4.0.0 xyz.playedu playedu 1.2 playedu-api 17 xyz.playedu playedu-common 1.2 xyz.playedu playedu-system 1.2 xyz.playedu playedu-course 1.2 xyz.playedu playedu-resource 1.2 org.springframework.boot spring-boot-maven-plugin 3.1.2 repackage