java堡垒机连接

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Socket;

public class BastionHostConnector {
    public static void main(String[] args) {
        String host = "your_bastion_host";
        int port = 22; // SSH port
        String username = "your_username";
        String password = "your_password";

        try (Socket socket = new Socket(host, port);
             BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
             BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in))) {

            // Send SSH authentication request
            String authRequest = "SSH-2.0-OpenSSH_7.6p1\r\n";
            socket.getOutputStream().write(authRequest.getBytes());

            // Read response
            String response = reader.readLine();
            System.out.println("Response: " + response);

            // Send username and password
            String credentials = username + ":" + password + "\r\n";
            socket.getOutputStream().write(credentials.getBytes());

            // Read response
            response = reader.readLine();
            System.out.println("Response: " + response);

            // Interactive shell session
            String userInput;
            while ((userInput = stdIn.readLine()) != null) {
                socket.getOutputStream().write((userInput + "\r\n").getBytes());
                response = reader.readLine();
                System.out.println("Response: " + response);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}