But how do I get then the metadata for this "non-working" pdfs? When I open
them in Acrobat Reader and check File Properties I see there is meta data under
"Keywords".
I need to get this data within my Java Application. Is there another than using
method getMetadata?
Many thanks
Alen
From: iText mailing list [mailto:i...@1t3xt.info]
Sent: Dienstag, 10. September 2013 18:30
To: Post all your questions about iText here
Subject: Re: [iText-questions] Pdfreader / getMetadata returns NULL for some
pdfs
On 9/10/2013 5:51 PM, Zurfluh, Alen wrote:
Hi there,
My plan is to use the Java Class PdfReader and its method getMetadata to return
metadata from a PDF document.
This does not work for all my pdf documents. For some pdf documents the method
getMetadata would return NULL.
So I compared a working with a non-working PDF file. I noticed that the working
one includes so-called Dublin Core Properties
Whereas the non-working one does not! But the non-working as well working ones
have properties like XMP core properties, PDF properties, XMP Media Management
Properties.
Can this be the reason, why getMetadata returns NULL?
When getMetadata returns NULL, there is no "document-level" XMP stream. There
may be XMP streams for other objects inside the document, but there is no
metadata with respect of the complete document.
That's the most likely difference between what you describe as the documents
that are "working" and the "non-working" ones.
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