[jira] [Created] (PDFBOX-1599) ConvertToImage gets ClassCastException with Checkboxes in PDFForm

["Jens Vogt (JIRA)" <ji...@apache.org>]

Jens Vogt created PDFBOX-1599:
---------------------------------

             Summary: ConvertToImage gets ClassCastException with Checkboxes in PDFForm
                 Key: PDFBOX-1599
                 URL: https://issues.apache.org/jira/browse/PDFBOX-1599
             Project: PDFBox
          Issue Type: Bug
          Components: PDModel
    Affects Versions: 1.8.1
         Environment: Windows Vista, Java 1.6
            Reporter: Jens Vogt
            Priority: Critical
             Fix For: 1.8.1


When creating an image from a PDF Form we get an CastCastException in:
Exception in thread "main" java.lang.ClassCastException: org.apache.pdfbox.cos.COSName cannot be cast to org.apache.pdfbox.cos.COSStream
        at org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceDictionary.getNormalAppearance(PDAppearanceDictionary.java:103)
        at org.apache.pdfbox.pdfviewer.PageDrawer.drawPage(PageDrawer.java:140)
        at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:781)
        at org.apache.pdfbox.examples.util.Extraction$BarcodeLocator.getBarcode(Extraction.java:418)
        at org.apache.pdfbox.examples.util.Extraction$BarcodeLocator.access$000(Extraction.java:379)
        at org.apache.pdfbox.examples.util.Extraction.<init>(Extraction.java:103)
        at org.apache.pdfbox.examples.util.Extraction.main(Extraction.java:138)

An further analysis shows that it seems to be related to checkboxes on the PDF Form. I fixed it temporarily using:

try
			{
				COSStream as = (COSStream)map.getDictionaryObject( asName );
				actuals.put( asName.getName(), new PDAppearanceStream( as ) );
			}
			catch (ClassCastException ex)
			{
				System.err.println("Exception name: " + asName.getName());
			}
in PDAppearanceDictionary.java.

Best regards
Jens

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