Re: [smila-dev] Blackboard inconsistency!?

[<daniel.stucky@xxxxxxxxxxxxx>]

Hi Bogdan,

I don't expect any problems in the Blackboard's attachment handling.
We used all kinds of attachments (txt, pdf, office documents, images, ...) in various SMILA demos and never encountered such a problem.

I assume that the exception is thrown from within the HSSFWorkbook, right ?

Could you check what happens if you load the bytes directly from a file instead of using wb.getBytes(), store them in the blackboard and then initialize your new HSSFWorkbook from the bytes stored in the Blackboard ?

Bye,
Daniel

-----Ursprüngliche Nachricht-----
Von: smila-dev-bounces@xxxxxxxxxxx [mailto:smila-dev-bounces@xxxxxxxxxxx] Im Auftrag von Bogdan Sacaleanu
Gesendet: Mittwoch, 6. Oktober 2010 17:30
An: 'Smila project developer mailing list'
Betreff: [smila-dev] Blackboard inconsistency!?


	Dear all,

I am having some problems using the blackboard for saving attachments.
Namely, I am trying to save and Excel file and having it read back, but
there seem to be some inconsistencies with the stream:

" java.io.IOException: Invalid header signature; read 0x0005060000100809,
expected 0xE11AB1A1E011CFD0"

The code looks like this:

...
blackboard.setAttachment(message.getQuery(), "workbook", wb.getBytes());
HSSFWorkbook wb_test = new HSSFWorkbook(new
ByteArrayInputStream(blackboard.getAttachment(message.getQuery(),
"workbook")));
...

Any idea what goes wrong at this point!?

Kind regards,
   Bogdan Sacaleanu.

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Bogdan Eugen Sacaleanu, Researcher & Software Engineer

LT-Lab DFKI

Stuhlsatzenhausweg 3

66123 Saarbruecken, Germany

bogdan@xxxxxxx Phone: +49 681 302 5261

http://www.dfki.de/~bogdan Fax : +49 681 302 5338

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D-67663 Kaiserslautern, Germany

Geschaeftsfuehrung:

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