Spring bean 属性注入的主要接口调用链

1、属性注入方法入口 

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory#populateBean

2、主要的调用链（由外到内）

# （1）CommonAnnotationBeanPostProcessor
org.springframework.context.annotation.CommonAnnotationBeanPostProcessor#postProcessProperties


# （2）Injectionmetadata
org.springframework.beans.factory.annotation.Injectionmetadata#inject

org.springframework.beans.factory.annotation.Injectionmetadata.InjectedElement#inject

# （3）CommonAnnotationBeanPostProcessor
org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.ResourceElement#getResourceToInject

org.springframework.context.annotation.CommonAnnotationBeanPostProcessor#getResource

org.springframework.context.annotation.CommonAnnotationBeanPostProcessor#autowireResource

# （4）DefaultListableBeanFactory
org.springframework.beans.factory.support.DefaultListableBeanFactory#resolveDependency

org.springframework.beans.factory.support.DefaultListableBeanFactory#doResolveDependency

org.springframework.beans.factory.support.DefaultListableBeanFactory#findAutowireCandidates

org.springframework.beans.factory.support.DefaultListableBeanFactory#addCandidateEntry

# （5）AbstractBeanFactory
org.springframework.beans.factory.support.AbstractBeanFactory#getType(java.lang.String)

org.springframework.beans.factory.support.AbstractBeanFactory#getType(java.lang.String, boolean)

org.springframework.beans.factory.support.AbstractBeanFactory#predictBeanType

        # （6）获取依赖对象实例

org.springframework.beans.factory.config.DependencyDescriptor#resolveCandidate

org.springframework.beans.factory.support.AbstractBeanFactory#getBean(java.lang.String)

org.springframework.beans.factory.support.AbstractBeanFactory#doGetBean

        # （7）设置依赖对象的值

Field field = (Field) this.member;

ReflectionUtils.makeAccessible(field);

field.set(target, getResourceToInject(target, requestingBeanName));