JAVA实现屏幕抓图远程桌面控制

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JAVA实现屏幕抓图远程桌面控制

2013年09月04日 ⁄ 综合 ⁄ 共 4200字 ⁄ 字号小中大 ⁄ 评论关闭

主要使用的是java.util.Robot类来捕获屏幕,可以实现对屏幕一个矩形区域的捕获,通过这个类,我们也可以实现一个远程桌面控制的程序。

package com.qiu.util; 
import java.io.*; 
import java.net.*; 
import javax.swing.*; 
import java.awt.*; 
import java.awt.event.*; 
import java.awt.image.*; 
import javax.imageio.*; 
import java.io.*; 
/**@Author Qiu_BaiChao 
*一个简单的屏幕抓图 
* 
**/ 
public class ScreenCapture { 
//test main 
public static void main(String[] args) throws Exception{ 
String userdir = System.getProperty("user.dir"); 
File tempFile = new File("d:","temp.png"); 
ScreenCapture capture = ScreenCapture.getInstance(); 
capture.captureImage(); 
JFrame frame = new JFrame(); 
JPanel panel = new JPanel(); 
panel.setLayout(new BorderLayout()); 
JLabel imagebox = new JLabel(); 
panel.add(BorderLayout.CENTER,imagebox); 
imagebox.setIcon(capture.getPickedIcon()); 
capture.saveToFile(tempFile); 
capture.captureImage(); 
imagebox.setIcon(capture.getPickedIcon()); 
frame.setContentPane(panel); 
frame.setSize(400,300); 
frame.show(); 
System.out.println("Over"); 
} 
private ScreenCapture() { 
try{ 
robot = new Robot(); 
} 
catch(AWTException e) { 
System.err.println("Internal Error: " + e); 
e.printStackTrace(); 
} 
JPanel cp = (JPanel)dialog.getContentPane(); 
cp.setLayout(new BorderLayout()); 
labFullScreenImage.addMouseListener(new MouseAdapter() { 
public void mouseReleased(MouseEvent evn) { 
isFirstPoint = true; 
pickedImage = fullScreenImage.getSubimage(recX,recY,recW,recH); 
dialog.setVisible(false); 
} 
}); 
labFullScreenImage.addMouseMotionListener(new MouseMotionAdapter() { 
public void mouseDragged(MouseEvent evn) { 
if(isFirstPoint) { 
x1 = evn.getX(); 
y1 = evn.getY(); 
isFirstPoint = false; 
} 
else { 
x2 = evn.getX(); 
y2 = evn.getY(); 
int maxX = Math.max(x1,x2); 
int maxY = Math.max(y1,y2); 
int minX = Math.min(x1,x2); 
int minY = Math.min(y1,y2); 
recX = minX; 
recY = minY; 
recW = maxX-minX; 
recH = maxY-minY; 
labFullScreenImage.drawRectangle(recX,recY,recW,recH); 
} 
} 
public void mouseMoved(MouseEvent e) { 
labFullScreenImage.drawCross(e.getX(),e.getY()); 
} 
}); 
　　 
　　 
cp.add(BorderLayout.CENTER,labFullScreenImage); 
dialog.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR)); 
dialog.setAlwaysOnTop(true); 
dialog.setMaximumSize( 
Toolkit.getDefaultToolkit().getScreenSize()); 
dialog.setUndecorated(true); 
dialog.setSize(dialog.getMaximumSize()); 
dialog.setModal(true); 
} 
//Singleton Pattern 
public static ScreenCapture getInstance() { 
return defaultCapturer; 
} 
/**捕捉全屏慕*/ 
public Icon captureFullScreen() { 
fullScreenImage = robot.createScreenCapture(new Rectangle( 
Toolkit.getDefaultToolkit().getScreenSize())); 
ImageIcon icon = new ImageIcon(fullScreenImage); 
return icon; 
} 
/**捕捉屏幕的一个矫形区域 
*/ 
public void captureImage() { 
fullScreenImage = robot.createScreenCapture(new Rectangle( 
Toolkit.getDefaultToolkit().getScreenSize())); 
ImageIcon icon = new ImageIcon(fullScreenImage); 
labFullScreenImage.setIcon(icon); 
dialog.setVisible(true); 
} 
/**得到捕捉后的BufferedImage*/ 
public BufferedImage getPickedImage() { 
return pickedImage; 
} 
/**得到捕捉后的Icon*/ 
public ImageIcon getPickedIcon() { 
return new ImageIcon(getPickedImage()); 
} 
/**储存为一个文件,为PNG格式 
*@deprecated 
*replaced by saveAsPNG(File file) 
**/ 
@Deprecated 
public void saveToFile(File file) throws IOException{ 
ImageIO.write(getPickedImage(),defaultImageFormater,file); 
} 
/**储存为一个文件,为PNG格式*/ 
public void saveAsPNG(File file) throws IOException { 
ImageIO.write(getPickedImage(),"png",file); 
} 
/**储存为一个JPEG格式图像文件*/ 
public void saveAsJPEG(File file) throws IOException { 
ImageIO.write(getPickedImage(),"JPEG",file); 
} 
/**写入一个OutputStream*/ 
public void write(OutputStream out) throws IOException{ 
ImageIO.write(getPickedImage(),defaultImageFormater,out); 
} 
//singleton design pattern 
private static ScreenCapture defaultCapturer = new ScreenCapture(); 
private int x1,y1,x2,y2; 
private int recX,recY,recH,recW; //截取的图像 
private boolean isFirstPoint = true; 
private BackgroundImage labFullScreenImage = new BackgroundImage(); 
private Robot robot; 
private BufferedImage fullScreenImage; 
private BufferedImage pickedImage; 
private String defaultImageFormater = "png"; 
private JDialog dialog = new JDialog(); 
} 
/**显示图片的Label*/ 
class BackgroundImage extends JLabel{ 
public void paintComponent(Graphics g) { 
super.paintComponent(g); 
g.drawRect(x,y,w,h); 
String area = Integer.toString(w)+" * "+ Integer.toString(h); 
g.drawString(area,x+(int)w/2-15,y+(int)h/2); 
g.drawLine(lineX,0,lineX,getHeight()); 
g.drawLine(0,lineY,getWidth(),lineY); 
} 
public void drawRectangle(int x,int y,int width,int height) { 
this.x = x; 
this.y = y; 
h = height; 
w = width; 
repaint(); 
} 
public void drawCross(int x,int y) { 
lineX = x; 
lineY = y; 
repaint(); 
} 
int lineX,lineY; 
int x,y,h,w; 
}

【上篇】逻辑数组应用，图像数据转换
【下篇】[转] 你没资本，没背景，就要努力学习，努力奋斗！转给自己。

作者: numeral

该日志由 numeral 于11年前发表在综合分类下，最后更新于 2013年09月04日.
转载请注明: JAVA实现屏幕抓图远程桌面控制 | 学步园 +复制链接

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