Java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook?

You need to put the Apache POI files in the WEB-INF/lib folder on the server.

Using maven add dependency, and all of libs is available in maven library. Build a war, and publish to tomcat, it's ok. But ... – link Jun 27 at 3:46.

Check . M2 directory and try to find class HSSFWorkbook if this class is present, check lib folder of your web app and try to find the same.

Thank you very much. – link Aug 4 at 8:38 @link: just check as answered :) – Sergii Zagriichuk Aug 4 at 9:24.

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