4.0.0 org.springframework.boot spring-boot-starter-parent 2.4.1 com.yuyekeji.www demo 0.0.1-SNAPSHOT mysql mysql project for Spring Boot 1.8 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-starter-jdbc mysql mysql-connector-java 5.1.46 org.springframework.boot spring-boot-starter-jdbc org.springframework.boot spring-boot-maven-plugin