JAVA实现网页快照,存为图片格式

 截取的google的效果，将就吧，不是特别好。 但是作为普通的应用，我想这个效果我已经很满意了。

注意，里面的

this.setVisible(true);

这句话如果运行在一些不能显示图形界面的机器上，请屏蔽掉它，不过这样的话，网页里的图片就不能被截取了。

完整的源代码如下：

1. 1. 
      
2. import java.awt.Graphics2D;
3. import java.awt.RenderingHints;
4. import java.awt.geom.AffineTransform;
5. import java.awt.image.BufferedImage;
6. import java.awt.image.ColorModel;
7. import java.awt.image.WritableRaster;
8. import java.io.*;
9. import javax.imageio.*;
10. import javax.swing.*;
11. 
    
12. /**
13. * HTML2JPG,HTML页面转图片的实现方法。
14. *
15. * @author 老紫竹(Java世纪网,java2000.net)
16. */
17. public class Test extends JFrame {
18. 
    
19. public Test(String url, File file) throws Exception {
20. JEditorPane editorPane = new JEditorPane();
21. editorPane.setEditable(false);
22. editorPane.setPage(url);
23. JScrollPane jsp = new JScrollPane(editorPane);
24. getContentPane().add(jsp);
25. this.setLocation(0, 0);
26. this.setVisible(true); // 如果这里不设置可见，则里面的图片等无法截取
27. 
    
28. // 如果不延时，则图片等可能没有时间下载显示
29. // 具体的秒数需要根据网速等调整
30. Thread.sleep(5 * 1000);
31. 
    
32. setSize(10000, 10000);
33. 
    
34. pack();
35. // BufferedImage image = new BufferedImage(editorPane.getWidth(),
36. // editorPane.getHeight(), BufferedImage.TYPE_INT_RGB);
37. BufferedImage image = new BufferedImage(editorPane.getWidth(), editorPane.getHeight(),
38. BufferedImage.TYPE_INT_RGB);
39. Graphics2D graphics2D = image.createGraphics();
40. editorPane.paint(graphics2D);
41. 
    
42. BufferedImage image1 = resize(image, 600, 400);
43. 
    
44. ImageIO.write(image1, "jpg", file);
45. dispose();
46. }
47. 
    
48. public static void main(String[] args) throws Exception {
49. new Test("http://www.google.cn", new File("d:/file.jpg"));
50. }
51. 
    
52. public static BufferedImage resize(BufferedImage source, int targetW, int targetH) {
53. // targetW，targetH分别表示目标长和宽
54. int type = source.getType();
55. BufferedImage target = null;
56. double sx = (double) targetW / source.getWidth();
57. double sy = (double) targetH / source.getHeight();
58. // 这里想实现在targetW，targetH范围内实现等比缩放。如果不需要等比缩放
59. // 则将下面的if else语句注释即可
60. if (sx > sy) {
61. sx = sy;
62. targetW = (int) (sx * source.getWidth());
63. // } else {
64. // sy = sx;
65. // targetH = (int) (sy * source.getHeight());
66. }
67. if (type == BufferedImage.TYPE_CUSTOM) { // handmade
68. ColorModel cm = source.getColorModel();
69. WritableRaster raster = cm.createCompatibleWritableRaster(targetW, targetH);
70. boolean alphaPremultiplied = cm.isAlphaPremultiplied();
71. target = new BufferedImage(cm, raster, alphaPremultiplied, null);
72. } else
73. target = new BufferedImage(targetW, targetH, type);
74. Graphics2D g = target.createGraphics();
75. // smoother than exlax:
76. g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
77. g.drawRenderedImage(source, AffineTransform.getScaleInstance(sx, sy));
78. g.dispose();
79. return target;
80. }
81. }
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