Radhakrishna Gorenta Radhakrishna Gorenta - 3 months ago 37
Java Question

how to transfer a file through SFTP in java?

How to transfer a file through SFTP in java? I want sample code for SFTP client.
I want to embed the SFTP server in my application and the client should able to send a file to my application.


PS: This was asked for SFTP client. And This question is not a duplicate of other two questions.

Answer

Try this code.

public  void send (String fileName) {
        String SFTPHOST = "host:IP";
        int SFTPPORT = 22;
        String SFTPUSER = "username";
        String SFTPPASS = "password";
        String SFTPWORKINGDIR = "file/to/transfer";

        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        System.out.println("preparing the host information for sftp.");
        try {
            JSch jsch = new JSch();
            session = jsch.getSession(SFTPUSER, SFTPHOST, SFTPPORT);
            session.setPassword(SFTPPASS);
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();
            System.out.println("Host connected.");
            channel = session.openChannel("sftp");
            channel.connect();
            System.out.println("sftp channel opened and connected.");
            channelSftp = (ChannelSftp) channel;
            channelSftp.cd(SFTPWORKINGDIR);
            File f = new File(fileName);
            channelSftp.put(new FileInputStream(f), f.getName());
            log.info("File transfered successfully to host.");
        } catch (Exception ex) {
             System.out.println("Exception found while tranfer the response.");
        }
        finally{

            channelSftp.exit();
            System.out.println("sftp Channel exited.");
            channel.disconnect();
            System.out.println("Channel disconnected.");
            session.disconnect();
            System.out.println("Host Session disconnected.");
        }
    }   
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