bean的生命周期

配置文件

<?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的生命周期 -->
    <bean id="customerService" class="com.neuedu.demo6.CustomerServiceImpl"
        init-method="setup" destroy-method="teardown">
        <property name="name" value="neuedu"></property>
    </bean>
    <bean class="com.neuedu.demo6.MyBeanPostProcessor"></bean>
</beans>

接口

package com.neuedu.demo6;

public interface CustomerService {
    public void add();
    public void find();
}

实现类

package com.neuedu.demo6;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class CustomerServiceImpl implements CustomerService,BeanNameAware,ApplicationContextAware,InitializingBean,DisposableBean     {
    
    private String name;
    
    public CustomerServiceImpl(){
        System.out.println("第一步：实例化类");
    }
    
    public void setName(String name) {
        this.name = name;
        System.out.println("第二步：属性的注入");
    }

    

    public void add() {
        System.out.println("添加客户。。。");
    }

    public void find() {
        System.out.println("查询客户。。。");
    }

    @Override
    public void setBeanName(String bean) {
        System.out.println("第三步：注入配之类的名称"+bean);
    }

    @Override
    public void setApplicationContext(ApplicationContext arg0) throws BeansException {
        System.out.println("第四步：注入applicationContext"+arg0);
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("第六步：属性设置后执行");
    }

    public void setup(){
        System.out.println("第七步：调用手动设置的初始化方法");
    }

    @Override
    public void destroy() throws Exception {
        System.out.println("第十步：调用销毁方法");
    }
    
    public void teardown(){
        System.out.println("第十一步：调用手动销毁方法！！");
    }
}

初始化类

package com.neuedu.demo6;

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

public class MyBeanPostProcessor implements BeanPostProcessor {

    @Override
    public Object postProcessBeforeInitialization(Object bean, String arg1) throws BeansException {
        System.out.println("第五步：初始化之前执行");
        return bean;
    }
    
    @Override
    public Object postProcessAfterInitialization(Object bean, String arg1) throws BeansException {
        System.out.println("第八步：初始化之后执行");
        return bean;
    }

    

}

测试类

package com.neuedu.demo6;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class SpringTest6 {

    @Test
    public void demo1(){
        ClassPathXmlApplicationContext applicationContext = 
                new ClassPathXmlApplicationContext("applicationContext3.xml");
        CustomerService customerService = 
                (CustomerServiceImpl) applicationContext.getBean("customerService");
        customerService.add();
        customerService.find();
        applicationContext.close();
    }
    
    
}