itext+thyemeleaf 实现html模版生成pdf

相关jar

<!-- itext +thymeleaf html模版转pdf  -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>html2pdf</artifactId>
    <version>5.0.1</version>
</dependency>
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.8.25</version>
</dependency>
<dependency>
    <groupId>org.thymeleaf</groupId>
    <artifactId>thymeleaf</artifactId>
    <version>3.0.6.RELEASE</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>net.sf.jtidy</groupId>
    <artifactId>jtidy</artifactId>
    <version>r938</version>
    <scope>compile</scope>
</dependency>

html模版 （其中ttf文件为字体）

主要代码

/**
 * itext7 +thymeleaf html模版转pdf工具类
 */
public class ThymeleafToPdfUtil {

    private static final String templateHtml = "pdf.html";
    private static final String FONT = "templates/SIMHEI.TTF";
    /**
     * contentData 模板数据
     * pdfPath 生成的pdf的路径
     * pdfName pdf名称
     * */
    public static void generatePdf(Map<String, Object> contentData,String pdfPath,String pdfName) throws Exception {
        ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
        templateResolver.setPrefix("/templates/");
        templateResolver.setSuffix(".html");
        templateResolver.setTemplateMode(HTML);
        templateResolver.setCharacterEncoding("UTF-8");

        TemplateEngine templateEngine = new TemplateEngine();
        templateEngine.setTemplateResolver(templateResolver);

        Context context = new Context();
        context.setVariable("data", contentData);
        String renderedHtmlContent = templateEngine.process(templateHtml, context);
        String xHtml = convertToXhtml(renderedHtmlContent);

        ConverterProperties converterProperties = new ConverterProperties();
        FontProvider dfp = new DefaultFontProvider();
        dfp.addFont(FontProgramFactory.createFont(ResourceUtil.readBytes(FONT)));
        converterProperties.setFontProvider(dfp);
        File destDir = new File(pdfPath);
        if (!destDir.exists()) {
            destDir.mkdirs();
        }
        OutputStream out = new FileOutputStream(new File(pdfPath+pdfName));
        HtmlConverter.convertToPdf(xHtml, out, converterProperties);
        System.out.print("===  pdf生成  成功 ===  ");

    }


    private static String convertToXhtml(String html) throws UnsupportedEncodingException {
        Tidy tidy = new Tidy();
        tidy.setInputEncoding("UTF-8");
        tidy.setOutputEncoding("UTF-8");
        tidy.setXHTML(true);
        ByteArrayInputStream inputStream = new ByteArrayInputStream(html.getBytes("UTF-8"));
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        tidy.parseDOM(inputStream, outputStream);
        return outputStream.toString("UTF-8");
    }

}