java代码对浏览器进行快照

通过java 代码进行浏览器展示内容进行快照，支持有滚动条的页面截屏

项目下载位置。

1.代码如下：

package test;


import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Toolkit;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.File;


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 TestJPanel 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("if(document.readyState==\"complete\"){").append(LS);
//jsDimension.append("alert(\"当前页面已加载完成！\");").append(LS);
jsDimension.append("return width + ':' + height;").append(LS);

//jsDimension.append("}").append(LS);


System.out.println("----------jsDimension："+jsDimension.toString());
}


public TestJPanel(final String url, final int maxWidth, final int maxHeight) {
super(new BorderLayout());
JPanel webBrowserPanel = new JPanel(new BorderLayout());
final String fileName = "D:\\test\\"+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
System.out.println("---------e.getWebBrowser().getLoadingProgress():"+e.getWebBrowser().getLoadingProgress());
if (e.getWebBrowser().getLoadingProgress() == 100) {
try {
String html = webBrowser.getHTMLContent();
System.out.println("-----------------页面代码："+html);
// 具体的秒数需要根据网速等调整   
Thread.sleep(4* 5 * 1000);
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);

System.out.println("----------imageSize.width:"+imageSize.width+"-------------maxWidth:"+maxWidth+"---------imageSize.height:"+imageSize.height+"--------maxHeight:"+maxHeight);
// 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.getHeight();

AffineTransform tx = new AffineTransform();
tx.scale((double) maxWidth / width, (double) maxHeight/ height);
AffineTransformOp op = new AffineTransformOp(tx,AffineTransformOp.TYPE_NEAREST_NEIGHBOR);

image = image.getSubimage(0, 0, width, height);
//缩小图片
//image = op.filter(image, null);
}

// 输出图像
ImageIO.write(image, "jpg", new File(fileName));
} catch (Exception ex) {
ex.printStackTrace();
}
// 退出操作
System.exit(0);
}
}
}


);
add(panel, BorderLayout.SOUTH);


}


public static void init(String host, int port, final String username, final String password) {
 /*Authenticator.setDefault(new Authenticator() {
  protected PasswordAuthentication getPasswordAuthentication() {
   return new PasswordAuthentication(username,new String(password).toCharArray());
  }
 });*/


 System.setProperty("http.proxyType", "4");
 System.setProperty("http.proxyPort", Integer.toString(port));
 System.setProperty("http.proxyHost", host);
 System.setProperty("http.proxySet", "true");
}
 
public static void main(String[] args) {
String url = "http://www.piccnet.com.cn/zhaopin/index.jsp";
 String proxy = "172.16.251.58";
 int port = 3128;
 String username = "71000731";
 String password = "DC664750";
 
 init(proxy, port, username, password);
 
 
System.out.println("---------------start----------");
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");
String url = "";
url = "http://www.piccnet.com.cn/zhaopin/index.jsp";
//url = "http://www.google.com.hk/webhp?hl=zh-CN&tab=Tw";
//url = "http://123.sogou.com/";
// 加载google，最大保存为640x480的截图
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
int width = (int)d.getWidth();
int height = (int) d.getHeight();
TestJPanel test = new TestJPanel (url, width,height);
//TestJPanel test = new TestJPanel("http://www.csdn.net/", 1024,768)
frame.getContentPane().add(test, BorderLayout.CENTER);
frame.setSize(800, 600);
// 仅初始化，但不显示
frame.invalidate();
frame.pack();
frame.setVisible(false);//设置是否可见

System.out.println("---------------end----------");
}
});
NativeInterface.runEventPump();


}


}