java实现连接linux（上传文件，执行shell命令等）

1 导入pom

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

2 编写配置类

package com.budwk.app.atest;import com.budwk.app.common.config.AppException;
import com.jcraft.jsch.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.util.IOUtils;
import org.nutz.ioc.loader.annotation.IocBean;import java.io.*;
import java.util.ArrayList;
import java.util.List;@Config
@Slf4j
public class JSchSessionComponent {private static final String ip = "172.168.1.1";private static final int port = 22;private static final String userName = "root";private static final String password = "123456";/*** jsch创建连接* @return*/public Session getJSchSession(){JSch jSch = new JSch();Session session = null;try {//创建连接session = jSch.getSession(userName,ip,port);session.setPassword(password);//是否使用密钥登录，一般默认为nosession.setConfig("StrictHostKeyChecking", "no");boolean connected = session.isConnected();if (connected) {return session;}//启用连接session.connect(15222200);log.info("服务器连接成功");return session;}catch (Exception e){log.error("服务器连接失败", e);throw new AppException("服务器连接失败");}}//jsch关闭连接public void closeJSchSession(Session session){log.info("关闭连接开始");if (session != null) {session.disconnect();log.info("关闭连接结束");}}public boolean uploadFile(Session sshSession, File file) {log.info("文件正在上传中，请等待......");boolean isSuccess = false;InputStream is = null;try {Channel channel = sshSession.openChannel("sftp");channel.connect();ChannelSftp sftp = (ChannelSftp) channel;sftp.cd("/data/www/wk-mini/");//上传时接文件的服务器的存放目录String fileName =file.getName();is = new FileInputStream(file);sftp.put(is, fileName, ChannelSftp.OVERWRITE);//有重名文件覆盖log.info("文件上传结束");isSuccess = true;} catch (Exception e) {log.error("linux upload File error:", e);throw new AppException("文件上传失败");} finally {IOUtils.closeQuietly(is);}return isSuccess;}public List<String> executeShell(Session session , List<String> commands){log.info("项目开始启动，请等待");//用来存放命令的返回值List<String> cmdResult = new ArrayList<>();for (String command : commands) {Channel channel = null;try {//创建执行通道channel = session.openChannel("exec");//设置命令((ChannelExec) channel).setCommand(command);//连接通道channel.connect();//读取通道的输出InputStream in = channel.getInputStream();BufferedReader reader = new BufferedReader(new InputStreamReader(in));//存放命令的执行结果，如果结果有很多行，则每次line的值不同String line;//lines用来拼接line结果StringBuffer lines = new StringBuffer();while ((line = reader.readLine()) != null) {//去除头尾的空格line.trim();lines = lines.append(line);}//如果命令执行没有返回值，则直接输出没有返回值if (String.valueOf(lines).equals("")){cmdResult.add("命令["+command+"]执行成功,但没有返回值");}else {//否则将每行返回直接存入到list中cmdResult.add(String.valueOf(lines));}reader.close();channel.disconnect();} catch (Exception e) {log.error("启动失败", e);throw new AppException("启动失败");}}log.info("项目启动已结束..................");return cmdResult;}
}

3 测试

package com.budwk.app.atest;import com.jcraft.jsch.*;
import org.nutz.ioc.loader.annotation.IocBean;import java.io.*;
import java.util.ArrayList;
import java.util.List;@IocBean
public class TestDemo {public static void main(String[] args) {// 1 先建立连接JSchSessionComponent jSchSessionComponent = new JSchSessionComponent();Session session = jSchSessionComponent.getJSchSession();File file = new File("E:\\target\\111.jar");
//        File file = new File("E:\\target\\1.txt");boolean b = jSchSessionComponent.uploadFile(session, file);if (b) {System.out.println("文件上传成功");}jSchSessionComponent.closeJSchSession(session);//        TestDemo t = new TestDemo();
//        t.executeSheel();}private void executeSheel() {JSchSessionComponent jSchSessionComponent = new JSchSessionComponent();Session session = jSchSessionComponent.getJSchSession();// 执行命令List<String> cmds = new ArrayList<>();cmds.add("cd /data/www/;chmod u+x start.sh;./start.sh");jSchSessionComponent.executeShell(session, cmds);}//用来执行命令//Session表示传递连接对话,commands表示传递命令集合}

4 start.sh文件内容体

# sh  ./monitorstart.sh
# sh  ./jobstart.sh#!/bin/sh
RESOURCE_NAME=wkProject.jartpid=`ps -ef|grep $RESOURCE_NAME|grep -v grep|grep -v kill|awk '{print $2}'`
if [ ${tpid} ]; then
echo 'Stop Process...'
kill -15 $tpid
fi
sleep 5
tpid=`ps -ef|grep $RESOURCE_NAME|grep -v grep|grep -v kill|awk '{print $2}'`
if [ ${tpid} ]; then
echo 'Kill Process!'
kill -9 $tpid
else
echo 'Stop Success!'
fitpid=`ps -ef|grep $RESOURCE_NAME|grep -v grep|grep -v kill|awk '{print $2}'`
if [ ${tpid} ]; thenecho 'App is running.'
elseecho 'App is NOT running.'
firm -f tpid
rm -f wkProject.log
nohup java -jar ./$RESOURCE_NAME >>wkProject.log  2>&1 &
echo $! > tpid
echo Start Success!