Spring中如何对初始化和销毁bean之前进行相应操作呢?

实现思路:
    方式1: 
	  使用@PostConstruct @PreDestroy注解 即可完成初始化和销毁前进行相应的操作
	方式2:
      使用xml定义init-method和destory-method方法,完成bean的初始化和销毁前操作
	方式3:
      使用bean实现InitializingBean和DisposableBean接口  

使用@PostConstruct @PreDestroy注解实现初始化和销毁bean之前进行操作

 @PostConstruct
   和
 @PreDestroy注解
 并不是spring
  而是JAVAEE的

<dependency>
   <groupId>javax.annotation</groupId>
   <artifactId>javax.annotation-api</artifactId>
   <version>1.3.2</version>
</dependency>

bean定义
package com.java265.core.annotation.init;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
public class PersonService {
	private String  message;
 
	public String getMessage() {
		return message;
	}
 
	public void setMessage(String message) {
		this.message = message;
	}
	
	@PostConstruct
	public void  init(){
		System.out.println("初始化方法 @PostConstrut...."+message);
	}
	
	@PreDestroy
	public void  dostory(){
		System.out.println("销毁方法  @PreDestroy....."+message);
	}
}

spring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">
<bean id="personService" class="com.java265.core.annotation.init.PersonService">
  <property name="java265" value="88888"></property>
</bean>
</beans>

测试类
package com.java265.core.annotation.init;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainTest {
	public static void main(String[] args) {
		ApplicationContext  context = new ClassPathXmlApplicationContext("resource/annotation.xml");
		PersonService   personService  =  (PersonService)context.getBean("personService");	
		personService.dostory();
	}
}

------运行以上代码,将输出以下信息
初始化方法  @PostConstrut....88888
销毁方法  @PreDestroy.....88888