bean spring 生命周期执行顺序

 

<?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 id="user" class="com.gyf.model.User" init-method="myInit" destroy-method="myDestroy">
        <property name="username" value="gyf"></property>
        <property name="password" value="123"></property>
    </bean>

    <!-- 配置bean处理器 -->
    <bean id="beanProcess" class="com.gyf.model.MyBeanPostProcessor"></bean>
</beans>

 

package com.gyf.model;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.*;

public class User implements BeanNameAware,BeanFactoryAware,InitializingBean,DisposableBean{

    private String username;
    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        System.out.println("2.赋值属性:" + username);
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public User() {
        System.out.println("1.实例化....");
    }

    @Override
    public String toString() {
        return "User{" +
                "username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }

    @Override
    public void setBeanName(String s) {
        System.out.println("3.设置bean名字:" + s);
    }


    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        //把对象放进工厂，放进容器
        System.out.println("4.bean工厂:" + beanFactory);
    }

    @Override
    public void afterPropertiesSet() throws Exception {

        System.out.println("6.属性赋值完成...");
    }

    public  void myInit(){
        System.out.println("7.自定义的初始化方法...");
    }

    @Override
    public void destroy() throws Exception {
        //资源释放
        System.out.println("9.bean被销毁");
    }

    public void myDestroy(){
        //资源释放
        System.out.println("10.自定义的销毁方法");
    }
}

package com.gyf.model;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;

public class MyBeanPostProcessor implements BeanPostProcessor {
    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        //这边可以用于多个对象共同的事情的处理
        System.out.println("5:预处理:" + bean + ":" + beanName);
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("8:后处理:" + bean + ":" + beanName);
        return bean;
    }
}