How to connect to a remote server via SSH in springboot

		<dependency>
            <groupId></groupId>
            <artifactId>jsch</artifactId>
            <version>0.1.53</version>
        </dependency>

import ;
import ;
import ;

/**
  * SSH connection remote server forwarding tool class
  */
public class SshConnectionTool {

    //Ssh connection username    private final static String SSH_USER = "test";
    //Ssh connection password    private final static String SSH_PASSWORD = "123456";
    //The IP address of the remote connection of ssh    private final static String SSH_REMOTE_SERVER = "12.34.56.78";
    //The port number of ssh connection    private final static int SSH_REMOTE_PORT = 2721;
    //The IP address of the remote mysql connection    private final static String MYSQL_REMOTE_SERVER = "124.543.789.111";
    //The port number used when connecting to the local database is the same as the port configured by yml    private final static int LOCAl_PORT = 3309;
    //The port number used for the remote database port    private final static int REMOTE_PORT = 31494;

    private Session sesion; //ssh session
    public void closeSSH ()
    {
        ();
    }

    public SshConnectionTool () throws Throwable
    {

        JSch jsch = new JSch();

        sesion = (SSH_USER, SSH_REMOTE_SERVER, SSH_REMOTE_PORT);

        (SSH_PASSWORD);

        //Set the connection process not to verify the information in the known_hosts file        Properties config = new Properties();
        ("StrictHostKeyChecking", "no");
        (config);

        (); //ssh establish a connection!
        // According to security policy, you must connect via the forwarding port        (LOCAl_PORT, MYSQL_REMOTE_SERVER, REMOTE_PORT);
    }
}

import ;
import ;
import ;

/**
  * SSH link Monitor
  */
@Component
public class SshContextListener implements ServletContextListener {
    private SshConnectionTool conexionssh;
    public SshContextListener() {
        super();
    }
    /**
     * @see ServletContextListener#contextInitialized(ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent arg0) {
        ("Context initialized ... !");
        try {
            conexionssh = new SshConnectionTool();
        } catch (Throwable e) {
            (); // Connection failed        }
    }

    /**
     * @see ServletContextListener#contextDestroyed(ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent arg0) {
        ("Context destroyed ... !");
        (); // Disconnect    }
}

url: jdbc:mysql://127.0.0.1:3309/test?useUnicode=true&characterEncoding=UTF8&useSSL=false&serverTimezone=Asia/Shanghai&allowMultiQueries=true
username: root
password: root
type: