java使用SSH连接Linux系统

SSH连接linux系统使我们在开发项目中常用到的，现在留下来，做个记录

package com.log;

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

import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

public class Test8 {
    
    /**
     * 连接linux系统
     * @param args
     */
    public static void main(String[] args) {
        try {
            Connection conn = new Connection("192.168.81.129");
            conn.connect();
            boolean isAuthenticated = conn.authenticateWithPassword("root",
            "123456");
            if (isAuthenticated == false) {
            throw new IOException("Authentication failed");
            }
            Session sess = conn.openSession();
            sess.requestPTY("bash");
            sess.startShell();
            InputStream stdout = new StreamGobbler(sess.getStdout());
            InputStream stderr = new StreamGobbler(sess.getStderr());
            BufferedReader stdoutReader = new BufferedReader(
            new InputStreamReader(stdout));
            BufferedReader stderrReader = new BufferedReader(
            new InputStreamReader(stderr));
            BufferedReader inputReader = new BufferedReader(
            new InputStreamReader(System.in));
            PrintWriter out = new PrintWriter(sess.getStdin());
            String temp = "";
            while (!temp.equals("exit")) {
            System.out.print("[root@vmone ~]#");
            temp = inputReader.readLine();
            out.println(temp);
            out.flush();
            String line = null;
            while ((line = stdoutReader.readLine()) != null) {
            if (line.length() == 0) {// line等于null从来不会发生，导致程序卡在这里
            continue;
            } else{
            System.out.println(line);
            }
            }
            System.out.println("Here is the output from stderr:");
            while (true) {
            line = stderrReader.readLine();
            if (line == null)
            break;
            System.out.println(line);
            }
            }
            System.out.println("ExitCode: " + sess.getExitStatus());
            sess.close();
            conn.close();
            System.out.println("close connection");
            } catch (IOException e) {
            e.printStackTrace(System.err);
            System.exit(2);
            }
    }
    

}

下面截图是次程序运行结果