将截屏图片保存到本地路径：

package com.test;import java.awt.AWTException;import java.awt.Dimension;import java.awt.HeadlessException;import java.awt.Rectangle;import java.awt.Robot;import java.awt.Toolkit;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;public class MainRun {	/**	 * @param args	 */	public static void main(String[] args) {				try {			Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();			BufferedImage screenshot = (new Robot()).createScreenCapture(new Rectangle(0,					0,(int)dimension.getWidth(),(int)dimension.getHeight()));			File file = new File("C:/screen.jpg");			ImageIO.write(screenshot, "jpg", file);		} catch (HeadlessException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (AWTException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}	}}

web版，将显示实时的图片作为流返回到页面

/**	 * 得到当前屏幕截图	 * 	 * @param request	 * @param response	 */	private void getScreenImg(HttpServletRequest request, HttpServletResponse response) throws Exception {		Thread.sleep(3000);		response.setContentType("image/jpg");		ServletOutputStream sos = response.getOutputStream();		// 禁止页面缓存		response.setHeader("Pragma", "No-cache");		response.setHeader("Cache-Control", "no-cache");		response.setDateHeader("Expires", 0);		// 创建内存图象并获得其图形上下文		Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();		BufferedImage screenshot = (new Robot())				.createScreenCapture(new Rectangle(0, 0, (int) dimension						.getWidth(), (int) dimension.getHeight()));		// 将图像输出到客户端		ByteArrayOutputStream bos = new ByteArrayOutputStream();		ImageIO.write(screenshot, "jpg", bos);		byte[] buf = bos.toByteArray();		response.setContentLength(buf.length);		sos.write(buf);		bos.close();		sos.close();	}