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https://issues.apache.org/jira/browse/TIKA-2025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15389645#comment-15389645
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Aeham Abushwashi commented on TIKA-2025:
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Thank you very much Tim!
I’ve tested the change with my example file and it works beautifully for both
15- and 16-digit credit card numbers.
Out of interest, what’s the difference between my 16-digit numbers and the
numbers you’ve used in the unit test data file? I imagine it’s cell formatting
but I thought it’s not possible to format a 16-digit sequence as a number in
Excel.
> Extraction of long sequences of digits from Excel spreadsheets using Tika
> 1.13 doesn’t yield the expected results
> -----------------------------------------------------------------------------------------------------------------
>
> Key: TIKA-2025
> URL: https://issues.apache.org/jira/browse/TIKA-2025
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.13
> Reporter: Aeham Abushwashi
> Assignee: Tim Allison
> Fix For: 2.0, 1.14
>
> Attachments: Credit Card Numbers.xlsx
>
>
> If an Excel spreadsheet contains a long sequence of digits, such as a credit
> card number, Tika 1.13 will emit the said sequence in scientific notation.
> For example, the credit card number “340229177292566” is extracted from the
> attached spreadsheet as 3.40229E+14, which clearly is not the desired output.
> This works as expected in 1.12 and earlier. I suspect POI’s recent use of
> org.apache.poi.ss.usermodel.ExcelGeneralNumberFormat is to blame.
> I think the impact of this issue is significant. There’s plenty of
> information that can no longer be reliably extracted from spreadsheets. Think
> credit card numbers, telephone numbers and product identifiers to name a few.
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