Java运用ganymed-ssh2-build210.jar包远程连接操作linux服务器

（1） 脚本命令的输入，和显示内容的输出

//创建连接，传入一个需要登陆的ip地址和port

Connection conn = new Connection(IP, SERVER_SSH_PORT);

//链接

conn.connect();

//账号，密码验证

boolean isAuthenticated = conn.authenticateWithPassword(admin, pwd1);

if (isAuthenticated == false) {
throw new IOException("密码不正确！");
}

打开一个session，有点象Hibernate的session ，执行你需要的linux 脚本命令 。
Session sess = conn.openSession();

方法一.直接使用封装好的执行命令

sess.execCommand("last");

方法二.使用脚本输入流输入：必须添加一下语句开启：

session.requestDumbPTY();

session.startShell();

即可获取输入输出流

 

InputStream in = sess.getStdout();

InputStream err = sess.getStderr();

OutputStream out = sess.getStdin()

使用下面语句直接吧字符串命令写入即可：

session.getStdin().write((cmd + "\n").getBytes());

（2） 下载和上传文件的字节流：

先创建SCPClient对象，用于上传和下载操作：

SCPClient client = new SCPClient(conn);

下载文件字节流：

private static byte[] getRemoteFileBytes(SCPClient client, String remoteFile) throws IOException {
		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		client.get(remoteFile, bos);
		bos.flush();
		byte[] bytes = bos.toByteArray();
		bos.close();
		return bytes;
	}

上传文件字节流：

client.put(fileBytes, fileName, pathFile);

直接传输文件

 

//服务器端的文件下载到本地的目录下

scpClient.getFile("/home/oracle/RUNNING.txt", "C:/");

//将本地文件上传到服务器端的目录下

scp.putFile("C:/RUNNING.txt", "/home/oracle");

 

输入命令并显示结果的方法参考：

private static boolean sessionExcuteEnd = false;
private static long sessionLogOutTime = System.currentTimeMillis();

/**
	 * 执行命令
	 * @param session
	 * @param cmds
	 * @throws IOException
	 */
	public static void excuteCommands(Session session, String... cmds) throws IOException {
		sessionExcuteEnd = false;
		final InputStream is = new StreamGobbler(session.getStdout());
		new Thread() {
			public void run() {
				BufferedReader br = new BufferedReader(new InputStreamReader(is));
				while (true) {
					try {
						sessionLogOutTime = System.currentTimeMillis();
						String line = br.readLine();
						if (line == null) break;
						System.out.println(line);
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
				try {
					is.close();
					br.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
				System.out.println("END");
				sessionExcuteEnd = true;
			}
		}.start();
		session.requestDumbPTY();
		session.startShell();
		for (String cmd : cmds) {
			//2秒没日志响应，则输出下一步命令
			while (System.currentTimeMillis() < sessionLogOutTime + 2000) {
				try {
					Thread.sleep(2000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
			sessionLogOutTime = System.currentTimeMillis();
			session.getStdin().write((cmd + "\n").getBytes());
		}
		while (!sessionExcuteEnd) {
			if (System.currentTimeMillis() - sessionLogOutTime > 5000) {//5秒未打印出日志，结束
				session.close();		
				break;
			}
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

附加一个简单的实例运用：

public class Update {

	private static int countSession = 0;

	public static void main(String[] args) {
		try {
			// 更新文件准备
			List configlist = Config.loadConfigs();
			File updateFile = new File("./updatefiles/server.zip");
			if (!updateFile.exists()) {
				System.out.println("更新文件server.zip不存在");
				return;
			}
			System.out.println(" 文件最后修改时间:" + new Timestamp(updateFile.lastModified()).toString());
			/**
			 * 读取文件字节流
			 */
			final byte[] updateFileBytes = FileAndByteUtils.readFromFile(updateFile);

			Scanner scan = new Scanner(System.in);
			System.out.println("start ？ (yes/no)");
			if (!scan.nextLine().toLowerCase().equals("yes")) {
				System.out.println("exit");
				System.exit(0);
			}
			// 开始
			for (final String[] configs : configlist) {
				// configs[0]: id ;configs[1] : ip
				// 开始连接
				if (configs == null) {
					return;
				}
                /**连接*/
				final Connection conn = new Connection(configs[1], Config.PORT);
				conn.connect();
				/**账号验证*/
                boolean isAuthenticated =    
                    conn.authenticateWithPassword(Config.ADMIN,Config.PWD);
				if (isAuthenticated == false) {
					System.out.println("密码错误");
					throw new IOException("Authentication failed.");
				}
				countSession++;
				// 打开session
				final Session session = conn.openSession();
				// 上传文件
				SCPClient client = new SCPClient(conn);
				client.put(updateFileBytes, "xlsbz_server.zip", "/app/mhfx/");
				System.out.println(configs[0] + "区服务器更新数据上传 完毕~~~~");
				new Thread(new Runnable() {
					public void run() {
						try {
							session.requestDumbPTY();
							session.startShell();
							OutputStream fout = session.getStdin();
							// 输入命令
							System.out.println(configs[0] + " ：START");
							fout.write(("bash xlsbz_server/bin/telnet.sh" + "\n").getBytes());
							Thread.sleep(1000);
							fout.write(("freeze" + "\n").getBytes());
							Thread.sleep(60000);
							fout.write(("quit" + "\n").getBytes());
							Thread.sleep(60000);
							// 完成关闭Session和连接
							session.close();
							Thread.sleep(1000);
							conn.close();
							Thread.sleep(1000);
							countSession--;
							System.out.println(configs[0] + " ： END");
						} catch (IOException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						} catch (InterruptedException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
				}).start();
				final InputStream fin = session.getStdout();
				new Thread(new Runnable() {
					@Override
					public void run() {
						BufferedReader br = new BufferedReader(new InputStreamReader(fin));
						String line = null;
						try {
							while ((line = br.readLine()) != null) {
								System.out.println(configs[0] + ": " + line);
								if (line.contains("quit")) {
									continue;
								}
								if ((line.contains("command not found") && !line.startsWith("-bash: A:"))
										|| line.contains("no cmd")) {
									System.out.println("出错 command not found");
									System.exit(0);
								}
							}
						} catch (IOException e) {
							e.printStackTrace();
						}
					}
				}).start();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		while (true) {
			if (countSession == 0) {
				break;
			}
			System.out.println("正在运行中");
			try {
				Thread.sleep(30000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		System.out.println("finsh");
	}

}

 

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下载地址： Ganymed SSH-2 for Java