java实现远程桌面的实例代码
作者：一艳倾华
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java实现远程桌面的实例代码
控制端将鼠标事件传递到服务端
服务端拿到鼠标事件之后传输到客户端
客户端拿到鼠标事件之后，通过robot类即可完成，并且截屏将图片发给服务器，服务器再发给控制端
被我简化之后得到
//先介绍一下robot类的简单使用
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.InputEvent;
/**
* 使用robot
* @author 哑元
*
*/
public class RobotTest {
public static void main(String[] args) throws AWTException {
Robot r = new Robot();
r.mouseMove(300, 500);//鼠标移动
r.mousePress(InputEvent.BUTTON1_MASK ); //鼠标按下
r.mouseRelease(InputEvent.BUTTON1_MASK);//鼠标松开
r.keyPress((int)'A'); //键盘按下 (int)'A'表示将A转换成键盘对应的key
r.keyRelease((int)'A'); //键盘松开
}
}
//屏幕抓取
import java.awt.AWTException;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.WindowConstants;
/**
* 抓取本地桌面图片
* @author 哑元
*
*/
public class ScreenTest {
public static void main(String[] args) throws AWTException, InterruptedException {
Robot robot = new Robot();
JFrame jframe = new JFrame();
jframe.setSize(1200, 700);
JLabel label = new JLabel();
jframe.add(label);
//四个参数x y width height
jframe.setVisible(true);
jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE );
//构建一个死循环动态截取
while(true){
BufferedImage image = robot.createScreenCapture(new Rectangle(0,0,1366,768));//截取屏幕
label.setIcon(new ImageIcon(image));
Thread.sleep(50);
}
}
}
//远程控制原理讲解
//分为server端和client端，
//原本server端只作为转发，作为演示，就不写转发
//也就是client端控制server端E
/**
* 这里我采用的是，在client端也就是操控端，接收到server端发送过来的screen之后，然后发送鼠标事件过去
* 然后再用robot处理
* 传输方式用socket+io即可处理
* 屏幕截取和图片压缩采用了robot的屏幕截取功能和jdk自带的图片编码器，将其转换成一个字节数组
* 发送给server端之后，robot通过io+socket可以直接拿到object对象，强制转换成InputEvent(keyEvent和MouseEvent都继承)之后
* 通过判断event类型，分别处理即可，这里在服务端需要用到两个线程，一个是屏幕截取和发送给客户端，一个是用来监听客户端
* 传递过来的事件
*/
//下面是具体实现代码
//server主程
import java.awt.AWTException;
import java.awt.Event;
import java.awt.Robot;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.ServerSocket;
import java.net.Socket;
/**
* 服务端
* @author 哑元
*
*/
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket server = new ServerSocket(80);
System.out.println("服务器已经正常启动");
Socket socket = server.accept();//等待接收请求,阻塞方法
System.out.println("有客户端连接");
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
//将客户端与服务器端链接的输出流交个ImageThread处理
ImageThread imageThread = new ImageThread(dos);
new Thread(imageThread).start();
new Thread(new EventThread(new ObjectInputStream(socket.getInputStream()))).start();
}
}
/**
* 用来处理接收过来的鼠标事件或者键盘事件
*/
class EventThread implements Runnable{
private ObjectInputStream ois;
private Robot robot;
public EventThread(ObjectInputStream ois) {
this.ois = ois;
}
@Override
public void run() {
try {
robot = new Robot();
while(true){
InputEvent event = (InputEvent)ois.readObject();//得知由客户端传递过来的是一个object对象
actionEvent(event);//处理事件
}
} catch (AWTException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
ois.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 事件处理，用来判断事件类型，并用robot类执行
* @param event
*/
public void actionEvent(InputEvent event){
System.out.println(event);
if(event instanceof KeyEvent){
KeyEvent e = (KeyEvent)event;
int type = e.getID();//拿到事件类型
if(type==Event.KEY_PRESS){
robot.keyPress(e.getKeyCode());
}else if(type == Event.KEY_RELEASE){
robot.keyRelease(e.getKeyCode());
}
}else if(event instanceof MouseEvent){
MouseEvent e = (MouseEvent)event;
int type = e.getID();
if(type == Event.MOUSE_MOVE){
robot.mouseMove(e.getX(),e.getY());
}else if(type == Event.MOUSE_DOWN){
robot.mousePress(getMouseKey(type));
}else if(type == Event.MOUSE_UP){
robot.mouseRelease(getMouseKey(type));
}else if(type == Event.MOUSE_DRAG){
robot.mouseMove(e.getX(), e.getY());//鼠标拖动
}
}
}
/**
* 返回鼠标的真正事件，鼠标时间不能直接处理，需要进过转换
* @return
*/
public int getMouseKey(int button){
if(button == MouseEvent.BUTTON1){//鼠标左键
return InputEvent.BUTTON1_MASK;
}else if(button == MouseEvent.BUTTON2){//鼠标右键
return InputEvent.BUTTON2_MASK;
}else if(button == MouseEvent.BUTTON3){//滚轮
return InputEvent.BUTTON3_MASK;
}else{
return 0;
}
}
}
//屏幕截取器和发送器，这里需要拿到socket的out流
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import com.sun.image.codec.jpeg.*;
/**
* 用来将图片数据发送
* @author 哑元
*
*/
public class ImageThread implements Runnable{
DataOutputStream dos = null; //数据输出流
public ImageThread(DataOutputStream dos){
this.dos = dos;
}
@Override
public void run() {
try {
Robot robot = new Robot();
//截取整个屏幕
Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
/*
int width = (int)dimension.getWidth();
int height = (int)dimension.getWidth();
Rectangle rec = new Rectangle(0,0,width,height);
*/
Rectangle rec = new Rectangle(dimension);
BufferedImage image;
byte imageBytes[];
while(true){
image = robot.createScreenCapture(rec);
imageBytes = getImageBytes(image);
dos.writeInt(imageBytes.length);
dos.write(imageBytes);
dos.flush();
Thread.sleep(50); //线程睡眠
}
} catch (AWTException e) {
e.printStackTrace();
} catch (ImageFormatException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}finally{
try {
if(dos!= null) dos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 压缩图片
* @param 需要压缩的图片
* @return 压缩后的byte数组
* @throws IOException
* @throws ImageFormatException
*/
public byte[] getImageBytes(BufferedImage image) throws ImageFormatException, IOException{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
//压缩器压缩，先拿到存放到byte输出流中
JPEGImageEncoder jpegd = JPEGCodec.createJPEGEncoder(baos);
//将iamge压缩
jpegd.encode(image);
//转换成byte数组
return baos.toByteArray();
}
}
--------------------------------------------------------------------------------------
//client端，用来接收creen图片和发送鼠标事件
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.WindowConstants;
/**
* 客户端
* @author 哑元
*
*/
public class Client {
public static void main(String args[]) throws UnknownHostException, IOException{
Socket s = new Socket("127.0.0.1",80);
DataInputStream dis = new DataInputStream(s.getInputStream());
ObjectOutputStream oos = new ObjectOutputStream(s.getOutputStream());
ClientWindow cw = new ClientWindow(oos);
byte[] imageBytes;
while(true){
imageBytes = new byte[dis.readInt()]; //先拿到传过来的数组长度
dis.readFully(imageBytes); //所有的数据存放到byte中
cw.repainImage(imageBytes);
}
}
}
/**
* 客户端窗体
* @author 哑元
*
*/
class ClientWindow extends JFrame{
private ObjectOutputStream oos;
private JLabel label;
//重写背景图片方法
public void repainImage(byte [] imageBytes){
label.setIcon(new ImageIcon(imageBytes));
this.repaint();
}
public ClientWindow(ObjectOutputStream oos){
this.oos = oos;
this.setTitle("远程控制程序");
label = new JLabel();
JPanel p = new JPanel();
p.add(label);
JScrollPane scroll = new JScrollPane(p);//给p面板添加滚动条
this.add(scroll);
this.setSize(1024,768);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setVisible(true);
this.addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyReleased(KeyEvent e) {
sendEvent(e);
}
@Override
public void keyPressed(KeyEvent e) {
sendEvent(e);
}
});
label.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent e) {
sendEvent(e);
}
@Override
public void mousePressed(MouseEvent e) {
sendEvent(e);
}
@Override
public void mouseClicked(MouseEvent e) {
sendEvent(e);
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
});
}
public void sendEvent(InputEvent event){
try {
oos.writeObject(event);
} catch (IOException e) {
e.printStackTrace();
}
}
}
以上这篇java实现远程桌面的实例代码就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。