如何用java程序(JSch)运行远程linux主机上的shell脚本

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

#! /bin/sh
echo "hello $1\n";

$ chmod +x hello.sh

import com.jcraft.jsch.*;

import java.io.IOException;
import java.io.InputStream;

public class RunRemoteScript {
  //远程主机IP
  private static final String REMOTE_HOST = "1.1.1.1";
  //远程主机用户名
  private static final String USERNAME = "";
  //远程主机密码
  private static final String PASSWORD = "";
  //SSH服务端口
  private static final int REMOTE_PORT = 22;
  //会话超时时间
  private static final int SESSION_TIMEOUT = 10000;
  //管道流超时时间(执行脚本超时时间)
  private static final int CHANNEL_TIMEOUT = 5000;

  public static void main(String[] args) {
    //脚本名称及路径，与上文要对上
    String remoteShellScript = "/root/hello.sh";

    Session jschSession = null;

    try {

      JSch jsch = new JSch();
      //SSH授信客户端文件位置，一般是用户主目录下的.ssh/known_hosts
      jsch.setKnownHosts("/home/zimug/.ssh/known_hosts");
      jschSession = jsch.getSession(USERNAME, REMOTE_HOST, REMOTE_PORT);

      // 密码认证
      jschSession.setPassword(PASSWORD);

      // 建立session
      jschSession.connect(SESSION_TIMEOUT);
      //建立可执行管道
      ChannelExec channelExec = (ChannelExec) jschSession.openChannel("exec");

      // 执行脚本命令"sh /root/hello.sh zimug"
      channelExec.setCommand("sh " + remoteShellScript + " zimug");

      // 获取执行脚本可能出现的错误日志
      channelExec.setErrStream(System.err);

      //脚本执行结果输出，对于程序来说是输入流
      InputStream in = channelExec.getInputStream();

      // 5 秒执行管道超时
      channelExec.connect(CHANNEL_TIMEOUT);

      // 从远程主机读取输入流，获得脚本执行结果
      byte[] tmp = new byte[1024];
      while (true) {
        while (in.available() > 0) {
          int i = in.read(tmp, 0, 1024);
          if (i < 0) break;
          //执行结果打印到程序控制台
          System.out.print(new String(tmp, 0, i));
        }
        if (channelExec.isClosed()) {
          if (in.available() > 0) continue;
          //获取退出状态，状态0表示脚本被正确执行
          System.out.println("exit-status: "
             + channelExec.getExitStatus());
          break;
        }
        try {
          Thread.sleep(1000);
        } catch (Exception ee) {
        }
      }

      channelExec.disconnect();

    } catch (JSchException | IOException e) {

      e.printStackTrace();

    } finally {
      if (jschSession != null) {
        jschSession.disconnect();
      }
    }

  }
}

hello zimug

exit-status: 0