Spring_IOC 架构

注意点

• BeanFactoryPostProcessor beandefinition 阶段

  package com.Spring.Boot.init;
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
  import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
  import org.springframework.stereotype.Component;
  /**
   * 扩展方法--后置增强器（可修改bean的定义信息）
   */
  @Component
  public class ExtBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
      @Override
      public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
  //        BeanDefinition studentService = beanFactory.getBeanDefinition("studentService");
          System.out.println("扩展方法--可进行修改beanDefinition的定义信息");
      }
  }
  

• BeanPostProcessor bean 初始化阶段