On 6/27/2025 2:22 PM, christian_kule...@me.com.INVALID wrote:
I have now spent some time trying to understand this deviation in behaviour.
In my opinion, we cannot parse `XMPMetaData` during validation because it is
not formatted correctly at the position of the lang attribute. If I comment
out the part that sets the DublinCore schema, the parsing works, but the
validation then fails. Can you explain to me why the `lang` attribute lang
is set correctly in Production and not in Test? As it is the same process,
the result should be the same.
I remember we had such a problem because something wrong in the class
path. All I found was this, which had Apache FOP in the classpath:
https://lists.apache.org/thread/snzl9c655vzoyfyknxjofd6ff5r8nf4g
See also
https://www.mail-archive.com/users@pdfbox.apache.org/msg09256.html
possible solution:
https://stackoverflow.com/a/54588171/535646
and another:
https://issues.apache.org/jira/browse/PDFBOX-4817
please tell if this helps, if yes then I should add it to the FAQ or
improve the javadoc, or maybe change the code so that a warning comes.
Tilman
https://imgur.com/a/FTgmlYl
```java
private static void createDublinCoreSchema(
PDDocumentInformation docInfo,
XMPMetadata xmpMetadata
) {
if (docInfo.getTitle() != null) {
DublinCoreSchema dublinCoreSchema =
xmpMetadata.createAndAddDublinCoreSchema();
dublinCoreSchema.setTitle(docInfo.getTitle());
}
}
```
## Metadata test | After PDFBox PDF/A conversion
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?><x:xmpmeta
xmlns:x="adobe:ns:meta/">
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
<rdf:Description xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/";
rdf:about="">
<pdfaid:part>1</pdfaid:part>
<pdfaid:conformance>B</pdfaid:conformance>
</rdf:Description>
<rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/";
rdf:about="">
<dc:title>
<rdf:Alt>
<rdf:li
lang="x-default">Arbeitsunfähigkeitsbescheinigung</rdf:li>
</rdf:Alt>
</dc:title>
</rdf:Description>
<rdf:Description xmlns:xmp="http://ns.adobe.com/xap/1.0/"; rdf:about="">
<xmp:CreateDate>2025-06-27T11:10:21+00:00</xmp:CreateDate>
<xmp:ModifyDate>2025-06-27T11:10:21+00:00</xmp:ModifyDate>
<xmp:CreatorTool>Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0
Safari/537.36</xmp:CreatorTool>
</rdf:Description>
<rdf:Description xmlns:pdf="http://ns.adobe.com/pdf/1.3/"; rdf:about="">
<pdf:Producer>Skia/PDF m136</pdf:Producer>
</rdf:Description>
</rdf:RDF>
</x:xmpmeta><?xpacket end="w"?>
## Metadata production | After PDFBox PDF/A conversion
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?><x:xmpmeta
xmlns:x="adobe:ns:meta/">
<rdf:RDF xmlns:rdf=http://www.w3.org/1999/02/22-rdf-syntax-ns#>
<rdf:Description xmlns:pdfaid=http://www.aiim.org/pdfa/ns/id/
rdf:about="">
<pdfaid:part>1</pdfaid:part>
<pdfaid:conformance>B</pdfaid:conformance>
</rdf:Description>
<rdf:Description xmlns:dc=http://purl.org/dc/elements/1.1/ rdf:about="">
<dc:title>
<rdf:Alt>
<rdf:li
xml:lang="x-default">Arbeitsunfähigkeitsbescheinigung</rdf:li>
</rdf:Alt>
</dc:title>
</rdf:Description>
<rdf:Description xmlns:xmp=http://ns.adobe.com/xap/1.0/ rdf:about="">
<xmp:CreateDate>2025-06-27T11:13:43+00:00</xmp:CreateDate>
<xmp:ModifyDate>2025-06-27T11:13:43+00:00</xmp:ModifyDate>
<xmp:CreatorTool>Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0
Safari/537.36</xmp:CreatorTool>
</rdf:Description>
<rdf:Description xmlns:pdf=http://ns.adobe.com/pdf/1.3/ rdf:about="">
<pdf:Producer>Skia/PDF m136</pdf:Producer>
</rdf:Description>
</rdf:RDF>
</x:xmpmeta><?xpacket end="w"?>
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