CODEWITHSUNDEEP
xmlpdfapache-fop
Maneesh
Maneesh

Reputation: 149

Unable to add an attachment to a PDF while using FOP

I have an XSL document that transforms an XML document to a PDF. It had been working fine until I was asked to enhance this so that it is possible to add attachment to the PDF as well. I searched and found that the XSL must be edited in the following manner to achieve that.

1.The fo:root element should include xmlns:pdf="http://xmlgraphics.apache.org/fop/extensions/pdf attribute.

  1. Following piece of lines should be added before fo:page-sequence element.

< fo:declarations>
< pdf:embedded-file filename=" myfile.text " src=" url(file:///C:/Bill.txt" />
< /fo:declarations>

Now when I run the transformation I get the following error.

Unknown formatting object "{http://xmlgraphics.apache.org/fop/extensions/pdf}embedded-file" encountered (a child of fo:declarations}. (No context info available)

I searched a lot over the internet but could not find a solution to it. Can someone help me here ?

Upvotes: 2

Views: 1996

Answers (1)

lfurini
lfurini

Reputation: 3778

Apparently, your code fragment seems to respect the documentation for the extension element pdf:embedded-file (note that a namespace URI like http://xmlgraphics.apache.org/fop/extensions/pdf is just an identifier, it doesn't necessarily point to a web resource).

However, I tested this simple example with FOP 1.1 (by the way, you did not say which version of FOP you are using) and it works as expected:

<?xml version="1.0" encoding="UTF-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" 
    xmlns:pdf="http://xmlgraphics.apache.org/fop/extensions/pdf">
    <fo:layout-master-set>
        <fo:simple-page-master master-name="one">
            <fo:region-body />
        </fo:simple-page-master>
    </fo:layout-master-set>
    <fo:declarations>
      <pdf:embedded-file filename="test.png" description="This is just an image" src="https://www.google.it/images/srpr/logo11w.png"/>
    </fo:declarations>
    <fo:page-sequence master-reference="one">
        <fo:flow flow-name="xsl-region-body">
            <fo:block><fo:basic-link external-destination="url(embedded-file:test.png)">Attached image</fo:basic-link></fo:block>
        </fo:flow>
    </fo:page-sequence>
</fo:root>

I was able to produce the error message you receive (Unknown formatting object ...) using an incorrect namespace URI, for example adding a space at the beginning or at the end; so I suggest you check if your declaration of the pdf namespace is exactly like this:

xmlns:pdf="http://xmlgraphics.apache.org/fop/extensions/pdf"

Upvotes: 5

Related Questions