PDFBox returns "null" and nothing else

[Roberto Nibali <rn...@gmail.com>]

Hi

What could be the reason for PDFBox to simply reply "null"?

I sporadically get such a reply from the library, but the processing just
continues. I have absolutely no clue where this is generated.

Best regards
Roberto

Re: PDFBox returns "null" and nothing else

[Roberto Nibali <rn...@gmail.com>]

Hi Tilman

I have absolutely no idea. Today, I ran my tool over thousands of PDFs to
migrate the form fields, and in the output log  (created by redirecting
stderr and stdout into a log file) I saw entries with "null", which do not
come from my code ;). I have no means to reproduce it, since I had to run
my tool in a high secure environment, but it seems that something with
those PDFs, which I never had the chance to test, does not seem to work,
and the only feedback I get from PDFBox is a line which reads "null".

Unfortunately, I have absolutely no idea which PDFs they are and I can't
easily modify my tool and then re-run it again. This requires a complicated
process. I will try to prepare as much useful output as possible for the
next run (maybe on Monday) to hopefully pinpoint this down to the culprit.
I just thought that meanwhile I'd ask if anyone ever encountered this
before.

Thanks for your time in answering my vague question.

BTW: The tool, which you helped develop as well quite a bit with your great
feedback has worked surprisingly well in its maiden run on the client side,
especially since we only received a very small set of PDFs to test with.
Ever since I introduced the Javascript injection code for the
"document/open" event plus the setNeedAppearance(true), things sail
smoothly. Logically, it will only work for Adobe products, but they do not
have anything else.

Best regards
Roberto

On Fri, Jul 31, 2015 at 6:35 PM, Tilman Hausherr <TH...@t-online.de>
wrote:

> Am 31.07.2015 um 15:46 schrieb Roberto Nibali:
>
>> Hi
>>
>> What could be the reason for PDFBox to simply reply "null"?
>>
> What do you mean with "reply" - as a console output, as a log output, or
> as return value from a call? If it is a call, which one?
>
>
> Tilman
>
>
>
>> I sporadically get such a reply from the library, but the processing just
>> continues. I have absolutely no clue where this is generated.
>>
>> Best regards
>> Roberto
>>
>>
>
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Re: PDFBox returns "null" and nothing else

[Tilman Hausherr <TH...@t-online.de>]

Am 31.07.2015 um 15:46 schrieb Roberto Nibali:
> Hi
>
> What could be the reason for PDFBox to simply reply "null"?
What do you mean with "reply" - as a console output, as a log output, or 
as return value from a call? If it is a call, which one?


Tilman


>
> I sporadically get such a reply from the library, but the processing just
> continues. I have absolutely no clue where this is generated.
>
> Best regards
> Roberto
>


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