4.0.0 org.springframework.boot spring-boot-starter-parent 3.5.4 com.ljc42 demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 17 org.springframework.boot spring-boot-starter-data-jpa com.h2database h2 runtime org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-data-redis org.apache.rocketmq rocketmq-spring-boot-starter 2.3.4 org.json json 20250517 org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin