6024b2fb6e36001b19ca9d8cdf62cf01

《ajax编程技术与实例》的所有的案例

package com.bam;

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Random;

import javax.imageio.ImageIO;

public class ScreenCapture implements Runnable {

    static Robot robot = null;
    static Toolkit toolkit = Toolkit.getDefaultToolkit();
	
    static Thread runner = null;
    static int capturew = 800;
    static int captureh = 600;
    static int chunks = 3;
    static int capturebh = captureh / chunks ;
    static int capturebw = capturew / chunks ;
    
    static HashMap Images = new HashMap();
    
    public ScreenCapture(int width, int height,int chunks) {
    	
    	capturew = width;
        captureh = height;
        this.chunks = chunks;
        
        // 计算每个块的长宽；
        capturebh = captureh / chunks ; 
        capturebw = capturew / chunks ;
    	
        this.start();
        
    }
    
    
    public void start() {
		if (runner == null) {

			for (int y=0; y < chunks; y++) {
				for (int x=0; x < chunks; x++) {
					
				  Images.put(new Integer(chunks*y+x).toString(), new Chunk());			
			
				}
				}
			
			runner = new Thread(this);
			runner.start();
		}
	}
    
    public static HashMap getImages() {
    	
      return Images;
    	
    }
        
    public static int getChunks() {
    	
        return chunks;
      	
      }
    
	public void run() {
		
		if (robot==null) robot = createRobot();
		
		BufferedImage image = null;
		ByteArrayOutputStream os = null;
		Chunk c = null;
		
		while(true) {
		
			try {
			
				if (AJAX_Desktop.logdebug) System.out.println("Captured..");	
					
				for (int y=0; y < chunks; y++) {
				for (int x=0; x < chunks; x++) {
				
				  // 捕获Screen的图像
				  image = robot.createScreenCapture(new Rectangle(x*capturebw, y*capturebh, capturebw, capturebh));
				  os = new ByteArrayOutputStream();
				  // 将该图片写入输出流
				  ImageIO.write(image, "png", os);
				  // 将输出流的内容生成字节数组		
				  byte[] imageStorage = os.toByteArray();
				
				  c = (Chunk) Images.get(new Integer(chunks*y+x).toString());
				  c.setData(os.toByteArray());
			
				}
			}
			  
			
			} catch (Exception E) {
				
				E.printStackTrace();
			}
		
		}
		
	}
	
	// 创建Robot类，用以在本机平台上生成输入事件
   private static Robot createRobot() {
		
		try {
		
		 return new Robot();
			
		} catch(Exception e) {	
		   e.printStackTrace();	
		}
		
		return null;
	}
	

}