@EventListener 是怎么被解析的org.springframework.context.support.A

org.springframework.context.support.AbstractApplicationContext#refresh
org.springframework.context.support.AbstractApplicationContext#finishBeanFactoryInitialization
org.springframework.beans.factory.support.DefaultListableBeanFactory#preInstantiateSingletons
org.springframework.context.event.EventListenerMethodProcessor#afterSingletonsInstantiated
org.springframework.context.event.EventListenerMethodProcessor#processBean 解析出方法名称有注解 @EventListener ，然后封装到 ApplicationListenerMethodAdapter，然后添加到 org.springframework.context.support.AbstractApplicationContext#applicationListeners 中，这样如果有事件发生就会通知到加上 @EventListener 的方法上。前提是使用 @EventListener 注解的类被spring管理了