用Java实现屏幕截图.docx

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.CROSSHAI