springbean实例化-preInstantiateSingletons

开始preInstantiateSingletons()

遍历beanNames

获取beanDefinition名称List<String> beanNames = new ArrayList<>(this.beanDefinitionNames)

是

获取合并后的beanDefinitionRootBeanDefinition bd = getMergedLocalBeanDefinition(beanName);

否

获取实例化后的单例beanObject singletonInstance = getSingleton(beanName);

判断是否提前实例化

判断是否实现了SmartInitializingSingleton

回调SmartInitializingSingleton.afterSingletonsInstantiated()

结束

判断是否是factoryBeanisFactoryBean(beanName)

实例化工厂beanObject bean = getBean(FACTORY_BEAN_PREFIX + beanName)

实例化bean

判断beanDefinition是否满足以下条件非抽象且非懒加载单例的