Java网页截图

import java.awt.AWTException;
import java.awt.Desktop;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.imageio.ImageIO;

/**
 * 截取网页。
 * @author __LuckyStar
 * @date 20110416
 */
public class CaptureBrower {
	
	/**
	 * 截取指定网页
	 * @param url 网址
	 * @param folderName 图片保存目录
	 * @throws IOException
	 * @throws URISyntaxException
	 * @throws AWTException
	 */
	private void capture(String url,String folderName) throws IOException, URISyntaxException, AWTException {
		// 打开浏览器
		Desktop.getDesktop().browse(new URI(url));
		Robot robot = new Robot();
		// 最大化浏览器
		robot.keyRelease(KeyEvent.VK_F11);
		int width = Toolkit.getDefaultToolkit().getScreenSize().width;
		int height = Toolkit.getDefaultToolkit().getScreenSize().height;
		// 延迟2S截取屏幕
		robot.delay(2000);
		// 截取屏幕
		Image image = robot.createScreenCapture(new Rectangle(width, height));
		// 保存图片
		String fileName = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
		ImageIO.write((RenderedImage) image, "jpg", new File(folderName+File.separator+fileName+".jpg"));
	}
	
	/**
	 * 判断图片保存目录是否存在。<br>
	 * 不存在则创建。
	 */
	private void checkFolder(String folderName) {
		File dir = new File(folderName);
		if (!dir.exists() || !dir.isDirectory()) {
			dir.mkdirs();
		}
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String folderName = "images";
		CaptureBrower cb = new CaptureBrower();
		cb.checkFolder(folderName);
		try {
			cb.capture("http://edu.codepub.com/2010/0825/25343.php", folderName);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (URISyntaxException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (AWTException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}