使用PDFBox将UTF-8编码的字符串写入PDF [英] Using PDFBox to write UTF-8 encoded strings to a PDF

问题描述

我无法使用PDFBox将unicode字符写入PDF。下面是一些生成垃圾字符而不是输出š的示例代码。我可以添加什么来获得对UTF-8字符串的支持？

I am having trouble writing unicode characters out to a PDF using PDFBox. Here is some sample code that generates garbage characters instead of outputting "š". What can I add to get support for UTF-8 strings?

PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page);
PDPageContentStream contentStream = new PDPageContentStream(document, page);

PDType1Font font = PDType1Font.HELVETICA;
contentStream.setFont(font, 12);
contentStream.beginText();
contentStream.moveTextPositionByAmount(100, 400);
contentStream.drawString("š");
contentStream.endText();
contentStream.close();
document.save("test.pdf");
document.close();

推荐答案

您正在使用其中一个内置的Base 14随Adobe Reader提供的字体。这些字体不是Unicode;它们实际上是一个标准的拉丁字母，但有几个额外的字符。它看起来像你提到的字符，一个带有caron（š）的小写字母，在PDF拉丁文中没有...虽然大写的Š 可用，但奇怪的是只在Windows上。请参阅 http://www.adobe.com/devnet/pdf上PDF规范的附录D. /pdf_reference.html 了解详细信息。

You are using one of the inbuilt 'Base 14' fonts that are supplied with Adobe Reader. These fonts are not Unicode; they are effectively a standard Latin alphabet, though with a couple of extra characters. It looks like the character you mention, a lowercase s with a caron (š), is not available in PDF Latin text... though an uppercase Š is available but curiously on Windows only. See Appendix D of the PDF specification at http://www.adobe.com/devnet/pdf/pdf_reference.html for details.

无论如何，要达到目的......如果要使用Unicode字符，则需要嵌入Unicode字体。确保你被许可嵌入你决定的任何字体...我可以推荐开源 Gentium 或 Doulos 字体因为它们是免费的，高质量的并且具有全面的Unicode支持。

Anyway, getting to the point... you need to embed a Unicode font if you want to use Unicode characters. Make sure you are licensed to embed whatever font you decide on... I can recommend the open-source Gentium or Doulos fonts because they're free, high quality and have comprehensive Unicode support.

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