Springboot源码 AbstractAdvisorAutoProxyCreator解析

  package com.github.dqqzj.springboot.aop;  
  import org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator;
  import org.springframework.stereotype.Component;  
  import javax.annotation.PostConstruct;  
  /**
   * @author qinzhongjian
   * @date created in 2019-08-25 09:43
   * @description: TODO
   * @since JDK 1.8.0_212-b10
   */
  @Component
  public class MyBeanNameAutoProxyCreator extends BeanNameAutoProxyCreator {
    @PostConstruct
    public void init() {
      super.setBeanNames("aopService", "abstractAutoProxyCreatorService");
      super.setInterceptorNames("myMethodBeforeAdvice");
    }  
  }

  // 手动注册一个自动代理创建器，且名字务必叫AopConfigUtils.AUTO_PROXY_CREATOR_BEAN_NAME
  @Bean(AopConfigUtils.AUTO_PROXY_CREATOR_BEAN_NAME) 
  public BeanNameAutoProxyCreator beanNameAutoProxyCreator() {
    ...
  }

  public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
      implements SmartInstantiationAwareBeanPostProcessor, BeanFactoryAware {
      ...
  }

  try {
        // Give BeanPostProcessors a chance to return a proxy instead of the target bean instance.
        Object bean = resolveBeforeInstantiation(beanName, mbdToUse);
        if (bean != null) {
          return bean;
        }
      }

  package com.github.dqqzj.springboot.aop;
  
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
  
  /**
   * @author qinzhongjian
   * @date created in 2019-08-25 11:35
   * @description: TODO
   * @since JDK 1.8.0_212-b10
   */
  public class AopServiceInstantiationAwareBeanPostProcessor implements InstantiationAwareBeanPostProcessor {
    @Override
    public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException {
      if (beanClass.isInstance(AopService.class)) {
        return new AopService();
      }
      return null;
    }
    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
      return bean;
    }
  }