springboot如何通过SSH连接远程服务器

		<dependency>
            <groupId>com.jcraft</groupId>
            <artifactId>jsch</artifactId>
            <version>0.1.53</version>
        </dependency>

import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import java.util.Properties;

/**
 * SSH连接远程服务器转发工具类
 */
public class SshConnectionTool {

    //ssh连接的用户名
    private final static String SSH_USER = "test";
    //ssh连接的密码
    private final static String SSH_PASSWORD = "123456";
    //ssh远程连接的ip地址
    private final static String SSH_REMOTE_SERVER = "12.34.56.78";
    //ssh连接的端口号
    private final static int SSH_REMOTE_PORT = 2721;
    //远程mysql连接的IP地址
    private final static String MYSQL_REMOTE_SERVER = "124.543.789.111";
    //本地数据库连接时用的端口号，和yml配置的端口一致
    private final static int LOCAl_PORT = 3309;
    //远程数据库端口用的端口号
    private final static int REMOTE_PORT = 31494;

    private Session sesion; //ssh 会话

    public void closeSSH ()
    {
        sesion.disconnect();
    }

    public SshConnectionTool () throws Throwable
    {

        JSch jsch = new JSch();

        sesion = jsch.getSession(SSH_USER, SSH_REMOTE_SERVER, SSH_REMOTE_PORT);

        sesion.setPassword(SSH_PASSWORD);

        //设置连接过程不校验known_hosts文件中的信息
        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        sesion.setConfig(config);

        sesion.connect(); //ssh 建立连接！

        //根据安全策略，您必须通过转发端口进行连接
        sesion.setPortForwardingL(LOCAl_PORT, MYSQL_REMOTE_SERVER, REMOTE_PORT);
    }
}

import org.springframework.stereotype.Component;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

/**
 * SSH链接 监视器
 */
@Component
public class SshContextListener implements ServletContextListener {
    private SshConnectionTool conexionssh;
    public SshContextListener() {
        super();
    }
    /**
     * @see ServletContextListener#contextInitialized(ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent arg0) {
        System.out.println("Context initialized ... !");
        try {
            conexionssh = new SshConnectionTool();
        } catch (Throwable e) {
            e.printStackTrace(); // 连接失败
        }
    }

    /**
     * @see ServletContextListener#contextDestroyed(ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent arg0) {
        System.out.println("Context destroyed ... !");
        conexionssh.closeSSH(); // 断开连接
    }
}

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: com.alibaba.druid.pool.DruidDataSource