4.0.0 top.wu2020 wu-lazy-cloud-network 1.2.2-JDK17-SNAPSHOT wu-lazy-cloud-heartbeat-sample wu-lazy-cloud-heartbeat-sample wu-lazy-cloud-heartbeat-sample pom wu-lazy-cloud-heartbeat-client-sample wu-lazy-cloud-heartbeat-server-sample 17 org.springframework.boot spring-boot-starter org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin