<context:annotation-config/>
解析上面标签,运行下面解析
AnnotationConfigBeanDefinitioinParser implements BeanDefinitionParser{
public BeanDefinition parse(Element element, ParserContext parserContext) {
AnnotationConfigUtils.registerAnnotationConfigProcessor();
}
}
自动注册ConfigurationClassPostProcessor, AutowiredAnnotationBeanPostProcessor, RequiredAnnotationBeanPostProcessor,
CommonAnnotationBeanPostProcessor等类到BeanDefinition
AutowiredAnnotationBeanPostProcessor类会处理Autowired和Value注解