废话不多说，直接上代码

package com.mlchain.strategy.utils;

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

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
/**
*
*@auther keven
*@date 2018/12/7 14:55
*@desc 远程执行linux服务器
*@since V1.0
*/
public class RemoteCommandUtil {
    public static void main(String[] args) throws Exception {
        JSch jsch = new JSch(); // 创建JSch对象
        String userName = "####";// 用户名
        String password = "####";// 密码
        String host = "####";// 服务器地址
        int port = 22;// 端口号
        //String cmd = "cat /data/hello.txt";// 要运行的命令
        String cmd = "netstat -ntlp";// 要运行的命令
        Session session = jsch.getSession(userName, host, port); // 根据用户名，主机ip，端口获取一个Session对象
        session.setPassword(password); // 设置密码
        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config); // 为Session对象设置properties
        int timeout = 60000000;
        session.setTimeout(timeout); // 设置timeout时间
        session.connect(); // 通过Session建立链接
        ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
        channelExec.setCommand(cmd);
        channelExec.setInputStream(null);
        channelExec.setErrStream(System.err);
        channelExec.connect();
        InputStream in = channelExec.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in, Charset.forName("UTF-8")));
        String buf = null;
        StringBuffer sb = new StringBuffer();
        while ((buf = reader.readLine()) != null) {
            sb.append(buf);
            System.out.println(buf);// 打印控制台输出
        }
        reader.close();
        channelExec.disconnect();
        if (null != session) {
            session.disconnect();
        }
    }
}