protocol that uses two separate client/server connections. Here's the protocol reference. Have fun!

[Joe Ess]

It's possible to do FTP using URL/URLConnection as detailed in our File Upload FAQ

[Srinivasa Maddi]

I am getting the following exception on using the same

Exception in thread "main" java.io.FileNotFoundException: CWD export: 550 export: No such file or directory.

at sun.net.ftp.FtpClient.readReply(FtpClient.java:236)
at sun.net.ftp.FtpClient.issueCommand(FtpClient.java:193)
at sun.net.ftp.FtpClient.issueCommandCheck(FtpClient.java:206)
at sun.net.ftp.FtpClient.cd(FtpClient.java:658)
at sun.net.www.protocol.ftp.FtpURLConnection.cd(FtpURLConnection.java:338)
at sun.net.www.protocol.ftp.FtpURLConnection.getOutputStream(FtpURLConnection.java:477)
at Temp.ftpConnection(Temp.java:10)
at Temp.main(Temp.java:13)

My code

URL url = new URL("ftp://user:password@ftp_server_ip:/export/home/fcdev");

Could you please suggest me if i want to upload my files to /export/home/fcdev directory of the above ftp server. How can i code it.

[Joe Ess]

Does the directory /export/home/fcdev exist?
Can you log in with an FTP client using the credentials you've specified and navigate to that directory?

[Srinivasa Maddi]

yes the above directory exists and ofcourse i am able to login with the above credentials

[Joe Ess]

Try following the directory with a slash:

URL url = new URL("ftp://user:password@ftp_server_ip:/export/home/fcdev/");     

On my FTP server, if I give a first-level directory (i.e. "/www"), the URL will return a directory listing. If I use a non-root directory (i.e. "/www/images"), just the directory name will throw a FileNotFoundException. If I add the slash (i.e. "/www/images/"), I get the directory list.

[Srinivasa Maddi]

Please see my code below(correct me if i am wrong)

    
import java.io.*;
import java.net.*;
import sun.net.ftp.FtpLoginException;

public class Temp {
	Temp() {}

	public void ftpConnection() throws Exception {
		URL url = new URL("ftp://username:password@ipaddress:portnumber/export/home/fcdev/");
		URLConnection conn = url.openConnection();
		OutputStream os = conn.getOutputStream(); 
	}
public static void main(String a[]) throws Exception {
	new Temp().ftpConnection();
}
}

On running the same i am getting the below error:

  
Exception in thread "main" java.io.IOException: illegal filename for a PUT
	at sun.net.www.protocol.ftp.FtpURLConnection.getOutputStream(FtpURLConnection.java:475)
	at Temp.ftpConnection(Temp.java:11)
	at Temp.main(Temp.java:14)
  

[Rob Spoor]

You're trying to write directly to a folder.

[Srinivasa Maddi]

yes because i want my file to be placed in that folder.

[Maneesh Godbole]

Yes. But you should be following the folder name with the file name like

URL url = new URL("ftp://username:password@ipaddress:portnumber/export/home/fcdev/filename.xxx");