使用tika将pdf转为html

序

tika是个功能强大的项目，这里展示下如何使用tika来将pdf转为html。

maven

        
        
            org.apache.tika
            tika-core
            1.16
        
        
        
            org.apache.tika
            tika-parsers
            1.16
        

        

转换

public static String extractHtml(File file) throws IOException {
        byte[] bytes = Files.toByteArray(file);
        AutoDetectParser tikaParser = new AutoDetectParser();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        SAXTransformerFactory factory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        TransformerHandler handler;
        try {
            handler = factory.newTransformerHandler();
        } catch (TransformerConfigurationException ex) {
            throw new IOException(ex);
        }
        handler.getTransformer().setOutputProperty(OutputKeys.METHOD, "html");
        handler.getTransformer().setOutputProperty(OutputKeys.INDENT, "yes");
        handler.getTransformer().setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        handler.setResult(new StreamResult(out));
        ExpandedTitleContentHandler handler1 = new ExpandedTitleContentHandler(handler);
        try {
            tikaParser.parse(new ByteArrayInputStream(bytes), handler1, new Metadata());
        } catch (SAXException | TikaException ex) {
            throw new IOException(ex);
        }
        return new String(out.toByteArray(), "UTF-8");
    }

小结

效果对比的话，pdfDom的效果好一点。