java代码对浏览器进行快照

素颜马尾好姑娘i 2022-09-18 11:56 208阅读 0赞

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。][Link 1]

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();  
  
  
\}  
  
  
\}

[Link 1]: http://download.csdn.net/detail/chen978616649/6593083