【Spring源码解析】生命周期-BeanPostProcessor-后置处理器

前言

@Component
public class CustomBeanPostProcessor implements BeanPostProcessor {

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("postProcessBeforeInitialization..." + beanName);
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("postProcessAfterInitialization..." + beanName);
        return bean;
    }
}

/**
 * postProcessBeforeInitialization...beanConfigOfLifeCycle
 * postProcessAfterInitialization...beanConfigOfLifeCycle
 * cat constructor...
 * postProcessBeforeInitialization...cat
 * cat init...
 * postProcessAfterInitialization...cat
 * dog constructor...
 * postProcessBeforeInitialization...dog
 * dog init...
 * postProcessAfterInitialization...dog
 * car constructor...
 * postProcessBeforeInitialization...car
 * car init...
 * postProcessAfterInitialization...car
 * 容器创建完成
 * car destory...
 * dog destroy...
 * cat destroy...
 */
@Test
public void test07() {
    AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(BeanConfigOfLifeCycle.class);
    System.out.println("容器创建完成");

    // 关闭容器
    applicationContext.close();
}

最后

本篇到此结束，欢迎大家关注公众号【当我遇上你】。