Java爱好者 - 专注于Java技术1、最直接的方式——使用Robot
方法详解：该方法利用Robat提供的强大桌面操作能力，硬性调用浏览器打开指定网页，并将网页信息保存到本地。
优势：简单易用，不需要任何第三方插件。
缺点：不能同时处理大量数据，技术含量过低，属于应急型技巧（不推荐）。
实现方法：使用如下代码即可。
package cc.javar.util;
import java.awt.AWTException;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import javax.imageio.ImageIO;
public class CutPicture {
public void main() throws MalformedURLException,
IOException, URISyntaxException, AWTException {
// 此方法仅适用于JdK1.6及以上版本
Desktop.getDesktop().browse(
new URL("http://www.baidu.com").toURI());
Robot robot = new Robot();
robot.delay(10000);
Dimension d = new Dimension(Toolkit.getDefaultToolkit().getScreenSize());
int width = (int) d.getWidth();
int height = (int) d.getHeight();
// 最大化浏览器
robot.keyRelease(KeyEvent.VK_F11);
robot.delay(2000);
Image image = robot.createScreenCapture(new Rectangle(0, 0, width,
height));
BufferedImage bi = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = bi.createGraphics();
g.drawImage(image, 0, 0, width, height, null);
// 保存图片
ImageIO.write(bi, "jpg", new File("d:/google"+System.currentTimeMillis()+".jpg"));
}
}
2.比较好用的组建，正在调试，需要JWebBrowser 组件。
package cc.javar.util;
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 com.sun.xml.internal.ws.policy.privateutil.PolicyUtils.IO;
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 ScreenUtils extends JPanel {
public static final long serialVersionUID = 1L;
// 行分隔符
public static final String LS = System.getProperty("line.separator", "/n");
// 文件分割符
public static final 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 ScreenUtils(final String fileName, final String url, final int maxWidth, final int maxHeight) {
super(new BorderLayout());
JPanel webBrowserPanel = new JPanel(new BorderLayout());
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);
try {
// 输出图像
ImageIO.write(image, "jpg", new File(fileName));
} catch (IOException ex) {
ex.printStackTrace();
}
// 退出操作
System.exit(0);
}
}
}
);
add(panel, BorderLayout.SOUTH);
}
public static void Screen(final String fileName,final String url){
NativeInterface.open();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
// SWT组件转Swing组件，不初始化父窗体将无法启动webBrowser
JFrame frame = new JFrame("以DJ组件保存指定网页截图");
// 加载指定页面，最大保存为640x480的截图
frame.getContentPane().add(new ScreenUtils(fileName, url, 1024, 768),BorderLayout.CENTER);
frame.setSize(1024, 768);
// 仅初始化，但不显示
frame.invalidate();
frame.pack();
frame.setVisible(false);
}
});
NativeInterface.runEventPump();
}
}