spring为实现Aware接口的自动设置相关属性的操作

AbstractApplicationContext.refresh->finishBeanFactoryInitialization->beanFactory.preInstantiateSingletons()->getBean->doGetBean->getSingleton->singletonFactory.getObject()->createBean->doCreateBean->initializeBean

1. initializeBean的时候调用invokeAwareMethods(beanName, bean);(org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(String, Object, RootBeanDefinition)) 
这时会： 
1.1 调用BeanNameAware的setBeanName(beanName)方法 
1.2 调用BeanClassLoaderAwarere的setBeanClassLoader(getBeanClassLoader())方法 
1.3 调用BeanFactoryAware的setBeanFactory(AbstractAutowireCapableBeanFactory(AbstractAutowireCapableBeanFactory.this)方法 

2 initializeBean的时候调用applyBeanPostProcessorsBeforeInitialization(wrappedBean, beanName)，获取BeanPostProcessors，然后遍历调用每个posetProcessor的postProcessBeforeInitialization方法；org.springframework.context.support.ApplicationContextAwareProcessor的postProcessBeforeInitialization(Object, String)方法会执行invokeAwareInterfaces(bean) 
这时会： 
2.1 调用EnvironmentAware的setEnvironment(this.applicationContext.getEnvironment())方法 
2.2 调用EmbeddedValueResolverAware的setEmbeddedValueResolver(new EmbeddedValueResolver(this.applicationContext.getBeanFactory())方法 
2.3 调用ResourceLoaderAware的setResourceLoader(this.applicationContext)方法 
2.4 调用ApplicationEventPublisherAware的setApplicationEventPublisher(this.applicationContext)方法 
2.5 调用MessageSourceAware的setMessageSource(this.applicationContext)方法 
2.6 调用ApplicationContextAware的setApplicationContext(this.applicationContext)方法 
org.springframework.web.context.support.ServletContextAwareProcessor的postProcessBeforeInitialization(Object, String)中会完成： 
2.7 调用ServletContextAware的setServletContext(getServletContext())方法 
2.8 调用ServletConfigAware的setServletConfig(getServletConfig())方法

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