linux上生成pdf中文不显示或者丢失部分字

linux生成pdf中文字体完全不显示，然后添加了一个文件夹放字体simsunb.ttf,结果部分汉字丢失，索性把下图所有的中文字体加上，解决问题。

写法一：

<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>html2pdf</artifactId>
    <version>2.0.2</version>
</dependency>
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.1</version>
</dependency>
<dependency>
    <groupId>com.itextpdf.tool</groupId>
    <artifactId>xmlworker</artifactId>
    <version>5.5.1</version>
</dependency>
<!-- 支持中文 -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext-asian</artifactId>
    <version>5.2.0</version>
</dependency>
<!-- 支持css样式渲染 -->
<dependency>
    <groupId>org.xhtmlrenderer</groupId>
    <artifactId>flying-saucer-pdf-itext5</artifactId>
    <version>9.0.3</version>
</dependency>

   
WriterProperties writerProperties = new WriterProperties();
    //Add metadata
    writerProperties.addXmpMetadata();
    ByteArrayOutputStream fos = new ByteArrayOutputStream();
    PdfWriter pdfWriter = new PdfWriter(fos, writerProperties);
    PdfDocument pdfDoc = new PdfDocument(pdfWriter);
    //PageSize pageSize=new PageSize(842, 595);
    pdfDoc.addNewPage();
    pdfDoc.getCatalog().setLang(new PdfString("UTF-8"));
    //Set the document to be tagged
    pdfDoc.setTagged();
    pdfDoc.getCatalog().setViewerPreferences(new PdfViewerPreferences().setDisplayDocTitle(true));
    Document document=new Document(pdfDoc);
    //document.add(image);
    ConverterProperties props = new ConverterProperties();
   // Font font = new Font(BaseFont.createFont(fontUrl+",1", BaseFont.IDENTITY_H, BaseFont.EMBEDDED));
    FontProvider fp = new FontProvider();
    fp.addStandardPdfFonts();
    //fp.addDirectory(outputFile);
    fp.addDirectory(fontFileUrl);//The noto-nashk font file (.ttf extension) is placed in the resources
    fp.addSystemFonts();
    props.setFontProvider(fp);
    props.setBaseUri(outputFile);

    try {
        HtmlConverter.convertToPdf(new ByteArrayInputStream(HTML.getBytes("UTF-8")), pdfDoc, props);
    } catch (Exception e) {
        throw new WebRuntimeException("pdf处理失败：" + e.getMessage());
    }
    byte[] bytes = fos.toByteArray();
    pdfDoc.close();
   // ByteArrayBody contentBody = new ByteArrayBody(bytes, "temp" + System.currentTimeMillis() + ".pdf");
    response.setContentType("application/pdf");
    response.setCharacterEncoding("UTF-8");
    outputStream = response.getOutputStream();
    outputStream.write(bytes);

} catch (Exception e) {
    e.printStackTrace();
}finally {
    try {
        if(outputStream!=null){
            outputStream.flush();
            outputStream.close();
        }
    }catch(IOException ex){
        ex.printStackTrace();
    }

}

写法二；

  if (fontname == null) {
                            // 操作系统需要有该字体, 没有则需要安装; 当然也可以将字体放到项目中， 再从项目中读取
                            fontname = "SimSun";
                        }
                        String fontPrefix = "";
                        String os = System.getProperties().getProperty("os.name");
                        try {//取本地工程内
                            if (os.startsWith("win") || os.startsWith("Win")) {
                                java.net.URL url = this.getClass().getResource("/fonts/SIMSUN.TTC");
                                if (url != null) {
                                    fontPrefix = url.getPath();
                                } else {
                                    return super.getFont(fontname, encoding, size, style);
                                }
                            } else {
                                logger.info("配置路径为：" + linuxFontUrl);
                                //特定路径
//                                fontPrefix = (Tools.isNull(linuxFontUrl)?"/usr/share/fonts/SIMSUN.TTC":linuxFontUrl);
                                fontPrefix = linuxFontUrl;
                            }
                            logger.info("路径为：" + fontPrefix);
                            BaseFont baseFont;
                            Font font;
                            baseFont = BaseFont.createFont(fontPrefix + ",1", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
                            font = new Font(baseFont);
                            font.setSize(size);
                            font.setStyle(style);
                            return font;
                        } catch (DocumentException e) {
                            logger.info("pdf生成发生错误：" + e.getMessage());
                            e.printStackTrace();
                        } catch (IOException e) {
                            logger.info("pdf生成发生错误2：" + e.getMessage());
                            e.printStackTrace();
                        }
                        return super.getFont(fontname, encoding, size, style);