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Struts & Hibernate
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| | | -none- | -none- 2007-09-13 - By Paulo Soares
Back
Please provide a small standalone program and all the
files needed to reproduce the problem.
Paulo
--- nleduc <nleduc@(protected)> wrote:
>
> We use iText to generate employee forms for viewing
> and printing online. We
> read a PDF created with Acrobat version 7, write
> data to the form fields and
> then flatten the forms. In one of our applications,
> the user needs to see
> multiple employee forms. Our strategy for this is
> to create each PDF, write
> it to a temporary file, using the employee ID as
> file name, then to read the
> files in and concatenate them. The code we use to
> read and concatenate the
> documents is basically the following:
>
> String path = "pdfDirectory/";
> PdfReader[] readers = new
> PdfReader[ids.length];
> try {
> PdfCopyFields concat = new
> PdfCopyFields(res.getOutputStream());
> for (int i=0; i < ids.length; i++) {
> String id = ids[i];
> StringBuffer pdfFilename = new
> StringBuffer(path);
> pdfFilename.append(id);
> readers[i] = new
> PdfReader(pdfFilename.toString());
> concat.addDocument(readers[i]);
> }
> concat.close();
> } catch (Exception e) {
> Log.error(e);
> }
>
> This has worked correctly for a number of years, but
> now it is failing. The
> individual files are created correctly, but when we
> try to concatenate them,
> we get the following exception:
>
> java.lang.ClassCastException
> at
>
com.lowagie.text.pdf.PdfCopyFieldsImp.updateCalculationOrder(Unknown
> Source)
> at
>
com.lowagie.text.pdf.PdfCopyFieldsImp.addDocument(Unknown
> Source)
> at
>
com.lowagie.text.pdf.PdfCopyFields.addDocument(Unknown
> Source)
> at
>
edu.utah.acs.lib.hr.PANPdfGenerator.concatenatePdfPans(PANPdfGenerator.java:705)
> ....
>
> I don't know exactly which version of iText we are
> using (maybe someone
> could tell me if there is somewhere in the jar file
> I can find that).
>
> Thanks for your help,
> Nelson LeDuc
> University of Utah
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