Hello PDFBox community,
I have a working model that copies & scales PDF pages from one
PDDocument to another (thanks Maruan), however, when I attempt to
convert the target document to an image via PDFRenderer, I am getting
the following error:
SEVERE: Error converting PDF to TIFF:
org.apache.pdfbox.cos.COSStream cannot be cast to
org.apache.pdfbox.cos.COSObject
java.lang.ClassCastException: org.apache.pdfbox.cos.COSStream cannot
be cast to org.apache.pdfbox.cos.COSObject
at
org.apache.pdfbox.pdmodel.PDResources.getXObjects(PDResources.java:245)
For backgrounder, I am using a PDFormXObject to copy the contents of a
source page and place within a new page within the target document.
This approach allows me to scale the object down, allowing for more
margin to accommodate OMR marks. Some brief code:
PDPageContentStream contentStream = new
PDPageContentStream(targetDoc, targetPage, false, false);
contentStream.drawXObject(form, (mediaBox.getWidth() -
mediaBox.getWidth()*scale)/2,(mediaBox.getHeight()
-mediaBox.getHeight()*scale)/2,mediaBox.getWidth()*scale,mediaBox.getHeight()*scale);
contentStream.close();
return targetDoc;
If I save the targetDoc to disk, then load into a new PDDocument, I do
not get this error. However, if I simply attempt to render the
targetDoc to an image, I get the stacktrace above.
Please advise.
A.D. Kent
