SpringBoot Upgrading gradle project to Spring boot 3.1.8 from 2.4.8 : When bootJar is disabled, gradle build command generated artifact name has -plain added to it in spring boot 3

Compare gradle packaging in springboot 3.1.8 and springboot 2.4.8, when bootJar is disabled

When the spring boot version is '2.4.8' -> The artifact generated is 'artifactname.jar' When the spring boot version is '3.1.8' -> The artifact generated is 'artifactname-plain.jar'

Notice the '-plain' classifier in artifact name after the upgrade.

It seems when bootJar is disabled, the generated jar doesn't have -plain in the artifact name in spring boot 2.4.8. But when I upgrade springboot to '3.1.8', the artifact name is changed.

I know we can solve this by adding classifier= '' under jar task. But this extra step was not needed in spring boot 2.4.8 version. This needs to be documented. I couldn't find any documentation related to it, exactly which version has this change.

Here is the reproducer code for this : https://github.com/SabeetaBhandari/gradle-packaging-test

Comment From: wilkinsona

It has been this way since Spring Boot 2.5 when it was documented in the release notes. It's also documented in the plugin documentation.