For your reference, the files were generated using SXSSFWorkbook -----Original Message----- From: "노은석"<eodydd...@naver.com> To: "POI Users List"<user@poi.apache.org>; Cc: Sent: 2024-09-05 (목) 10:02:04 (GMT+09:00) Subject: Re: Difference Between Apache POI 3.17 and 4.0.0+ Versions Regarding Excel File Recognition on Slack
Hello! As per your suggestion, I also generated an Excel file using version 5.3.0, but it was still recognized as a binary file. I compared the XML structure of files created with versions 3.17, 4.1.3, and 5.3.0, and they were identical. Just in case, I have attached the relevant files. Among the attached folders, the ones with _excel in the name are Excel files that were saved under a different name using Microsoft Excel after being generated with POI. (These files were recognized as Excel files.) Please have a look and confirm. Thank you! -----Original Message----- From: "Dominik Stadler"<dominik.stad...@gmx.at.INVALID> To: "POI Users List"<user@poi.apache.org>; Cc: Sent: 2024-09-05 (목) 01:19:37 (GMT+09:00) Subject: Re: Difference Between Apache POI 3.17 and 4.0.0+ Versions Regarding Excel File Recognition on Slack As the major version jump indicates, there is a fairly large set of changes between those versions: https://github.com/apache/poi/compare/REL_3_17_FINAL...REL_4_0_0_FINAL and thus very hard to pin-point what may have been changed. As .xlsx files are actually a zip-file with XML-files inside, you can unzip two sample files and compare the contents to find out which differences there are between those versions. Also the latest version 5.3.0 has many many more changes, did you try with a more recent version? D. On Wed, Sep 4, 2024 at 1:53 PM 노은석 <eodydd...@naver.com> wrote: > Hello, > > I would like to understand the differences between Apache POI version 3.17 > and versions after 4.0.0. The reason for asking is that when an `.xlsx` > file generated with versions after 4.0.0 is uploaded to Slack, it is not > recognized as an Excel file. However, files generated with version 3.17 are > correctly recognized as Excel files. What could be causing this difference? > > Thank you! >
