|
Bang on the
money,
I hadn't
realised that each servlet was instantiated
only once. Rather than force the server
to create multiple instances I removed the
class variables and that fixed it.
Regards
Peter Wilkinson
System Developer
Mantel Solutions
Pty Ltd
PO Box 98,
35 Hamilton Road
Moorooka QLD
4105
P: +61 7 3848
0001
F: +61 7 3392
9923
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----------------------- Original
Message -----------------------
From: "Paulo Soares" <[EMAIL PROTECTED]>
To: "Post all your questions
about iText here" <[email protected]>
Date: Thu, 20 Jul 2006 09:01:06
+0100
Subject: Re: [iText-questions]
IText doesn't seem to be thread safe?
I suspect that it's a problem with the
server configuration. The app server
can work in two modes: one where each request creates a new instance of the servlet and another where the same instance is used by all the requests. Your server is configured for the latter. Just guessing. Paulo ----- Original Message ----- From: "Peter Wilkinson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, July 20, 2006 4:36 AM Subject: [iText-questions] IText doesn't seem to be thread safe? > I've written a jsp page that produces a PDF using iText and it work great > until 2 people try and run the report at the same time. > > I get a variety of errors including > > DocumentException : Document is closed. > ConcurrentModficationException > NullPointerException > > as well as pdf's that are corrupt. > > I haven't declared a single thing on the page as being static. All the > exceptions are generated when trying to call a Document method so I'm > wondering if maybe the document object isn't thread safe? > > This is my document creation code. > > document = new Document(PageSize.A4.rotate()); > baseFont = BaseFont.createFont("Helvetica", BaseFont.WINANSI, false); > font = new Font(baseFont, defaultFontSize); > totalFont = new Font(baseFont, 9); > totalFont.setStyle(Font.BOLD); > heading1Font = new Font(baseFont, 20, Font.BOLDITALIC, new Color(0, 0, > 0)); > heading2Font = new Font(baseFont, 17, Font.BOLDITALIC, new Color(0, 0, > 0)); > heading3Font = new Font(baseFont, 14, Font.BOLDITALIC, new Color(0, 0, > 0)); > defaultLayoutCell = new Cell(); > defaultLayoutCell.setBorder(Rectangle.NO_BORDER); > ByteArrayOutputStream baos = new ByteArrayOutputStream(); > writer = PdfWriter.getInstance(document, baos); > //writer.setEncryption(false, "", "", PdfWriter.AllowCopy | > PdfWriter.AllowPrinting); > PageEventHandler pageEventHandler = new PageEventHandler(); > writer.setPageEvent(pageEventHandler); > writer.setViewerPreferences(PdfWriter.PageModeUseOutlines); > // step 3: we open the document > document.open(); > > Regards > > Peter Wilkinson > System Developer > Mantel Solutions Pty Ltd > > PO Box 98, 35 Hamilton Road > Moorooka QLD 4105 > > P: +61 7 3848 0001 > F: +61 7 3392 9923 > W: www.mantel.com.au > > The information contained in this electronic message (e-mail) and any > files transmitted with it, is intended for the named recipients only. It > may contain privileged and or confidential information and if you are not > the intended recipient you must not copy distribute or take any action in > reliance on it. If you have received this electronic message (e-mail) and > any files transmitted with it in error please delete immediately and > advise Mantel Solutions on 07 3848 0001. -------------------------------------------------------------------------------- > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys -- and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV -------------------------------------------------------------------------------- > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions |
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