package com.tfjy.test2;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
/**
 * @BelongsProject: demo
 * @BelongsPackage: com.tfjy.test2
 * @Author: aqiu
 * @Description: 自定义的后处理器
 * @CreateTime: 2023-01-29 20:54
 * @Version: 1.0
 */
public class MyBeanPostProcessor implements BeanPostProcessor {
    //前置处理器，bean对象初始化前的动作
    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("5.BeanPostProcessor.postProcessBeforeInitialization方法：bean对象初始化之前的动作");
        return bean;
    }
    //后置处理器，创建bean对象结束后走这里
    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("8.BeanPostProcessor#postProcessAfterInitialization方法：bean对象初始化之后的动作");
        return bean;
    }
}

package com.tfjy.test2;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.*;
/**
 * @BelongsProject: demo
 * @BelongsPackage: com.tfjy.test2
 * @Author: aqiu
 * @Description: Bean的生命周期
 * @CreateTime: 2023-01-29 20:53
 * @Version: 1.0
 */
public class PersonBean implements InitializingBean, BeanFactoryAware, BeanNameAware, DisposableBean {
    /**
     * 身份证号
     */
    private Integer no;
    /**
     * 姓名
     */
    private String name;
    //最先走的方法就是调用构造函数，创建具体对象
    public PersonBean() {
        System.out.println("1.调用构造方法：我出生了！");
    }
    public Integer getNo() {
        return no;
    }
    public void setNo(Integer no) {
        this.no = no;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
        System.out.println("2.设置属性：我的名字叫" + name);
    }
    //BeanNameAware接口，通过这个接口设置bean的id
    @Override
    public void setBeanName(String s) {
        System.out.println("3.调用BeanNameAware#setBeanName方法:我的bean的名字叫做" + s);
    }
    //    BeanFactoryAware 用于注入BeanFactory对象，能访问创建对象的BeanFactory。
    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        System.out.println("4.调用BeanFactoryAware#setBeanFactory方法：注入BeanFactory对象");
    }
    //    InitializingBean 接口
    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("6.InitializingBean#afterPropertiesSet方法：开始初始化");
    }
    //在创建bean的时候，会走这个对应的初始化方法
    public void init() {
        System.out.println("7.自定义init方法：自定义初始化");
    }
    //销毁一个bean对象
    @Override
    public void destroy() throws Exception {
        System.out.println("9.DisposableBean#destroy方法：开始销毁");
    }
    public void destroyMethod() {
        System.out.println("10.自定义destroy方法:自定义销毁");
    }
    public void work() {
        System.out.println("Bean使用中~~~~");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean name="myBeanPostProcessor" class="com.tfjy.test2.MyBeanPostProcessor" />
    <bean name="personBean" class="com.tfjy.test2.PersonBean"
          init-method="init" destroy-method="destroyMethod">
        <property name="no" value= "666666"/>
        <property name="name" value="妞妞" />
    </bean>
</beans>

import com.tfjy.test2.PersonBean;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
 * @BelongsProject: demo
 * @Author: aqiu
 * @Description: Bean的生命周期测试类
 * @CreateTime: 2023-01-29 20:55
 * @Version: 1.0
 */
public class Test2 {
    @Test
    public void  test2(){
        ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml");
        PersonBean personBean = (PersonBean) context.getBean("personBean");
        //开始使用
        personBean.work();
        //开始销毁
        ((ClassPathXmlApplicationContext) context).close();
    }
}