生命周期

• 定义
• 初始化
• 使用
• 销毁

方法

初始化、销毁

1. 实现接口InitializingBean, DisposableBean

public class BeanLifeCycle implements InitializingBean, DisposableBean{
@Override
    public void destroy() throws Exception {
        System.out.println("Bean destroy.");
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("Bean afterPropertiesSet.");
    }
}

2. xml配置 init-method="start" destroy-method="stop"

 <bean id="beanLifeCycle" class="com.imooc.lifecycle.BeanLifeCycle"  init-method="start" destroy-method="stop"></bean>

default-init-method="defautInit" default-destroy-method="defaultDestroy"

    public void defautInit() {
        System.out.println("Bean defautInit.");
    }
    
    public void defaultDestroy() {
        System.out.println("Bean defaultDestroy.");
    }