java 截屏

每隔一定时间截屏回放:

package RecordAndRun;

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;

/*
 * 每隔一秒钟截一次屏，可以看到动态播放的效果，但想将BufferedImage bImage定义为数组则很快堆溢出
 */

public class Capture extends javax.swing.JFrame implements Runnable {

	/** Creates new form Capture */

	public Capture() {

		initComponents();

		try {

			robot = new Robot();

		} catch (AWTException ex) {

			ex.printStackTrace();

		}

		dim = Toolkit.getDefaultToolkit().getScreenSize();
	}

	/**
	 * This method is called from within the constructor to
	 * 
	 * 
	 * 
	 * initialize the form.
	 * 
	 * 
	 * 
	 * WARNING: Do NOT modify this code. The content of this method is
	 * 
	 * 
	 * 
	 * always regenerated by the Form Editor.
	 */

	// <editor-fold desc=" 生成的代码 " defaultstate="collapsed"></editor-fold>

	private void initComponents() {

		screenCanvas = new java.awt.Canvas();

		setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

		stop = true;

		setResizable(false);

		javax.swing.GroupLayout layout = new javax.swing.GroupLayout(
				getContentPane());

		getContentPane().setLayout(layout);

		layout.setHorizontalGroup(

		layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

		.addComponent(screenCanvas, javax.swing.GroupLayout.PREFERRED_SIZE,
				519, javax.swing.GroupLayout.PREFERRED_SIZE));

		layout.setVerticalGroup(

		layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

		.addComponent(screenCanvas, javax.swing.GroupLayout.PREFERRED_SIZE,
				434, javax.swing.GroupLayout.PREFERRED_SIZE)

		);

		setLocation(100, 100);

		pack();

	}// 

	/** * @param args the command line arguments */

	public static void main(String args[]) {

		final Capture capture = new Capture();

		java.awt.EventQueue.invokeLater(new Runnable() {

			public void run() {

				capture.setVisible(true);

			}

		});

		Thread cutThread = new Thread(capture);

		cutThread.start();



	}

	public void run() {

		stop = false;

		while (!stop) {

			BufferedImage bImage = robot.createScreenCapture(new Rectangle(
					dim.width, dim.height));//这里是用来设定截屏的形状和位置，都是可以自己设定的

			Graphics g = this.screenCanvas.getGraphics();

			g.drawImage(bImage, 0, 0, this);

			try {

				Thread.sleep(1000);

			} catch (InterruptedException ex) {

				ex.printStackTrace();

			}

		}

	}

	private synchronized void stop() {

		stop = true;

	}

	// 变量声明 - 不进行修改

	private java.awt.Canvas screenCanvas;

	// 变量声明结束

	private volatile boolean stop;

	private Robot robot;

	private Dimension dim;

}

截屏并保存图片:

package RecordAndRun;

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

//抓屏并保存

/*******************************************************************
 * 该JavaBean可以直接在其他Java应用程序中调用，实现屏幕的"拍照" This JavaBean is used to snapshot the
 * GUI in a Java application! You can embeded it in to your java application
 * source code, and us it to snapshot the right GUI of the application
 * 
 * @see javax.ImageIO
 * @author liluqun ([email]liluqun@263.net[/email])
 * @version 1.0
 * 
 *****************************************************/
public class GuiCamera {
	private String fileName; // 文件的前缀
	private String defaultName = "GuiCamera";
	static int serialNum = 0;
	private String imageFormat; // 图像文件的格式
	private String defaultImageFormat = "png";
	Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

	/****************************************************************
	 * 默认的文件前缀为GuiCamera，文件格式为PNG格式 The default construct will use the default
	 * Image file surname "GuiCamera", and default image format "png"
	 ****************************************************************/
	public GuiCamera() {
		fileName = defaultName;
		imageFormat = defaultImageFormat;
	}

	/****************************************************************
	 * @param s
	 *            the surname of the snapshot file
	 * @param format
	 *            the format of the image file, it can be "jpg" or "png"
	 *            本构造支持JPG和PNG文件的存储
	 ****************************************************************/
	public GuiCamera(String s, String format) {
		fileName = s;
		imageFormat = format;
	}

	/****************************************************************
	 * 对屏幕进行拍照 snapShot the Gui once
	 ****************************************************************/
	public void snapShot() {
		try {
			// 拷贝屏幕到一个BufferedImage对象screenshot
			BufferedImage screenshot = (new Robot())
					.createScreenCapture(new Rectangle(0, 0,
							(int) d.getWidth(), (int) d.getHeight()));
			serialNum++;
			// 根据文件前缀变量和文件格式变量，自动生成文件名
			String name = fileName + String.valueOf(serialNum) + "."
					+ imageFormat;
			File f = new File(name);
			System.out.print("Save File " + name);
			// 将screenshot对象写入图像文件
			ImageIO.write(screenshot, imageFormat, f);
			System.out.print("..Finished!\n");
		} catch (Exception ex) {
			System.out.println(ex);
		}
	}

	public static void main(String[] args) {
		GuiCamera cam = new GuiCamera("d:\\Hello", "png");// 
		cam.snapShot();
	}
}