介绍几个java把网页报存为图片的框架

来源：互联网发布：java运行环境编辑：程序博客网时间：2024/05/15 12:28

首先说一下。java在图像这一块非常弱。用java实现java截图倒不难，原理吗就是把当前屏幕存成一个图，然后获取鼠标拉去的想去位置然后把截取的图保存到panel里边，再生成图片即可：示例代码就不展示了，网上很多。下边说几个将网页保存为图片的框架：

①html2image

网上炒这个还不少呢。我说这个就是原声的java代码进行封装的一个jar包。效果非常差，代码就不贴了网上好多。

②cobra

如果你不知道这个的话，你应该听说过lobobrowser，纯java实现的浏览器，测试了下，除了启动慢的要死其他还可以。

这个代码截取还是不错的，不说了直接上代码：

package htmlToImage;import java.awt.image.BufferedImage;import java.awt.image.RenderedImage;import java.io.File;import javax.imageio.ImageIO;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.SwingUtilities;import org.lobobrowser.html.gui.HtmlPanel;import org.lobobrowser.html.test.SimpleHtmlRendererContext;import org.lobobrowser.html.test.SimpleUserAgentContext;public class CobraTest {public static void main(String[] args) throws Exception {JFrame window = new JFrame();HtmlPanel panel = new HtmlPanel();window.getContentPane().add(panel);window.setSize(600, 400);window.setVisible(true);new SimpleHtmlRendererContext(panel, new SimpleUserAgentContext()).navigate("http://jobs.zhaopin.com/377931819252715.htm?ssidkey=y&ss=201&ff=03");System.out.println("10");Thread.sleep(10000);BufferedImage image = new BufferedImage(panel.getWidth(),panel.getHeight(), BufferedImage.TYPE_INT_ARGB);// paint the editor onto the imageSwingUtilities.paintComponent(image.createGraphics(), panel,new JPanel(), 0, 0, image.getWidth(), image.getHeight());// save the image to fileImageIO.write((RenderedImage) image, "png", new File("html.png"));System.out.println("www");}}

但是这个框架应该有个限制，css3应该支持不了。

③cssbox

这个非常不错。如果网站不做故意限制的话，截图非常完美。。。

package htmlToImage;import java.io.File;import java.io.FileOutputStream;import org.fit.cssbox.demo.ImageRenderer;public class CssBox {public static void main(String[] args) throws Exception {ImageRenderer render = new ImageRenderer();System.out.println("kaishi");String url = "http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=AU&NR=2014200109A1&KC=A1&FT=D&ND=3&date=20140821&DB=EPODOC&locale=en_EP";FileOutputStream out = new FileOutputStream(new File("D:"+File.separator+"html.png"));render.renderURL(url, out, ImageRenderer.TYPE_PNG);System.out.println("OK");}}

④java原生代码

package htmlToImage;import java.awt.image.BufferedImage;import java.awt.image.RenderedImage;import java.io.File;import java.net.URL;import javax.imageio.ImageIO;import javax.swing.JEditorPane;import javax.swing.JPanel;import javax.swing.SwingUtilities;/** * 原理就是在现在的awt或者swing上显示网页然后将内容保存为一个图片 * 没办法控制延迟啊。 * @author zlqiao * */public class JavaCoreApi {public static void main(String[] args) throws Exception {//load the webpage into the editor//JEditorPane ed = new JEditorPane(new URL("http://www.google.com"));JEditorPane ed = new JEditorPane(new URL("http://www.baidu.com"));System.out.println("10");Thread.sleep(10000);ed.setSize(1000,1000);//create a new imageBufferedImage image = new BufferedImage(ed.getWidth(), ed.getHeight(),                                        BufferedImage.TYPE_INT_ARGB);//paint the editor onto the imageSwingUtilities.paintComponent(image.createGraphics(),                               ed,                               new JPanel(),                               0, 0, image.getWidth(), image.getHeight());//save the image to fileImageIO.write((RenderedImage)image, "png", new File("html.png"));System.out.println("ok");}}

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