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：通过 在xml中定义init-method 和 destory-method方法 第三种： 通过bean实现InitializingBean和 DisposableBean接口
演示第一种：
package com.myapp.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("I'm init method using @PostConstrut...."+message); } @PreDestroy public void dostory(){ System.out.println("I'm destory method using @PreDestroy....."+message); } }2：定义相关的配置文件：
<?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 id="personService" class="com.myapp.core.annotation.init.PersonService"> <property name="message" value="123"></property> </bean> </beans>package com.myapp.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(); } }
测试结果：
I'm init method using @PostConstrut....123 I'm destory method using @PreDestroy.....123
