Java远程调用Shell脚本并获取输出信息【推荐】

<dependency>
  <groupId>ch.ethz.ganymed</groupId>
  <artifactId>ganymed-ssh2</artifactId>
  <version>262</version>
</dependency>
<dependency>
  <groupId>commons-io</groupId>
  <artifactId>commons-io</artifactId>
  <version>2.6</version>
</dependency>

boolean isAuthenticated = conn.authenticateWithPassword(userName, passWord);

Session session = conn.openSession();
session.execCommand(“ifconfig”);

InputStream stdout = new StreamGobbler(session.getStdout());
BufferedReader br = new BufferedReader(new InputStreamReader(stdout));

System.out.println(“ExitCode: ” + session.getExitStatus());

session.close();
conn.close();

public class SSHTool {
  private Connection conn;
  private String ipAddr;
  private Charset charset = StandardCharsets.UTF_8;
  private String userName;
  private String password;
  public SSHTool(String ipAddr, String userName, String password, Charset charset) {
    this.ipAddr = ipAddr;
    this.userName = userName;
    this.password = password;
    if (charset != null) {
      this.charset = charset;
    }
  }
  /**
   * 登录远程Linux主机
   *
   * @return 是否登录成功
   */
  private boolean login() {
    conn = new Connection(ipAddr);
    try {
      // 连接
      conn.connect();
      // 认证
      return conn.authenticateWithPassword(userName, password);
    } catch (IOException e) {
      e.printStackTrace();
      return false;
    }
  }
  /**
   * 执行Shell脚本或命令
   *
   * @param cmds 命令行序列
   * @return 脚本输出结果
   */
  public StringBuilder exec(String cmds) throws IOException {
    InputStream in = null;
    StringBuilder result = new StringBuilder();
    try {
      if (this.login()) {
        // 打开一个会话
        Session session = conn.openSession();
        session.execCommand(cmds);
        in = session.getStdout();
        result = this.processStdout(in, this.charset);
        conn.close();
      }
    } finally {
      if (null != in) {
        in.close();
      }
    }
    return result;
  }
  /**
   * 解析流获取字符串信息
   *
   * @param in   输入流对象
   * @param charset 字符集
   * @return 脚本输出结果
   */
  public StringBuilder processStdout(InputStream in, Charset charset) throws FileNotFoundException {
    byte[] buf = new byte[1024];
    StringBuilder sb = new StringBuilder();
//    OutputStream os = new FileOutputStream("./data.txt");
    try {
      int length;
      while ((length = in.read(buf)) != -1) {
//        os.write(buf, 0, c);
        sb.append(new String(buf, 0, length));
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return sb;
  }
  public static void main(String[] args) throws IOException {
    SSHTool tool = new SSHTool("192.168.100.40", "root", "123456", StandardCharsets.UTF_8);
    StringBuilder exec = tool.exec("bash /root/test12345.sh");
    System.out.println(exec);
  }
}