由于工作需要，尝试用JWebBrowser网页截图，遇到一些问题。截图是只针对内部网站，由于一个页面里可能在页面加载完成后（我们用的是jQuery(function() {})）可能会发出一个或多个AJAX请求，于是在截图的事件中：
public void loadingProgressChanged(WebBrowserEvent e) {
if (e.getWebBrowser().getLoadingProgress() == 100) {
//截图代码
}
}
请求一个URL，截图代码会被执行多次，也就是e.getWebBrowser().getLoadingProgress()有多次为100了。且当URL为多个时，都不能确定在何时让浏览器转到下一个URL了。
大侠们遇到过这个问题没有呢，都是怎么解决的呢？
------解决方案--------------------------------------------------------
sf~~很遗憾告诉楼主~没做过..
------解决方案--------------------------------------------------------
- Java code
1.import java.awt.BorderLayout; 2.import java.awt.Dimension; 3.import java.awt.FlowLayout; 4.import java.awt.image.BufferedImage; 5.import java.io.File; 6.import java.io.IOException; 7.import javax.imageio.ImageIO; 8.import javax.swing.JFrame; 9.import javax.swing.JPanel; 10.import javax.swing.SwingUtilities; 11.import chrriis.dj.nativeswing.swtimpl.NativeComponent; 12.import chrriis.dj.nativeswing.swtimpl.NativeInterface; 13.import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser; 14.import chrriis.dj.nativeswing.swtimpl.components.WebBrowserAdapter; 15.import chrriis.dj.nativeswing.swtimpl.components.WebBrowserEvent; 16.public class Main extends JPanel { 17. /** 18. * 19. */ 20. private static final long serialVersionUID = 1L; 21. // 行分隔符 22. final static public String LS = System.getProperty("line.separator", "\n"); 23. // 文件分割符 24. final static public String FS = System.getProperty("file.separator", "\\"); 25. //以javascript脚本获得网页全屏后大小 26. final static StringBuffer jsDimension; 27. 28. static { 29. jsDimension = new StringBuffer(); 30. jsDimension.append("var width = 0;").append(LS); 31. jsDimension.append("var height = 0;").append(LS); 32. jsDimension.append("if(document.documentElement) {").append(LS); 33. jsDimension.append( 34. " width = Math.max(width, document.documentElement.scrollWidth);") 35. .append(LS); 36. jsDimension.append( 37. " height = Math.max(height, document.documentElement.scrollHeight);") 38. .append(LS); 39. jsDimension.append("}").append(LS); 40. jsDimension.append("if(self.innerWidth) {").append(LS); 41. jsDimension.append(" width = Math.max(width, self.innerWidth);") 42. .append(LS); 43. jsDimension.append(" height = Math.max(height, self.innerHeight);") 44. .append(LS); 45. jsDimension.append("}").append(LS); 46. jsDimension.append("if(document.body.scrollWidth) {").append(LS); 47. jsDimension.append( 48. " width = Math.max(width, document.body.scrollWidth);") 49. .append(LS); 50. jsDimension.append( 51. " height = Math.max(height, document.body.scrollHeight);") 52. .append(LS); 53. jsDimension.append("}").append(LS); 54. jsDimension.append("return width + ':' + height;"); 55. } 56. //DJNativeSwing组件请于http://djproject.sourceforge.net/main/index下载 57. public Main(final String url, final int maxWidth, final int maxHeight) { 58. super(new BorderLayout()); 59. JPanel webBrowserPanel = new JPanel(new BorderLayout()); 60. final String fileName = System.currentTimeMillis() + ".jpg"; 61. final JWebBrowser webBrowser = new JWebBrowser(null); 62. webBrowser.setBarsVisible(false); 63. webBrowser.navigate(url); 64. webBrowserPanel.add(webBrowser, BorderLayout.CENTER); 65. add(webBrowserPanel, BorderLayout.CENTER); 66. JPanel panel = new JPanel(new FlowLayout(FlowLayout.CENTER, 4, 4)); 67. webBrowser.addWebBrowserListener(new WebBrowserAdapter() { 68. // 监听加载进度 69. public void loadingProgressChanged(WebBrowserEvent e) { 70. // 当加载完毕时 71. if (e.getWebBrowser().getLoadingProgress() == 100) { 72. String result = (String) webBrowser 73. .executeJavascriptWithResult(jsDimension.toString()); 74. int index = result == null ? -1 : result.indexOf(":"); 75. NativeComponent nativeComponent = webBrowser 76. .getNativeComponent(); 77. Dimension originalSize = nativeComponent.getSize(); 78. Dimension imageSize = new Dimension(Integer.parseInt(result 79. .substring(0, index)), Integer.parseInt(result 80. .substring(index + 1))); 81. imageSize.width = Math.max(originalSize.width, 82. imageSize.width + 50); 83. imageSize.height = Math.max(originalSize.height, 84. imageSize.height + 50); 85. nativeComponent.setSize(imageSize); 86. BufferedImage image = new BufferedImage(imageSize.width, 87. imageSize.height, BufferedImage.TYPE_INT_RGB); 88. nativeComponent.paintComponent(image); 89. nativeComponent.setSize(originalSize); 90. // 当网页超出目标大小时 91. if (imageSize.width > maxWidth 92. || imageSize.height > maxHeight) { 93. //截图部分图形 94. image = image.getSubimage(0, 0, maxWidth, maxHeight); 95. /*此部分为使用缩略图 96. int width = image.getWidth(), height = image 97. .getHeight(); 98. AffineTransform tx = new AffineTransform(); 99. tx.scale((double) maxWidth / width, (double) maxHeight 100. / height); 101. AffineTransformOp op = new AffineTransformOp(tx, 102. AffineTransformOp.TYPE_NEAREST_NEIGHBOR); 103. //缩小 104. image = op.filter(image, null);*/ 105. } 106. try { 107. // 输出图像 108. ImageIO.write(image, "jpg", new File(fileName)); 109. } catch (IOException ex) { 110. ex.printStackTrace(); 111. } 112. // 退出操作 113. System.exit(0); 114. } 115. } 116. } 117. ); 118. add(panel, BorderLayout.SOUTH); 119. } 120. public static void main(String[] args) { 121. NativeInterface.open(); 122. SwingUtilities.invokeLater(new Runnable() { 123. public void run() { 124. // SWT组件转Swing组件，不初始化父窗体将无法启动webBrowser 125. JFrame frame = new JFrame("以DJ组件保存指定网页截图"); 126. // 加载指定页面，最大保存为640x480的截图 127. frame.getContentPane().add( 128. new Main("http://blog.csdn.net/cping1982", 640, 480), 129. BorderLayout.CENTER); 130. frame.setSize(800, 600); 131. // 仅初始化，但不显示 132. frame.invalidate(); 133. frame.pack(); 134. frame.setVisible(false); 135. } 136. }); 137. NativeInterface.runEventPump(); 138. } 139.}