AI代码解释 /** Spring容器的事件广播器对象*/privateApplicationEventMulticaster applicationEventMulticaster;/** 事件广播器对应的beanName*/publicstaticfinal StringAPPLICATION_EVENT_MULTICASTER_BEAN_NAME="applicationEventMulticaster";/** 初始化事件广播器*/protectedvoidinitApplicationEventMulticaster(){//1.获...
String[]listenerBeanNames=getBeanNamesForType(ApplicationListener.class,true,false);for(String listenerBeanName:listenerBeanNames){getApplicationEventMulticaster().addApplicationListenerBean(listenerBeanName);}// Publish early application events now that we finally have a multicaster...Set<ApplicationEvent>e...
}// Add listeners by bean name, potentially overlapping with programmatically// registered listeners above - but here potentially with additional metadata.if(!listenerBeans.isEmpty()) {ConfigurableBeanFactorybeanFactory=getBeanFactory();for(String listenerBeanName : listenerBeans) {try{if(supportsEvent(be...
这个方法也是用来解决循环依赖问题的,这里的addSingletonFactory会将生产该对象的工厂类singletonFactory放入到名为singletonFactories的HashMap中,而工厂类singletonFactory的函数式方法实现,主要就是调用getEarlyBeanReference(beanName, mbd, bean)。
二、所有的非懒加载的单例bean创建完成之后,执行单例实例化之后的方法; 二、创建非懒加载的单例Bean // Trigger initialization of all non-lazy singleton beans...for(String beanName : beanNames) {RootBeanDefinitionbd=getMergedLocalBeanDefinition(beanName);if(!bd.isAbstract() && bd.isSingleton() &&...
一个spring应用可以通过BeanDefinitionRegistry类中的registerBeanDefinition方法动态注入bean void registerBeanDefinition(String beanName, BeanDefinition beanDefinition 2.1 BeanDefinition BeanDefinition describes a bean instance. It has setter methods that can be used to programmatically set the Spring specific char...
执行AbstractApplicationContext.initApplicationEventMulticaster() 方法时会实例化一个bean name为applicationEventMulticaster的SimpleApplicationEventMulticaster,它的父类实现了前5个方法依靠一个内部类ListenerRetriever维护了一个Set<ApplicationListener<?>>,本质事件监听器的注册或移除就是对这个Set的添加和移除操作。 publ...
* {@code BeanPostProcessor} beans that are registered programmatically with a * {@code BeanFactory} will be applied in the order of registration; any ordering * semantics expressed through implementing the * {@code PriorityOrdered} or {@code Ordered} interface will be ignored for ...
前面几篇介绍了对XML配置文件的解析,接下来就是bean的加载过程。bean的加载实现比bean的解析要复杂的多 bf.getBean功能调用的源码如下: 以上加载过程的步骤大致如下 1、转换对应beanName… 时光飞逝of 学习编程|Spring源码深度解析 读书笔记 第4章:bean的加载 作者:牛客张学友_ 链接: https://www.nowcoder.com/pr...
User user = (User) applicationContext.getBean("userBean"); System.out.println(user.getUserName()); 从上面的例子我们看到,Bean主要是applicationContext.getBean()方法来获取的,我们就从ClassPathXmlApplicationContext的getBean方法来入手 public Object getBean(String name) throws BeansException { ...