知行合一，止于至善
千里之行，始于足下；合抱之木，生于毫末；九层之台，起于累土spring创建bean的过程
2月 5, 2018 |
Nix.Huang
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DefaultListableBeanFactory.preInstantiateSingletons() DefaultListableBeanFactory.getBean DefaultListableBeanFactory.doGetBean DefaultListableBeanFactory.getSingleton DefaultListableBeanFactory.beforeSingletonCreation DefaultListableBeanFactory.createBean DefaultListableBeanFactory.createBeanInstance MergedBeanDefinitionPostProcessor.postProcessMergedBeanDefinition DefaultListableBeanFactory.populateBean AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues InjectionMetadata.inject AutowiredFieldElement.inject DefaultListableBeanFactory.resolveDependency DefaultListableBeanFactory.doResolveDependency DefaultListableBeanFactory.findAutowireCandidates DefaultListableBeanFactory.getBean DefaultListableBeanFactory.initializeBean DefaultListableBeanFactory.invokeAwareMethods BeanPostProcessor.postProcessBeforeInitialization InitializingBean.afterPropertiesSet BeanPostProcessor.postProcessAfterInitialization DefaultListableBeanFactory.registerDisposableBeanIfNecessary DefaultListableBeanFactory.afterSingletonCreation |
在beforeSingletonCreation() 方法中将正在创建的bean 放入列表中， 创建完后在afterSingletonCreation中建创建的bean从列表中删除， 用于解决循环依赖
populateBean()方法中，通过调用AutowiredAnnotationBeanPostProcessor 来完成@autowired注解的处理
initializeBean() 方法中， 先执行Aware接口， 主要执行InitializingBean.afterPropertiesSet 方法，当然BeanPostProcessor对应的before和after方法也得以正确的执行
Posted in: spring practise
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