Java调用本地cmd,shell命令，远程调用linux执行命令

Java调用本地cmd,shell命令，远程调用linux执行命令

一.本地调用cmd命令

 @Test
    public void testCmd()throws Exception{
    
    
        String cmd="cmd /c date"; //命令的前面必须要有cmd /c
        execCmd(cmd);
    }

    public static void execCmd(String cmd){
    
    
        try{
    
    
            Runtime rt = Runtime.getRuntime();
            //执行命令, 最后一个参数，可以使用new File("path")指定运行的命令的位置
            Process proc = rt.exec(cmd,null,null);  
            InputStream stderr =  proc.getInputStream();
            InputStreamReader isr = new InputStreamReader(stderr,"GBK");
            BufferedReader br = new BufferedReader(isr);
            String line="";
            while ((line = br.readLine()) != null) {
    
     // 打印出命令执行的结果
                System.out.println(line);
            }
        }catch (Exception e){
    
    
            e.printStackTrace();
        }

    }

二.本地调用Linux命令

    @Test
    public void testCmd()throws Exception{
    
    
        String cmd="/bin/sh -c date"; //命令的前面必须要有/bin/sh -c
        execCmd(cmd);

    }

    public static void execCmd(String cmd){
    
    
        try{
    
    
            Runtime rt = Runtime.getRuntime();
            //执行命令, 最后一个参数，可以使用new File("path")指定运行的命令的位置
            Process proc = rt.exec(cmd,null,null);  
            InputStream stderr =  proc.getInputStream();
            InputStreamReader isr = new InputStreamReader(stderr,"GBK");
            BufferedReader br = new BufferedReader(isr);
            String line="";
            while ((line = br.readLine()) != null) {
    
     // 打印出命令执行的结果
                System.out.println(line);
            }
        }catch (Exception e){
    
    
            e.printStackTrace();
        }

    }

三.远程调用Linux执行命令

jar包下载

http://central.maven.org/maven2/com/jcraft/jsch/0.1.54/jsch-0.1.54.jar

或者maven引用

<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.54</version>
</dependency>

package com.configserver.uitis;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
/**
 * @Author:刘德安
 * @Data:2020/11/6 16:46
 */
public class SSHHelper {
    
    
    /**
     * 远程 执行命令并返回结果调用过程 是同步的（执行完才会返回）
     * @param host  主机名
     * @param user  用户名
     * @param psw   密码
     * @param port  端口
     * @param command   命令
     * @return
     */
    public static String exec(String host,String user,String psw,int port,String command){
    
    
        StringBuffer sb= new StringBuffer();
        Session session =null;
        ChannelExec openChannel =null;
        try {
    
    
            JSch jsch=new JSch();
            session = jsch.getSession(user, host, port);
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");//跳过公钥的询问
            session.setConfig(config);
            session.setPassword(psw);
            session.connect(5000);//设置连接的超时时间
            openChannel = (ChannelExec) session.openChannel("exec");
            openChannel.setCommand(command); //执行命令
            int exitStatus = openChannel.getExitStatus(); //退出状态为-1，直到通道关闭
            System.out.println(exitStatus);

            // 下面是得到输出的内容
            openChannel.connect();
            InputStream in = openChannel.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            String buf = null;
            while ((buf = reader.readLine()) != null) {
    
    
                sb.append(buf+"\n");
            }
        } catch (JSchException | IOException e) {
    
    
            sb.append(e.getMessage()+"\n");
        }finally{
    
    
            if(openChannel!=null&&!openChannel.isClosed()){
    
    
                openChannel.disconnect();
            }
            if(session!=null&&session.isConnected()){
    
    
                session.disconnect();
            }
        }
        return sb.toString();
    }


    public static void main(String args[]){
    
    
        String exec = exec("192.168.XXX.XX", "用户", "密码", 22, "命令");
        System.out.println(exec);
    }
}