package test;

 import java.io.IOException ;

 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 com.lowagie.text.BadElementException ;

 import com.lowagie.text.Image ;

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

 public class B64ImgReplacedElementFactory 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;

     }

     /**

      * 将base64编码解码并生成itext图像

      *

      * @param srcAttr 属性

      * @param uac 回调

      * @return FSImage

      * @throws IOException io异常

      * @throws BadElementException BadElementException

      */

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

             BadElementException {

         FSImage fsImage;

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

             String b64encoded = srcAttr.substring(srcAttr.indexOf("base64,") + "base64,".length(),

                     srcAttr.length());

             // 解码

             byte[] decodedBytes = Base64.decode(b64encoded);

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

         } else {

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

         }

         return fsImage;

     }

     /**

      * 实现reset

      */

     public void reset() {

     }

     @Override

     public void remove(Element arg0) {}

     @Override

     public void setFormSubmissionListener(FormSubmissionListener arg0) {}

 }

 // 解决base64图片支持问题

 sharedContext.setReplacedElementFactory(new B64ImgReplacedElementFactory());

 sharedContext.getTextRenderer().setSmoothingThreshold(0);

 renderer.setDocumentFromString(strFileContent);