SSH Connection Java

Question

Is it possible to make a ssh connection to a server with java?

Answer 1

Yes, I used http://sourceforge.net/projects/sshtools/ in a Java application to connect to a UNIX server over SSH, it worked quite well.

Answer 2

jsch and sshJ are both good clients. I'd personally use sshJ as the code is documented much more thoroughly.

jsch has widespread use, including in eclipse and apache ant. I've also had issues with jsch and AES encrypted private keys, which required re-encrypting in 3DES, but that could just be me.

Answer 3

Yes, it is possible. You can try the following code:

package mypackage;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import java.io.*;

public class SSHReadFile
    {
    public static void main(String args[])
    {
    String user = "user";
    String password = "password";
    String host = "yourhostname";
    int port=22;

    String remoteFile="/home/john/test.txt";

    try
        {
        JSch jsch = new JSch();
        Session session = jsch.getSession(user, host, port);
            session.setPassword(password);
            session.setConfig("StrictHostKeyChecking", "no");
        System.out.println("Establishing Connection...");
        session.connect();
            System.out.println("Connection established.");
        System.out.println("Crating SFTP Channel.");
        ChannelSftp sftpChannel = (ChannelSftp) session.openChannel("sftp");
        sftpChannel.connect();
        System.out.println("SFTP Channel created.");
        }
    catch(Exception e){System.err.print(e);}
    }
    }