如何使用PDFBox将标准字体嵌入到生成的PDF中

Question

I need to add some text to PDF/A files using the Apache PDFBox library for Java. The problem is that, because it needs to be a valid PDF/A file, all the used fonts must be embedded in it. I know that I can embed a TTF font using PDFBox, but I'd like to avoid having to provide a font file with the application, so I was wondering if there's a way to embed one of the standard fonts available in PDFBox as if it was external.

For example, when I write something using one of the standard fonts, the PDF validator complains about this:

I've used the following code to write the text:

  PDFont standardFont = PDType1Font.HELVETICA_BOLD;

  PDPage pag = new PDPage();

  pag.setResources(new PDResources());

  PDPageContentStream contentStream = new PDPageContentStream(pdfFile, pag);

  //Begin the Content stream 
  contentStream.beginText();       

  //Setting the font to the Content stream  
  contentStream.setFont(standardFont, 12);

  //Setting the position for the line 
  contentStream.newLineAtOffset(25, 500);

  //Adding text in the form of string 
  contentStream.showText("JUST A SAMPLE STRING");      

  //Ending the content stream
  contentStream.endText();

  //Closing the content stream
  contentStream.close();

  pdfFile.addPage(pag);

  pdfFile.save(file);

  pdfFile.close();

Is there any option to force the embed of the font when setting it?

Thanks in advance,

Answer 1

There is only one font embedded in PDFBox. You can use it this way:

PDFont font = PDType0Font.load(doc, SomePdfboxClass.class.getResourceAsStream(
                   "/org/apache/pdfbox/resources/ttf/LiberationSans-Regular.ttf"));