After upgrade the Apache poi from 5.2.2 to 5.4.1 our xlx and xlxs is not working

[javarak]

After upgrading Apache POI from version 5.2.2 to 5.4.1, the Excel import/export functionality for .xls and .xlsx files stopped working.

Upon reviewing the changes in POI 5.4.1, I noticed a shift in the logging mechanism. Unlike version 5.2.2, which used lazy loading and worked fine without requiring additional dependencies, version 5.4.1 uses eager loading. As a result, it now expects log4j-api to be present in the classpath at runtime—even if logging isn't actively used.

We prefer not to include log4j-api due to prior concerns and experiences with that library. However, since we need to use POI 5.4.1, we're looking for a way to bypass this requirement and continue using the library without adding log4j-api.

Is there any workaround or configuration that allows POI 5.4.1 to function without requiring log4j-api?

Looking forward to your guidance.

[pjfanning]

POI uses log4j-api as a mandatory dependency. You can read up on the log4j docs to find out how to use log4j.
Having log4j-api on the classpath does not mean that you need to add log4j-core to your classpath. log4j-api is a lightweight jar while log4j-core is the jar that had the log4shell issues.

[pjfanning]

closing as answered