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

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:

<?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：

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：

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