HTML轉圖片

import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.WritableRaster;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
/**
* HTML2JPG,HTML頁面轉圖片的實現方法。
*/
public class Test extends JFrame {
public Test(String url, File file) throws Exception {
 JEditorPane editorPane = new JEditorPane();
editorPane.setEditable(false);
editorPane.setPage(url);
 JScrollPane jsp = new JScrollPane(editorPane);
getContentPane().add(jsp);
 this.setLocation(0, 0);
 Thread.sleep(5 * 1000);
 setSize(10000, 10000);
pack();
 // BufferedImage image = new BufferedImage(editorPane.getWidth(),
 // editorPane.getHeight(), BufferedImage.TYPE_INT_RGB);
 BufferedImage image = new BufferedImage(editorPane.getWidth(), editorPane.getHeight(),
BufferedImage.TYPE_INT_RGB);
 Graphics2D graphics2D = image.createGraphics();
editorPane.paint(graphics2D);
 BufferedImage image1 = resize(image, 450, 600);
 ImageIO.write(image1,"jpg", file);
dispose();
}
public static void main(String[] args) throws Exception {
 new Test("http://www.google.cn", new File("d:/file.jpg"));
}
public static BufferedImage resize(BufferedImage source, int targetW, int targetH) {
 // targetW，targetH分別表示目標長和寬
 int type = source.getType();
 BufferedImage target = null;
 double sx = (double) targetW / source.getWidth();
 double sy = (double) targetH / source.getHeight();
 // 這裏想實如今targetW，targetH範圍內實現等比縮放。若是不須要等比縮放
 // 則將下面的if else語句註釋便可
 if (sx > sy) {
 sx = sy;
 targetW = (int) (sx * source.getWidth());
 // } else {
 // sy = sx;
 // targetH = (int) (sy * source.getHeight());
}
 if (type == BufferedImage.TYPE_CUSTOM) { // handmade
 ColorModel cm = source.getColorModel();
 WritableRaster raster = cm.createCompatibleWritableRaster(targetW, targetH);
 boolean alphaPremultiplied = cm.isAlphaPremultiplied();
 target = new BufferedImage(cm, raster, alphaPremultiplied, null);
 } else
 target = new BufferedImage(targetW, targetH, type);
 Graphics2D g = target.createGraphics();
 // smoother than exlax:
 g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
 g.drawRenderedImage(source, AffineTransform.getScaleInstance(sx, sy));
g.dispose();
 return target;
}
}