SpringBoot应用启动过程挂载点与Spring事件监听对应如下表：
starting ApplicationStartingEvent environmentPrepared ApplicationEnvironmentPreparedEvent contextPrepared ApplicationContextInitializedEvent contextLoaded ApplicationPreparedEvent started ApplicationStartedEvent running ApplicationReadyEvent failed ApplicationFailedEvent
Spring中注册监听事件：
@Component
public class AppListener implements ApplicationListener<ApplicationReadyEvent> {
@Override
public void onApplicationEvent(ApplicationReadyEvent event) {
System.out.println("SPRING BOOT READY!!!");
}
}