当我们使用ITextRenderer从百万富翁HTML模板生成PDF时，如何设置PDF页面大小A4？ [英] How to set PDF page size A4 when we use ITextRenderer to generate PDF from thymeleaf HTML template?

问题描述

当我们使用ITextRenderer从百万富翁HTML模板生成PDF时，如何设置PDF页面大小A4？

How to set PDF page size A4 when we use ITextRenderer to generate PDF from thymeleaf HTML template ?

我已生成PDF但页面大小不合适，如何设置页面大小A4 JAVA中的ITextRenderer库

I have generated PDF but page size is not proper, how to set page size A4 ITextRenderer library in JAVA

    ClassLoaderTemplateResolver templateResolver = new 
    ClassLoaderTemplateResolver();
    templateResolver.setSuffix(".html");
    templateResolver.setTemplateMode("HTML5");

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

    Context context = new Context();
    context.setVariable("name", "Thomas");

    String html = templateEngine.process("templates/Quote", context);

    OutputStream outputStream = new FileOutputStream("message.pdf");
    ITextRenderer renderer = new ITextRenderer();
    renderer.setDocumentFromString(html);
    renderer.layout();
    renderer.createPDF(outputStream,true);
    outputStream.close();

推荐答案

请注意您使用的是 FlyingSaucer ，而非 iText 。
FlyingSaucer 是一种内部使用的产品（非常旧版本） iText 。

Please be aware that you are using FlyingSaucer, not iText. FlyingSaucer is a product that internally uses (a very old version of) iText.

你会立即从10多年的错误修正和发展中解脱出来。

You are immediately cutting yourself off from 10+ years of bugfixes and developments.

如果你愿意只需 iText ，解决此问题的最佳方法是使用pdfHTML。

If you are comfortable going for just iText, the best way of solving this issue is with pdfHTML.

这是我们写给iText7核心的附加组件专门设计用于将HTML转换为PDF的库。

It's an add-on we wrote to the iText7 core library that is specifically designed to convert HTML into PDF.

简单示例：

    File src = new File("source_html_file.html");
    File dest = new File("target_pdf_file.pdf");

    PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
    Document doc = new Document(pdf, PageSize.A4);
    InputStream stream = new FileInputStream(src);

    ConverterProperties converterProperties = new ConverterProperties();
    FontProvider dfp = new DefaultFontProvider(true, true, true);
    converterProperties.setFontProvider(dfp);

    HtmlConverter.convertToPdf(stream, pdf, converterProperties);

在线查看教程以获取更多信息
https://developers.itextpdf.com/content/itext-7-examples/itext -7-converting-html-pdf

Check out the tutorials online for more information https://developers.itextpdf.com/content/itext-7-examples/itext-7-converting-html-pdf

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