How to Retrieve Files from an SFTP Server Using Java?

How to Retrieve a File from a Server Using SFTP in Java

When attempting to retrieve a file from a remote server using SFTP, an esteemed option is the JSch library. It's a coveted choice for projects like Eclipse, Ant, and Apache Commons HttpClient, offering robust features including both user/pass and certificate-based logins.

To demonstrate SFTP retrieval using JSch, we present a simplified example:

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;

public class SftpFileRetrieval {

    public static void main(String[] args) throws Exception {
        // Establish a JSch session
        JSch jsch = new JSch();
        Session session = jsch.getSession("remote-username", "remote-host");
        session.setPassword("remote-password");
        session.connect();

        // Open an SFTP channel
        Channel channel = session.openChannel("sftp");
        channel.connect();

        // Get the SFTP channel
        ChannelSftp sftpChannel = (ChannelSftp) channel;

        // Retrieve the file
        sftpChannel.get("remote-file", "local-file");

        // Close the channel and session
        sftpChannel.exit();
        session.disconnect();
    }
}

Remember to customize the parameters according to your specific server settings. With this code, you can effortlessly retrieve files from remote servers using SFTP in your Java applications.

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