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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;}@Overridepublic void destroy() throws Exception {// TODO Auto-generated method stubSystem.out.println("I'm init method using implements InitializingBean interface...."+message);}@Overridepublic void afterPropertiesSet() throws Exception {// TODO Auto-generated method stubSystem.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
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