Spring bean 通过实现 InitializingBean ,DisposableBean 接口实现初始化方法和销毁前操作

关于在spring 容器初始化 bean 和销毁前所做的操作定义方式有三种：

第一种：通过@PostConstruct 和 @PreDestroy 方法 实现初始化和销毁bean之前进行的操作

第二种是：通过 在xml中定义init-method 和 destory-method方法

第三种是： 通过bean实现InitializingBean和 DisposableBean接口

1：定义相应类实现InitializingBean ,DisposableBean 接口

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package com.myapp.core.annotation.init;



import javax.annotation.PostConstruct;

import javax.annotation.PreDestroy;



import org.springframework.beans.factory.DisposableBean;

import org.springframework.beans.factory.InitializingBean;



public class PersonService implements InitializingBean,DisposableBean{



private String message;



public String getMessage() {

return message;

}



public void setMessage(String message) {

this.message = message;

}



@Override

public void destroy() throws Exception {

// TODO Auto-generated method stub

System.out.println("I'm init method using implements InitializingBean interface...."+message);



}



@Override

public void afterPropertiesSet() throws Exception {

// TODO Auto-generated method stub

System.out.println("I'm init method using implements DisposableBean interface...."+message);



}





}

2：定义相应的配置文件:

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<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">



<!-- <context:component-scan base-package="com.myapp.core.jsr330"/> -->



<!-- <context:annotation-config /> -->





<!-- <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" />

<bean id="personService" class="com.myapp.core.annotation.init.PersonService">

<property name="message" value="123"></property>

</bean>

-->



<bean id="personService" class="com.myapp.core.annotation.init.PersonService">

<property name="message" value="123"></property>

</bean>



</beans>

3：测试类：

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package com.myapp.core.annotation.init;



import org.springframework.context.ApplicationContext;

import org.springframework.context.support.AbstractApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;



public class MainTest {



public static void main(String[] args) {



AbstractApplicationContext context = new ClassPathXmlApplicationContext("resource/annotation.xml");



PersonService personService = (PersonService)context.getBean("personService");



context.registerShutdownHook();

}



}

4：输出测试结果：

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I'm init method using implements DisposableBean interface....123

三月 16, 2013 5:06:34 下午 org.springframework.context.support.AbstractApplicationContext doClose

INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@205756: startup date [Sat Mar 16 17:06:30 CST 2013]; root of context hierarchy

I'm init method using implements InitializingBean interface....123

over