Java 之JSch实现ssh远程操作

POM配置

<dependency>
    <groupId>com.jcraftgroupId>
    <artifactId>jschartifactId>
    <version>0.1.55version>
dependency>
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工具类

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

public class SSHTool {

    public static void main(String[] args) throws IOException, JSchException {
        // 执行输入信息
        SSHTool ssh = new SSHTool("", "", "", 22);
        ssh.Connection();
        ssh.executeCmd("ls -ll");
//        ssh.SysWinCmd();
        ssh.disconnection();
        return;
    }

    // 初始化类内变量
    private int sshPort;
    private String username;
    private String password;
    private String hostIp;
    private String charset = "UTF-8";
    private Session session;

    public SSHTool(String user, String password, String hostip, int port) {
        this.username = user;
        this.password = password;
        this.hostIp = hostip;
        this.sshPort = port;
    }

    // 连接服务器
    public void Connection() throws JSchException {
        JSch js = new JSch();
        session = js.getSession(username, hostIp, sshPort);
        session.setPassword(password);
        session.setConfig("StrictHostKeyChecking", "no");
        session.connect();
    }

    // 断开连接
    public void disconnection() {
        if (session != null && session.isConnected()) {
            session.disconnect();
        }
    }

    // 执行Linux命令
    public void executeCmd(String command) throws JSchException, IOException {
        BufferedReader reader = null;
        Channel channel = null;
        System.out.println("**********************************");
        System.out.println("InputCommand:" + "【" + command + "】");
        System.out.println("**********************************");
        channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);
        channel.setInputStream(null);
        ((ChannelExec) channel).setErrStream(System.err);
        channel.connect();
        InputStream in = channel.getInputStream();
        reader = new BufferedReader(new InputStreamReader(in,
                Charset.forName(charset)));
        String buf = null;
        System.out.println("OutPutResult:" + "\n");
        StringBuffer buffer = new StringBuffer();
        while ((buf = reader.readLine()) != null) {
            System.out.println(buf);
            buffer.append(buf);
            buffer.append("\n");
        }
        System.out.println("**********************************");
        // 测试结果可返回做正则匹配进行逻辑判断
        System.out.println("ReturnResult:" + "\n" + buffer.toString());
        channel.disconnect();
    }

    /**
     * 系统输入下发命令
     */
    public void SysWinCmd() {
        BufferedReader bufferreader = new BufferedReader(new InputStreamReader(System.in));
        String inputcmd = "";
        BufferedReader reader = null;
        Channel channel = null;
        try {
            while ((inputcmd = bufferreader.readLine()) != null) {
                channel = session.openChannel("exec");
                ((ChannelExec) channel).setCommand(inputcmd);
                channel.setInputStream(null);
                ((ChannelExec) channel).setErrStream(System.err);
                channel.connect();
                InputStream inputstream = channel.getInputStream();
                reader = new BufferedReader(new InputStreamReader(inputstream, Charset.forName(charset)));
                String buffer = null;
                System.out.println("====================================\n");
                System.out.println("Command" + "【" + inputcmd + "】Result is\n");
                while ((buffer = reader.readLine()) != null) {
                    System.out.println(buffer);
                }
                System.out.println("Command Return Finished\n");
                System.out.println("====================================\n");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            channel.disconnect();
        }
    }

}
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