public class ShotsPic extends JPanel {

private static final long serialVersionUID = 1L;

// 行分隔符

final static public String LS = System.getProperty("line.separator", "\n");

// 文件分割符

final static public String FS = System.getProperty("file.separator", "\\");

//以javascript脚本获得网页全屏后大小

final static StringBuffer jsDimension;

static {

jsDimension = new StringBuffer();

jsDimension.append("var width = 0;").append(LS);

jsDimension.append("var height = 0;").append(LS);

jsDimension.append("if(document.documentElement) {").append(LS);

jsDimension.append(" width = Math.max(width, document.documentElement.scrollWidth);").append(LS);

jsDimension.append(" height = Math.max(height, document.documentElement.scrollHeight);").append(LS);

jsDimension.append("}").append(LS);

jsDimension.append("if(self.innerWidth) {").append(LS);

jsDimension.append(" width = Math.max(width, self.innerWidth);").append(LS);

jsDimension.append(" height = Math.max(height, self.innerHeight);").append(LS);

jsDimension.append("}").append(LS);

jsDimension.append("if(document.body.scrollWidth) {").append(LS);

jsDimension.append(" width = Math.max(width, document.body.scrollWidth);").append(LS);

jsDimension.append(" height = Math.max(height, document.body.scrollHeight);").append(LS);

jsDimension.append("}").append(LS);

jsDimension.append("return width + ':' + height;");

}

public ShotsPic( String url) {

super(new BorderLayout());

JPanel webBrowserPanel = new JPanel(new BorderLayout());

final String fileName = "screenShots.jpg";

final JWebBrowser webBrowser = new JWebBrowser(null);

webBrowser.setBarsVisible(false);

webBrowser.navigate(url);

webBrowserPanel.add(webBrowser, BorderLayout.CENTER);

add(webBrowserPanel, BorderLayout.CENTER);

JPanel panel = new JPanel(new FlowLayout(FlowLayout.CENTER, 4, 4));

webBrowser.addWebBrowserListener(new WebBrowserAdapter() {

// 监听加载进度

public void loadingProgressChanged(WebBrowserEvent e) {

// 当加载完毕时

if (e.getWebBrowser().getLoadingProgress() == 100) {

//动态执行JS 最终返回网页的实际的宽度和高度

String result = (String) webBrowser.executeJavascriptWithResult(jsDimension.toString());

System.out.println(result);

int index = result == null ? -1 : result.indexOf(":");

NativeComponent nativeComponent = webBrowser.getNativeComponent();

Dimension originalSize = nativeComponent.getSize();

Dimension imageSize = new Dimension(Integer.parseInt(result.substring(0, index)), Integer.parseInt(result.substring(index + 1)));

imageSize.width = Math.max(originalSize.width,imageSize.width);

imageSize.height = Math.max(originalSize.height,imageSize.height);

System.out.println(imageSize.width);

System.out.println(imageSize.height);

nativeComponent.setSize(imageSize);

BufferedImage image = new BufferedImage(imageSize.width,imageSize.height, BufferedImage.TYPE_INT_RGB);

nativeComponent.paintComponent(image);

//nativeComponent.setSize(imageSize);

// 当网页超出目标大小时

/*if (imageSize.width > maxWidth|| imageSize.height > maxHeight) {

//截图部分图形

image = image.getSubimage(0, 0, maxWidth, maxHeight);

}*/

/*//此部分为使用缩略图

int width = image.getWidth(), height = image

.getHeight();

AffineTransform tx = new AffineTransform();

tx.scale((double) maxWidth / width, (double) maxHeight

/ height);

AffineTransformOp op = new AffineTransformOp(tx,

AffineTransformOp.TYPE_NEAREST_NEIGHBOR);

//缩小

image = op.filter(image, null);

*/

try {

// 输出图像

ImageIO.write(image, "jpg", new File("E:\\"+fileName));

} catch (IOException ex) {

ex.printStackTrace();

}

// 退出操作

System.exit(0);

}

}

}

);

add(panel, BorderLayout.SOUTH);

}

public static void main(String[] args) {

NativeInterface.open();

SwingUtilities.invokeLater(new Runnable() {

public void run() {

JFrame frame = new JFrame("以DJ组件保存指定网页截图");

frame.getContentPane().add(

new ShotsPic("www.qq.com"),

BorderLayout.CENTER);

frame.setSize(1280, 768);

// 仅初始化，但不显示

frame.invalidate();

frame.pack();

frame.setVisible(false);

}

});

NativeInterface.runEventPump();

}

}

程序需要三个包: