import com.lowagie.text.pdf.BaseFont;

import org.xhtmlrenderer.pdf.ITextFontResolver;

import org.xhtmlrenderer.pdf.ITextRenderer;

import java.io.File;

import java.io.FileOutputStream;

import java.io.OutputStream;

public class HtmlToPDF {

    public static void main(String[] args) throws Exception {

        htmlToPdf("C://Users//Administrator//Desktop//20181001.pdf","C://Users//Administrator//Desktop//xse//newFile.html");

    }

    /**

     * 把URL转换为PDF

     * @param outputFile

     *            ， 示例：/data/fs/inspector/BJ20150522001.pdf

     * @param url

     *            ，示例：http :xxxx

     * @return

     * @throws Exception

     */

    public static void htmlToPdf(String outputFile, String url)throws Exception {

        try{

            OutputStream os = new FileOutputStream(outputFile);

            ITextRenderer renderer = new ITextRenderer();

            // 如果携带图片则加上以下代码,将图片标签转换为Itext自己的图片对象

            renderer.getSharedContext().setReplacedElementFactory(new Base64ImgReplacedElementFactory());

            renderer.getSharedContext().getTextRenderer().setSmoothingThreshold(0);

            //String fontPath = HtmlToPDF.class.getClassLoader().getResource("").toString().replaceAll("file:/", "C:\\Users\\Administrator\\Downloads\\simsunttc\\") + "simsun.ttc";

            // 解决中文支持问题  字体必须名称必须和前台页面的大小写一直（simsun 区分大小写）

            String fontPath="C:\\Users\\Administrator\\Downloads\\simsunttc\\simsun.ttc";

            ITextFontResolver fontResolver = renderer.getFontResolver();

            fontResolver.addFont(fontPath, BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);

            url=new File(url).toURI().toURL().toString();

            renderer.setDocument(url);

            //解决图片相对路径问题，window 上必须用file:/; 后面路径只写到img标签中src的上级目录

            renderer.getSharedContext().setBaseURL("file:/C:/Users/Administrator/Desktop/xse/");

            renderer.layout();

            renderer.createPDF(os);

            os.flush();

            os.close();

        }catch(Exception e ){

            e.printStackTrace();

        }

    }

}

import com.lowagie.text.BadElementException;

import com.lowagie.text.Image;

import com.lowagie.text.pdf.codec.Base64;

import org.w3c.dom.Element;

import org.xhtmlrenderer.extend.FSImage;

import org.xhtmlrenderer.extend.ReplacedElement;

import org.xhtmlrenderer.extend.ReplacedElementFactory;

import org.xhtmlrenderer.extend.UserAgentCallback;

import org.xhtmlrenderer.layout.LayoutContext;

import org.xhtmlrenderer.pdf.ITextFSImage;

import org.xhtmlrenderer.pdf.ITextImageElement;

import org.xhtmlrenderer.render.BlockBox;

import org.xhtmlrenderer.simple.extend.FormSubmissionListener;

import java.io.IOException;

/**

 *  * 图片base64支持，把图片转换为itext自己的图片对象

 *  * @author Administrator

 *  *

 *  

 */

public class Base64ImgReplacedElementFactory implements ReplacedElementFactory {

    /**

     *  * 实现createReplacedElement 替换html中的Img标签

     *  * 

     *  * @param c 上下文

     *  * @param box 盒子

     *  * @param uac 回调

     *  * @param cssWidth css宽

     *  * @param cssHeight css高

     *  * @return ReplacedElement

     *  

     */

    public ReplacedElement createReplacedElement(LayoutContext c, BlockBox box, UserAgentCallback uac,int cssWidth, int cssHeight) {

        Element e = box.getElement();

        if (e == null) {

            return null;

        }

        String nodeName = e.getNodeName();

        // 找到img标签

        if (nodeName.equals("img")) {

            String attribute = e.getAttribute("src");

            FSImage fsImage;

            try {

                // 生成itext图像

                fsImage = buildImage(attribute, uac);

            } catch (BadElementException e1) {

                fsImage = null;

            } catch (IOException e1) {

                fsImage = null;

            }

            if (fsImage != null) {

                // 对图像进行缩放

                if (cssWidth != -1 || cssHeight != -1) {

                    fsImage.scale(cssWidth, cssHeight);

                }

                return new ITextImageElement(fsImage);

            }

        }

        return null;

    }

    /**

     *  * 编解码base64并生成itext图像    

     *  

     */

    protected FSImage buildImage(String srcAttr, UserAgentCallback uac) throws IOException,

            BadElementException {

        FSImage fiImg = null;

        if (srcAttr.toLowerCase().startsWith("data:image/")) {

            String base64Code = srcAttr.substring(srcAttr.indexOf("base64,") + "base64,".length(), srcAttr.length());

            // 解码

            byte[] decodedBytes = Base64.decode(base64Code);

            fiImg = new ITextFSImage(Image.getInstance(decodedBytes));

        } else {

            fiImg = uac.getImageResource(srcAttr).getImage();

        }

        return fiImg;

    }

    public void reset() {

    }

    @Override

    public void remove(Element arg0) {

    }

    @Override

    public void setFormSubmissionListener(FormSubmissionListener arg0) {

    }

}