JDK中的事件驱动机制 在了解其它之前,有必要先了解下JDK为我们提供的事件驱动(EventListener、EventObject)、观察者模式(Observer)。 JDK不仅提供了Observable类、Observer接口支持观察者模式,而且也提供了EventObject、EventListener接口来支持事件监听模式。 这些类都属于java.util下的 观察者模式(Observable和Observer) JDK...
>> nonAnnotatedClasses = Collections.newSetFromMap(newConcurrentHashMap<>(64));// 这个方法是BeanFactoryPostProcessor的方法,它在容器的BeanFactory准备完成后,会执行此后置处理器// 它的作用:BeanFactory工厂准备好后,就去找所有的EventListenerFactory 然后保存起来// 此处:默认情况下Spring在准备Bean工厂的时候,...
classes); void installBeforePublishEventInterceptor(BeforePublishEventInterceptor interceptor, Class<? extends Event>...classes); } 接口的命名语义较为清晰,在这里不多做解释。开始我们的源码阅读之旅。 源码解读 CloudBus在ZStack Starting的时候做了什么? init init是在bean处于加载器,Spring提供的一个钩子。
// An unresolvable type in a method signature, probably from a lazy bean - let's ignore it. if (logger.isDebugEnabled()) { logger.debug("Could not resolve methods for bean with name '" + beanName + "'", ex); } } if (CollectionUtils.isEmpty(annotatedMethods)) { this.nonAnnotatedCl...
All Classes Summary: Nested | Field | Constr | Method Detail: Field | Constr | Method javafx.event Class Eventjava.lang.Object java.util.EventObject javafx.event.Event All Implemented Interfaces:Serializable, CloneableDirect Known Subclasses: ActionEvent, CheckBoxTreeItem.TreeModificationEvent, Dialog...
All Classes SEARCH: Summary: Nested | Field | Constr | Method Detail: Field | Constr | Method Module java.desktop Package java.awt.event Class KeyEvent java.lang.Object java.util.EventObject java.awt.AWTEvent java.awt.event.ComponentEvent java.awt.event.InputEvent java.awt.event.KeyEvent ...
Additionally, a set of model classes for the various system event data are defined in package com.azure.messaging.eventgrid.systemevents. You can do the following after you deserialize an event by using EventGridEvent.fromString() or CloudEvent.fromString(): look up the system event data ...
进入第一行的getListeners方法,它从Environment中获取了context.listener.classes属性,我们可以在这个属性中配置一些自定义的监听器,获取到类名后实例化,返回实例化后的监听器列表 1privateList<ApplicationListener<ApplicationEvent>>getListeners(ConfigurableEnvironment environment) {2if(environment ==null) {3returnCollect...
if (name.startsWith("java.") || name.startsWith("javax.") || name.startsWith("android.")) { // Skip system classes, this just degrades performance break; } // Starting with EventBus 2.2 we enforced methods to be public (might change with annotations again) ...
@Configuration public class Config { @EventListener(classes = {ApplicationEvent.class}) public void listen(ApplicationEvent event) { System.out.println("事件触发:" + event.getClass().getName()); } } 3.1 自定义事件及监听 不用每次都去实现ApplicationListener,可在一个class中定义多个方法,用@Event...