转:https://blog.csdn.net/lizhiqiang1217/article/details/89950527
1、MainConfigOfLifeCycle
/**
* 4)、BeanPostProcessor【interface】:bean的后置处理器;
* 在bean初始化前后进行一些处理工作;
* postProcessBeforeInitialization:在初始化之前工作
* postProcessAfterInitialization:在初始化之后工作
*/
@ComponentScan("com.atguigu.bean")
@Configuration
public class MainConfigOfLifeCycle {
}
2、创建类MyBeanPostProcessor 。实现BeanPostProcessor 接口
/**
* 后置处理器:初始化前后进行处理工作
* 将后置处理器加入到容器中
*/
@Component
public class MyBeanPostProcessor implements BeanPostProcessor {
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
// TODO Auto-generated method stub
System.out.println("postProcessBeforeInitialization..."+beanName+"=>"+bean);
return bean;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
// TODO Auto-generated method stub
System.out.println("postProcessAfterInitialization..."+beanName+"=>"+bean);
return bean;
}
}
3、测试
@Test
public void test01(){
//1、创建ioc容器
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfLifeCycle.class);
System.out.println("容器创建完成...");
//关闭容器
applicationContext.close();
}
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