spring boot 连接Linux 工具类

对于连接Linux的工具类，我们可以使用JSch库。下面是一个连接Linux服务器并执行命令的示例代码：

public class SSHUtil {
    private String host;
    private String username;
    private String password;

    private JSch jsch;
    private Session session;

    public SSHUtil(String host, String username, String password) {
        this.host = host;
        this.username = username;
        this.password = password;
        jsch = new JSch();
    }

    public void connect() throws JSchException {
        session = jsch.getSession(username, host, 22);
        session.setPassword(password);
        session.setConfig("StrictHostKeyChecking", "no");
        session.connect();
    }

    public void disconnect() {
        if (session != null) {
            session.disconnect();
        }
    }

    public String executeCommand(String command) throws JSchException, IOException {
        ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
        InputStream in = channelExec.getInputStream();
        channelExec.setCommand(command);
        channelExec.connect();
        StringBuilder result = new StringBuilder();
        byte[] buffer = new byte[1024];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(buffer, 0, 1024);
                if (i < 0) {
                    break;
                }
                result.append(new String(buffer, 0, i));
            }
            if (channelExec.isClosed()) {
                if (in.available() > 0) {
                    continue;
                }
                result.append("exit-status: ").append(channelExec.getExitStatus());
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ignore) { }
        }
        channelExec.disconnect();
        return result.toString();
    }
}

你可以通过创建SSHUtil对象，传入服务器地址、用户名和密码来连接Linux服务器，并执行需要的命令。例如，下面是在Linux上执行ls命令的示例代码：

public static void main(String[] args) throws JSchException, IOException {
    SSHUtil ssh = new SSHUtil("192.168.0.1", "root", "password");
    ssh.connect();
    String result = ssh.executeCommand("ls");
    System.out.println(result);
    ssh.disconnect();
}

希望这个例子对你有所帮助！