java使用jsch远程链接linux执行命令

Posted 2022-04-21

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

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;

/**

• java 使用jsch远程链接linux 执行命令
• @author myz

• */
  public class JSchUtil
  private static JSch jsch;
  private static Session session;

  /**

  • 首先连接服务器
  • @param user
  • @param passwd
  • @param host

  • @throws JSchException
    */
    public static void connect(String user, String passwd, String host) throws JSchException
    jsch = new JSch();
    session = jsch.getSession(user, host, 22);
    session.setPassword(passwd);
    java.util.Properties config = new java.util.Properties();
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);

    session.connect();
    

  /**

  • 连接服务器后执行相应的linux命令
  • @param command
  • @param user
  • @param passwd
  • @param host
  • @throws JSchException
    */
    public static void execCmd(String command, String user, String passwd, String host) throws JSchException
    connect(user, passwd, host);
    BufferedReader reader = null;
    Channel channel = null;
    try
    while (command != null)
    channel = session.openChannel("exec");
    ((ChannelExec) channel).setCommand(command);
    channel.setInputStream(null);
    ((ChannelExec) channel).setErrStream(System.err);
    channel.connect();
    //获取流
    InputStream in = channel.getInputStream();
    reader = new BufferedReader(new InputStreamReader(in));
    String buf = null;
    while ((buf = reader.readLine()) != null)
    System.out.println(buf);//打印返回的结果日志
    
    
    catch (IOException e)
    e.printStackTrace();
    catch (JSchException e)
    e.printStackTrace();
    finally //最后流和连接的关闭
    try
    reader.close();
    catch (IOException e)
    e.printStackTrace();
    
    channel.disconnect();
    session.disconnect();