4.0.0 org.springframework.bootspring-boot-starter-parent4.0.9 studyboot-runtime1 21 org.springframework.bootspring-boot-starter-webmvc org.springframework.bootspring-boot-starter-validation org.springframework.bootspring-boot-starter-jdbc com.mysqlmysql-connector-jruntime org.springframework.bootspring-boot-maven-pluginstudy.runtime.RuntimeLab