Java SSH 秘钥连接mysql数据库的方法

<dependency>
            <groupId>com.jcraft</groupId>
            <artifactId>jsch</artifactId>
            <version>0.1.55</version>
 </dependency>

#ssh连接是否开启
ssh.forward.enabled=true
#SSH连接跳板机地址 必填
ssh.forward.host=
#SSH连接端口  必填  固定
ssh.forward.port=22
#SSH连接用户名  必填  
ssh.forward.username=
#SSH连接密码 
ssh.forward.password=
#本地起的  必填  固定
ssh.forward.from_host=localhost
#本地开启的端口  必填 
ssh.forward.from_port=3307
#需要监听的远程服务的ip  必填
ssh.forward.to_host=
#需要监听的远程端口  必填
ssh.forward.to_port=3306
#SSH连接秘钥地址，也可以使用rsa.ppk文件
ssh.identity=C:\\Users\\69425\\.ssh\\id_rsa

import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.web.servlet.ServletContextInitializer;
import org.springframework.stereotype.Component;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.io.IOException;
import java.util.Properties;

@Slf4j
@Component
public class SshConfiguration implements ServletContextInitializer {

    public SshConfiguration() {
        try {
            Properties p = new Properties();
            p.load(getClass().getResourceAsStream("/application.ssh.properties"));
            //如果配置文件包含ssh.forward.enabled属性，则使用ssh转发
            if (p.getProperty("ssh.forward.enabled") != null) {
                log.info("ssh forward is opend.");
                log.info("ssh init ……");
                JSch jSch = new JSch();
                //需要使用秘钥时添加
                jSch.addIdentity(p.getProperty("ssh.identity"));
                Session session = jSch.getSession(p.getProperty("ssh.forward.username"), p.getProperty("ssh.forward.host"), Integer.parseInt(p.getProperty("ssh.forward.port")));
                session.setConfig("StrictHostKeyChecking", "no");
                session.setPassword(p.getProperty("ssh.forward.password"));
                session.connect();
                session.setPortForwardingL(p.getProperty("ssh.forward.from_host"), Integer.parseInt(p.getProperty("ssh.forward.from_port")), p.getProperty("ssh.forward.to_host"), Integer.parseInt(p.getProperty("ssh.forward.to_port")));
            } else {
                log.info("ssh forward is closed.");
            }
        } catch (IOException e) {
            log.error("ssh IOException failed.", e);
        } catch (JSchException e) {
            log.error("ssh JSchException failed.", e);
        } catch (Exception e) {
            log.error("ssh settings is failed. skip!", e);
        }
    }

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        log.info("已使用ssh连接");
    }
}

spring:
  datasource:
#  localhost:3307 这里是ssh.forward.from_host:ssh.forward.from_port
    url: jdbc:mysql://localhost:3307/mysql?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8
#  mysql数据库连接用户名
    username: 
#  mysql数据库连接密码
    password: 
    driver-class-name: com.mysql.cj.jdbc.Driver
#   使用了druid去配置及监控连接池和本文无关，可加可不加
    druid:
      initial-size: 2
      min-idle: 1
      max-active: 10
      max-wait: 60000
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 300000
      validation-query: select 'x'
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      pool-prepared-statements: true