TextFragmentAbsorber throws exception on some pdf files

Aspose.PDF Product Family
1

We work with the textfragmentabsorber to search for text in pdf files, but in some files we get an nul reference exception.
TextFragmentAbsorber textAbsorberLabel = new TextFragmentAbsorber(OurRegexExpression);
textAbsorberLabel.TextSearchOptions = new Aspose.Pdf.Text.TextSearchOptions(true);
document.Pages.Accept(textAbsorberLabel); -> here the exception is thrown
It only happens with some pdf files, most files are fine.

Thanks for your help
Elke

2

@CODEX_Entwickler
please attach any of the files with which the error occurs.

3

I’m sorry, I’m not able to share these files because they are confidential. We found a solution for us: we use another pdf tool to run again an OCR and after that no more exception is thrown by the textfragmentabsorber.

4

@CODEX_Entwickler
You could try to change the text in the document (using Adobe Acrobat Pro for example)?

5

Thanks for your help!
After changing something in the pdf with another tool (like acrobat) no more exception is thrown.

We use a workaround now: if the exception appears on one file, we run a ocr scan with another tool and when try it again. It’s not perfect, but it works for us.