Spring指定Bean的初始化步骤和销毁方法

Spring指定Bean的初始化方法和销毁方法

package cn.itcast.service;

public interface PersonService {
	public void save();
}

 

package cn.itcast.service.impl;

import cn.itcast.service.PersonService;

public class PersonServiceBean implements PersonService {
	public void init() {
		System.out.println("初始化");
	}

	public PersonServiceBean() {
		System.out.println("我被实例化了");
	}

	public void save() {
		System.out.println("我是save()方法");
	}

	public void destory() {
		System.out.println("关闭打开的资源");
	}
}

 

 

package junit.test;

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

import cn.itcast.service.PersonService;

public class SpringTest {
	@Test public void instanceSpring(){
		AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
		//当lazy-init="true"时控制台没有任何信息，需要打开下面的注释
		//当lazy-init="false"时控制台打印    我被实例化了     初始化      关闭打开的资源
		//PersonService personService = (PersonService)ctx.getBean("personService");
		//personService.save();
		ctx.close();		
	}
}

 

<?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-2.5.xsd">
    <!-- lazy-init参数为true时只有第一次获取bean会才初始化bean -->
	<bean id="personService" class="cn.itcast.service.impl.PersonServiceBean"
		lazy-init="true" init-method="init" destroy-method="destory">
	</bean>
</beans>