【spring源码学习】@Aspect 实现切面代码的原理

一、spring-boot框架中的应用

1、服务启动时,会加载spring-boot-autoconfigure的jar中spring.factories文件,加载服务启动自动装配的类

2、关于动态代理的装配类为

org.springframework.boot.autoconfigure.EnableAutoConfiguration=org.springframework.boot.autoconfigure.aop.AopAutoConfiguration
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3、会导入注解@EnableAspectJAutoProxy,导入注解后,会引入org.springframework.context.annotation.AspectJAutoProxyRegistrar

4、3中的类会向spring容器中注入:org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator

二、spring容器中bean:AnnotationAwareAspectJAutoProxyCreator

org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator

该类是org.springframework.beans.factory.config.BeanPostProcessor接口的实现,在spring容器创建bean的时候,会调用该类的方式识别bean是否需要被代理。

遵循spring-aop的规范

advice中隐藏了代理的逻辑

advisor:

org.springframework.aop.aspectj.annotation.InstantiationModelAwarePointcutAdvisorImpl

pointcut:

org.springframework.aop.aspectj.AspectJExpressionPointcut

advice:

org.springframework.aop.aspectj.AspectJMethodBeforeAdvice

org.springframework.aop.aspectj.AspectJAroundAdvice

org.springframework.aop.aspectj.AspectJAfterAdvice

org.springframework.aop.aspectj.AspectJAfterThrowingAdvice

org.springframework.aop.aspectj.AspectJAfterReturningAdvice

原文地址:https://www.cnblogs.com/shangxiaofei/p/14309067.html