让远程Linux主机执行它的Shell脚本

假如有一台知道ip的主机，上面放着你想执行的shell脚本，你想在windows下写这个程序，
并调试，你打算怎么做？

Maven

        
            com.jcraft
            jsch
            0.1.55
        
    

复制到pom.xml中，这个第三方库的官网：

http://www.jcraft.com/jsch/examples/KnownHosts.java.html

工具类

这是我写的一个小插件，里面有丰富的注释。
RemoteShellScriptor不用修改，它是一个工具类：

package com.oneslide.www.system;

import com.jcraft.jsch.*;
import java.io.IOException;
import java.io.InputStream;



public class RemoteShellScriptExecutor {

    private final Session session;
    private final Channel channel;
    private final static int CONNECT_TIME_OUT=30000;
    private byte[] sshChannelBuffer=new byte[1024];

    /**
     * init some parameters
     * including user,host,password to login destination host
     * **/

    public RemoteShellScriptExecutor(String user,String host,String password) throws JSchException {
        //open session
        this.session=new JSch().getSession(user,host,22);
        //set password
        session.setPassword(password);


        /**insecure debug for skipping host authenticity checking**/
        session.setConfig("StrictHostKeyChecking","no");


        //connect to remote server
        session.connect(RemoteShellScriptExecutor.CONNECT_TIME_OUT);
        //connect to exec Channel
       

    }

    /**
     * this method automatically connect to Channel at the beginning,
     * and disconnect after method ends
     *
     * @return
     *    String Buffer contains the result of command issued
     *
     * @param
     *    String command  command issued
     * **/
    public String issueCommand(String command) throws JSchException, IOException {
 		//open a channel every time a command is issued,channel is disposable	
 		this.channel=session.openChannel("exec");
        //set command issued
        ((ChannelExec)this.channel).setCommand(command);

        InputStream inputStream=channel.getInputStream();

        //connect to channel
        channel.connect();

        StringBuffer stringBuffer=new StringBuffer();

        while(true){
            while(inputStream.available()>0){
                int byteRead=inputStream.read(this.sshChannelBuffer,0,1024);
                stringBuffer.append(new String(this.sshChannelBuffer,0,byteRead));
                if (byteRead<0){
                    break;
                }

            }
            //channel closed while some byte haven't been write to StringBuffer
            if (this.channel.isClosed()){
                 if (inputStream.available()>0){
                     continue;
                 }
                System.out.println("Exit Code"+this.channel.getExitStatus());
                 break;
            }
        }

        channel.disconnect();
        return stringBuffer.toString();
    }


    public void disconnect(){
        this.session.disconnect();
    }



}

用法

使用上面工具类的方法是：

public class Main {
    public static void main(String[] args) {
        try {
            RemoteShellScriptExecutor remoteShellScriptExecutor=new RemoteShellScriptExecutor("root","10.0.7.54","xxx");
            // 这里写入你想要执行的shell命令，再shell命令行里写什么，这里就写什么
            //初始目录是用户根目录
            String result=remoteShellScriptExecutor.issueCommand("ls");

            System.out.println(result);
            remoteShellScriptExecutor.disconnect();
        } catch (JSchException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

CMD输入ssh ip_you_want_connect来将主机fingprint加入本机已知主机列表