Use XSL:FO to add attachments to PDF

2019-04-12 20:43发布

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问题:

After resolving inline images with help from SO, I need to sort out inline attachments. PDF can contain attachments and I found:fo:declarations - pdf:embedded-file but again it pointed to an external file. How can I attach a file that is part of a MIME message (most likely BASe64)?

回答1:

In the latest FOP builds, you can use the same syntax for pdf:embedded-file as for fo:external-graphic and directly append the base64 data:

<fo:declarations>
  <pdf:embedded-file filename="myfile.pdf" src="data:application/pdf;base64,<DATA>"/>
</fo:declarations>
...
<fo:basic-link external-destination="url(embedded-file:myfile.pdf)">Embedded PDF</fo:basic-link>