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Java JDK1.4 的Robot对象，该对象可以完成屏幕图像截取操作，控制鼠标，键盘，如此便可以轻而易举地实现远程服务器的控制。本文向大家介绍如何用Java Robot对象实现远程服务器的控制，并给出了相应的Java源代码。实现原理：
（1）被控端通过Robot截取桌面图像通过socket通信传给主控端。 （2）主控端显示被控端桌面，并且把基于被控端图像上的键盘，鼠标事件通过socket通信传给被控端。 （3）被控端响应主控端的鼠标键盘事件。实现详解：
（一）主控端和被控端通过UDP进行指令交互 /*-主控端向被控端发送指令-*/ String command = ...; //指令 InetAddress inet = ...; //被控端地址 int port = ...; //端口 byte sp[] = command.getBytes(); DatagramPacket packet = new DatagramPacket(sp,sp.length(),inet,port); DatagramSocket sd = new DatagramSocket(); sd.send(packet); /*-被控端接收指令-*/ DatagramSocket stockUDP = ...; DatagramPacket packet = ...; stockUDP.receive(packet); String message=new String(packet.getData(),0,packet.getLength()); //得到指令本程序中用到的指令
public static final String Command_Connection = "connection" ; //建立连接 public static final String Command_Disconnection = "disconnection";//断开连接 public static final String Command_Screen = "screen"; //显示被控端屏幕 public static final String Command_Control="control"; //建立控制套接（二）被控端向主控端传递图像
/*-被控端获取屏幕图像-*/ Rectangle rect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());//全屏区域 Robot robot=new Robot(); BufferedImage image = robot.createScreenCapture(rect); /*-开启图像传送线程-*/ Socket socket = ...; OutputStream out = socket.getOutputStream(); BufferedImage image ; JPEGImageEncoder encoder =JPEGCodec.createJPEGEncoder(out); ...... public void run(){ while(true){ image = ...; //获取屏幕图像 encoder.encode(image); //发送图像给主控端 Thread.sleep(Environment.IMAGE_GETTIME); //图像采集时间间隔 } } /*-主控端图像接收线程-*/ JPEGImageDecoder de = JPEGCodec.createJPEGDecoder(socket.getInputStream()); BufferedImage image = null ; ...... public void run(){ while(true){ image = de.decodeAsBufferedImage(); if (image != null) { /*显示图像*/ } } }（三）图像显示，鼠标，键盘监听
/*-图像显示-*/ public class ControlledScreenPanel extends JPanel implements MouseMotionListener, MouseListener,MouseWheelListener ,KeyListener{ private BufferedImage image ;public void setBufferedImage(BufferedImage bi) { //更新图像
image = bi; Dimension d = new Dimension(image .getWidth(this),image .getHeight(this)); setPreferredSize(d); revalidate(); repaint(); }public void paintComponent(Graphics g) { //绘制图像
super.paintComponent(g); Dimension d = getSize(); g.setColor(getBackground()); g.fillRect(0, 0, d.width, d.height); if (image != null) { g.drawImage(image , 0, 0, this); } } } /*-鼠标，键盘监听-*/ private MainControlSocket control ; //发送鼠标，键盘事件到被控端 public void mouseDragged(MouseEvent e) { control.sendControlledAction(e); }public void mouseMoved(MouseEvent e) {
control.sendControlledAction(e); }//--------------------------------------------------------------------------
public void mouseClicked(MouseEvent e) { requestFocus();//单击获得焦点 }public void mousePressed(MouseEvent e) { //鼠标按下
control.sendControlledAction(e); }public void mouseReleased(MouseEvent e) { //鼠标释放
control.sendControlledAction(e); }public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
//--------------------------------------------------------------------------
public void mouseWheelMoved (MouseWheelEvent e){ //滑轮滚动
control.sendControlledAction(e); }//--------------------------------------------------------------------------
public void keyTyped(KeyEvent e) {}
public void keyPressed(KeyEvent e) { //键盘按下
control.sendControlledAction(e); }public void keyReleased(KeyEvent e) { //键盘释放
control.sendControlledAction(e); } /*-发送鼠标，键盘事件到被控端-*/ class MainControlSocket { private Socket socket = null; private ObjectOutputStream out = null; //事件对象发送封装 ...... public void sendControlledAction(InputEvent event) { try { out.writeObject(event); } catch (IOException e) { e.printStackTrace(); } } ...... }（三）被控端接收，响应键盘鼠标事件
private Socket socket = ...; private ObjectInputStream in = new ObjectInputStream(socket.getInputStream()); private Robot action = new Robot(); public void run(){ ...... while(true){ Object obj = in.readObject(); //获得鼠标键盘事件 if (obj != null) { handleEvent( (InputEvent) obj); //处理鼠标键盘事件 } } ...... }private void handleEvent(InputEvent event){
MouseEvent mevent = null ; //鼠标事件 MouseWheelEvent mwevent = null ;//鼠标滚动事件 KeyEvent kevent = null ; //键盘事件 int mousebuttonmask = -100; //鼠标按键switch (event.getID()){
case MouseEvent.MOUSE_MOVED : //鼠标移动 mevent = ( MouseEvent )event ; action.mouseMove( mevent.getX() , mevent.getY() ); break ;case MouseEvent.MOUSE_PRESSED : //鼠标键按下
mevent = ( MouseEvent ) event; action.mouseMove( mevent.getX() , mevent.getY() ); mousebuttonmask = getMouseClick( mevent.getButton() ); if(mousebuttonmask != -100) action.mousePress(mousebuttonmask); break;case MouseEvent.MOUSE_RELEASED : //鼠标键松开
mevent = ( MouseEvent ) event; action.mouseMove( mevent.getX() , mevent.getY() ); mousebuttonmask = getMouseClick( mevent.getButton() );//取得鼠标按键 if(mousebuttonmask != -100) action.mouseRelease( mousebuttonmask ); break ;case MouseEvent.MOUSE_WHEEL : //鼠标滚动
mwevent = ( MouseWheelEvent ) event ; action.mouseWheel(mwevent.getWheelRotation()); break ;case MouseEvent.MOUSE_DRAGGED : //鼠标拖拽
mevent = ( MouseEvent ) event ; action.mouseMove( mevent.getX(), mevent.getY() ); break ;case KeyEvent.KEY_PRESSED : //按键
kevent = ( KeyEvent ) event; action.keyPress( kevent.getKeyCode() ); break ;case KeyEvent.KEY_RELEASED : //松键
kevent= ( KeyEvent ) event ; action.keyRelease( kevent.getKeyCode() ); break ;default: break ;
} }private int getMouseClick(int button) { //取得鼠标按键
if (button == MouseEvent.BUTTON1) //左键 ,中间键为BUTTON2 return InputEvent.BUTTON1_MASK; if (button == MouseEvent.BUTTON3) //右键 return InputEvent.BUTTON3_MASK; return -100; } ...... }转载地址：http://ahlpi.baihongyu.com/