java实现远程桌面监控
java里面的Robot类可以完成截图的功能，借助于这点，我尝试着做了一个简陋的桌面监控程序，运行了下，感觉速度还可以，还有很大的优化空间的，比如用udp协议取代tcp等。代码也写的不是很优雅，只在娱乐了。实现原理其实很简单，在被监视者的机器上，运行一个线程，每隔一段时间就自动截图，并把截图压缩发送到指定的机器上；在监视机器上，也是运行一个线程，接收发送过来的图片包，解压，并绘制到当前的窗口上。这样就基本完成了。
public class Server extends Thread {private Dimension screenSize;private Rectangle rectangle;private Robot robot;public Server() {screenSize = Toolkit.getDefaultToolkit().getScreenSize();rectangle = new Rectangle(screenSize);// 可以指定捕获屏幕区域try {robot = new Robot();} catch (Exception e) {e.printStackTrace();System.out.println(e);}}public void run() {ZipOutputStream os = null;Socket socket = null;while (true) {try {socket = new Socket("192.168.1.100", 5001);// 连接远程IPBufferedImage image = robot.createScreenCapture(rectangle);// 捕获制定屏幕矩形区域os = new ZipOutputStream(socket.getOutputStream());// 加入压缩流// os = new ZipOutputStream(new FileOutputStream("C:/1.zip"));os.setLevel(9);os.putNextEntry(new ZipEntry("test.jpg"));JPEGCodec.createJPEGEncoder(os).encode(image);// 图像编码成JPEGos.close();Thread.sleep(50);// 每秒20帧} catch (Exception e) {e.printStackTrace();} finally {if (os != null) {try {os.close();} catch (Exception ioe) {}}if (socket != null) {try {socket.close();} catch (IOException e) {}}}}}public static void main(String[] args) {new Server().start();}}
public class Client extends JFrame {private static final long serialVersionUID = 1L;Dimension screenSize;public Client() {super();screenSize = Toolkit.getDefaultToolkit().getScreenSize();this.setSize(800, 640);Screen p = new Screen();Container c = this.getContentPane();c.setLayout(new BorderLayout());c.add(p, SwingConstants.CENTER);new Thread(p).start();SwingUtilities.invokeLater(new Runnable(){public void run() {setVisible(true);}});}public static void main(String[] args) {new Client();}class Screen extends JPanel implements Runnable {private static final long serialVersionUID = 1L;private Image cimage;public void run() {ServerSocket ss = null;try {ss = new ServerSocket(5001);// 探听5001端口的连接while (true) {Socket s = null;try {s = ss.accept();ZipInputStream zis = new ZipInputStream(s.getInputStream());zis.getNextEntry();cimage = ImageIO.read(zis);// 把ZIP流转换为图片repaint();} catch (Exception e) {e.printStackTrace();} finally {if (s != null) {try {s.close();} catch (IOException e) {e.printStackTrace();}}}}} catch (Exception e) {} finally {if (ss != null) {try {ss.close();} catch (IOException e) {e.printStackTrace();}}}}public Screen() {super();this.setLayout(null);}public void paint(Graphics g) {super.paint(g);Graphics2D g2 = (Graphics2D) g;g2.drawImage(cimage, 0, 0, null);}}}
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