纯Java实现整个网页截图项目源代码

import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.SwingUtilities; import chrriis.dj.nativeswing.swtimpl.NativeComponent; import chrriis.dj.nativeswing.swtimpl.NativeInterface; import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser; import chrriis.dj.nativeswing.swtimpl.components.WebBrowserAdapter; import chrriis.dj.nativeswing.swtimpl.components.WebBrowserEvent; public class Main 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 Main(final String url, final int maxWidth, final int maxHeight) { super(new BorderLayout()); JPanel webBrowserPanel = new JPanel(new BorderLayout()); final String fileName = System.currentTimeMillis() + ".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) { String result = (String) webBrowser .executeJavascriptWithResult(jsDimension.toString()); 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 + 50); imageSize.height = Math.max(originalSize.height, imageSize.height + 50); nativeComponent.setSize(imageSize); BufferedImage image = new BufferedImage(imageSize.width, imageSize.height, BufferedImage.TYPE_INT_RGB); nativeComponent.paintComponent(image); nativeComponent.setSize(originalSize); // 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 �