4.0.0 org.springframework.boot spring-boot-starter-parent 3.0.4 com.example PushDemo 0.0.1-SNAPSHOT PushDemo PushDemo 17 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-test test org.eclipse.paho org.eclipse.paho.client.mqttv3 1.2.5 com.google.code.gson gson 2.9.0 org.springframework.boot spring-boot-starter-webflux com.squareup.okhttp3 okhttp org.springframework.boot spring-boot-maven-plugin