java通过控制鼠标实现屏幕广播的方法

本文实例讲述了java通过控制鼠标实现屏幕广播的方法。分享给大家供大家参考。具体分析如下：

在前面一篇《java实现屏幕共享功能实例分析》中提到截取屏幕时是没鼠标，为了看到教师端界面上的鼠标，可以在截取屏幕的时候，把鼠标绘制到每一张截图上去，但是由于截图的时候是一张张截取的，所以看到的鼠标难免会有点卡，之前写了java鼠标操控小程序，可以通过这种方式来看到鼠标的演示。

实现的方式也挺简单的，前面两篇文章分别实现了鼠标控制和不带鼠标的屏幕分享功能，把这两个结合一下就ok了，下面简单分析下。

服务端，将SendScreenImg和SendMouseMessage看作两个工具类，分别监听不同的端口，他们两个都实现了Thread类，我们用线程池ExecutorService类控制他们。

使用了两个端口，因为暂时还不知道该如何吧鼠标信息和图片的信息一起发送，或许可以把图片转换成字节数组的形式，把鼠标的坐标放在数组前面，不过这样的话鼠标可能也会不连贯，因为传送鼠标坐标的速度会比传图片的要快一些，嗯，有空再试试。

客户端类比上面就是了。

下面是代码：

服务端：

主程序：

代码如下:

/*
 * 屏幕广播类，调用了两个工具类：发送截屏信息的类和发送鼠标的信息类，利用了线程池。
 */
public class BroderCast {
    public  static void main(String[] args)
    {
        new BroderCast();
        System.out.println("开始");
    }
    public BroderCast()
    {
        ExecutorService exector = Executors.newFixedThreadPool(2);
        exector.execute(new SendScreenImg());
        exector.execute(new SendMouseMessage());
    }
}

发送截图代码：

代码如下:

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import javax.imageio.ImageIO;
 
/*
 * 工具类：发送教师端截屏信息给学生端，没有鼠标信息，使用了8002号端口
 *      可以在发送的图片上面组件绘制鼠标的信息，从而实现在学生端界面上见到鼠标信息，暂未实现该功能
 *             
 */
public  class SendScreenImg extends Thread
{
    public int serverPort=8002;
    private ServerSocket serverSocket;
    private Robot robot;
    public  Dimension screen;
    public Rectangle rect ;
    private Socket socket;
    public static void main(String args[])
    {
        new SendScreenImg().start();
    }
    
    public void changeServerPort(int serverPort)
    {
        if(this.serverPort == serverPort) return ;
        try{
            this.serverSocket.close();    //有必要先关闭当前端口
            this.serverPort = serverPort;
            serverSocket = new ServerSocket(this.serverPort);
            serverSocket.setSoTimeout(8000000);
        }catch(Exception e){}
        
    }
    
    //构造方法  开启套接字连接      机器人robot   获取屏幕大小
    public SendScreenImg()
    {
        try {
            serverSocket = new ServerSocket(getServerPort());
            serverSocket.setSoTimeout(864000000);
            robot = new Robot();
        } catch (Exception e) {
            e.printStackTrace();
        }
        screen = Toolkit.getDefaultToolkit().getScreenSize();  //获取主屏幕的大小
        rect = new Rectangle(screen);                          //构造相应大小的矩形
        
    }
    @Override
    public void run()
    {
        //实时等待接收截屏消息
        while(true){
            try {
                socket = serverSocket.accept();
                ZipOutputStream zip = new ZipOutputStream(new DataOutputStream(socket.getOutputStream()));
                zip.setLevel(9);     //设置压缩级别
                try{
                    BufferedImage img = robot.createScreenCapture(rect);
                    zip.putNextEntry(new ZipEntry("test.jpg"));
                    ImageIO.write(img, "jpg", zip);
                    if(zip!=null)zip.close();
                    System.out.println("学生端口已经连接");
                } catch (IOException ioe) {
                    System.out.println("被控端：disconnect");
                }
            } catch (IOException ioe) {
             System.out.println("连接出错");
            } finally {
                if (socket != null) {
                    try {
                        socket.close();
                    } catch (IOException e) {
                    }
                }
            }
        }
    }
}

发送鼠标信息：

代码如下:

/*
 * 工具类：获取鼠标的信息并且发送给学生端
 */
public class SendMouseMessage extends Thread{
    private int OPERATE_PORT = 8001;
    private ServerSocket server;
    private Socket socket;
    private String operateStr;
    public static void main(String[] args)
    {
        new SendMouseMessage().start();
    }
    public SendMouseMessage(){
        try {
            server = new ServerSocket(OPERATE_PORT);
            //JOptionPane.showMessageDialog(null, "已经开始监听");
        } catch (IOException e1) {
            e1.printStackTrace();
        }      
    }
    //多线程  在无线的循环中监听客户端的
    public void run()
    {
        while(true){
            Point point = MouseInfo.getPointerInfo().getLocation();  //
            operateStr ="Movemouse,"+point.x+","+point.y;
            try {
                socket = server.accept();
                socket.setSoTimeout(1000000);
                DataOutputStream output =new DataOutputStream(socket.getOutputStream());
                output.write(operateStr.getBytes());
                output.flush();   //刷行输出流，并且使所有缓冲的输出字节写出
                output.close();   //关闭输出流且释放资源
    
                System.out.println("INFO：  "+operateStr);
            } catch (IOException e) {
                System.out.println("已经停止连接");
                break;   //断开连接的时候就停止无线循环
            }
        }
    }
}

客户端：

主程序：

代码如下:

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
 
import com.Tool.OperateMouse;
import com.Tool.ReceiveImages;
 
public class ReceiveBroderCast {
    public ExecutorService exector;
    public static String IP="202.216.60.9";
    
    public static void main(String[] args)
    {
        new ReceiveBroderCast(IP);
    }
    
    public ReceiveBroderCast(String IP) {
        exector = Executors.newFixedThreadPool(2);
        exector.execute(new ReceiveImages(IP));
        exector.execute(new OperateMouse(IP));
    }
}

接收截图代码：

代码如下:

/*
 * ly  2014-11-20
 * 该类用于接收教师端的屏幕信息，不包括鼠标
 * 使用socket()
 */
public  class ReceiveImages extends  Thread{
    public BorderInit frame ;
    public Socket socket;
    public String IP;
    
    public static void main(String[] args){
        new ReceiveImages("202.216.60.7").start();
    }
    public ReceiveImages(String IP)
    {
        frame=new BorderInit();
        this.IP=IP;
        
    }
    public void run() {
        while(frame.getFlag()){
            System.out.println("已经连接"+(System.currentTimeMillis()/1000)%24%60+"秒");
            try {
                socket = new Socket(IP,8002);
                DataInputStream ImgInput = new DataInputStream(socket.getInputStream());
                ZipInputStream imgZip = new ZipInputStream(ImgInput);
                Image img = null;
                try{
                    imgZip.getNextEntry();   //到Zip文件流的开始处
                    img = ImageIO.read(imgZip); //按照字节读取Zip图片流里面的图片
                    frame.jlbImg.setIcon(new ImageIcon(img));
                    frame.validate();
                }catch (IOException e) {e.printStackTrace();}
                
                try{
                    imgZip.close();
                } catch (IOException e) {
                    System.out.println("连接断开");
                }
                try {
                    TimeUnit.MILLISECONDS.sleep(50);// 接收图片间隔时间
                } catch (InterruptedException ie) {
                    ie.printStackTrace();
                }      
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    socket.close();
                } catch (IOException e) {} 
            }      
        }  
    }
}
class BorderInit extends JFrame
{
    private static final long serialVersionUID = 1L;
    public JLabel jlbImg;
    private boolean flag;
    public boolean getFlag(){
        return this.flag;
    }
    public BorderInit()
    {
        this.flag=true;
        this.jlbImg = new JLabel();
        this.setTitle("远程监控--IP:"  + "--主题:" );
        this.setSize(400, 400);
        //this.setUndecorated(true);
        //this.setAlwaysOnTop(true);  //始终在最前面
        this.add(jlbImg);
        this.setLocationRelativeTo(null);
        this.setExtendedState(Frame.MAXIMIZED_BOTH);
        this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        this.setVisible(true);
        this.validate();
    
        //窗口关闭事件
        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                flag=false;
                BorderInit.this.dispose();
                System.out.println("窗体关闭");
                System.gc();    //垃圾回收
            }
        });
    }
}

接收鼠标信息并控制鼠标移动：

代码如下:

import java.awt.AWTException;
import java.awt.Robot;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
 
import javax.swing.JOptionPane;
 
/*
 * 学生端   控制鼠标和教师端一致
 * 该类  负责接收鼠标的信息  并且用robot.mouseMove()函数控制鼠标移动 
 */
public class OperateMouse extends Thread{
    public static void main(String[] args)
    {
        new OperateMouse("202.116.60.7").start();
    }
    private Socket socket;
    public String IP;
    private int OPERATE_PORT = 8001;
    private Robot robot;
    
    public OperateMouse(String IP)
    {
        this.IP = IP;
    }
    public void run() {
        while(true){
            try {
                socket = new Socket(IP,OPERATE_PORT);
                robot = new Robot();
                //获取鼠标移动的信息
                DataInputStream dataIn = new DataInputStream(socket.getInputStream());       
                String info="";
                int r;
                while((r=dataIn.read()) != -1){
                    info +=""+(char)r;   //把字节数组中所有元素都变为字符型
                }
                dataIn.close();
                System.out.println("数据流断开"+info);
                if(info!=null){
                        String s[] = info.trim().split(",");
                        if("Movemouse".equals(s[0].trim()));
                        {
                            if (s.length == 3) {
                                int x = Integer.parseInt(s[1].trim());
                                int y = Integer.parseInt(s[2].trim());
                                System.out.println("输出鼠标的信息"+x+"  "+ y);
                                robot.mouseMove(x, y);
                            }
                        }
                    }
            } catch (IOException e) {
                System.out.println("已断开连接");
                break;
            } catch (AWTException e) {
                e.printStackTrace();
            }
        }
    }
}

希望本文所述对大家的Java程序设计有所帮助。