pdfbox自帶的轉換html的方法效果不是太好，pdfdom是基於pdfbox的，在此之上加強了轉換html的能力。

maven

        <dependency>
            <groupId>net.sf.cssbox</groupId>
            <artifactId>pdf2dom</artifactId>
            <version>1.6</version>
        </dependency>

        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.4</version>
        </dependency>

        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox-tools</artifactId>
            <version>2.0.4</version>
        </dependency>

使用

public void generateHTMLFromPDF(String filename) throws IOException, ParserConfigurationException {
        PDDocument pdf = PDDocument.load(new File(filename));
        Writer output = new PrintWriter("pdf.html", "utf-8");
        new PDFDomTree().writeText(pdf, output);
        output.close();
}

或者

public void convertPdf2Html(File input,Writer out) throws IOException, ParserConfigurationException {
        PDDocument pdf = PDDocument.load(input);
        PDFDomTree tree = new PDFDomTree();
        tree.writeText(pdf,out);
}

轉自：這裏

使用pdfdom將pdf轉為html