package com.how2java.w3cschool.beanlife;public class HelloWorld {private String message;public void getMessage() {System.out.println("Your message:" + message);}public void setMessage(String message) {this.message = message;}public void init() {System.out.println("Bean is going through init");}public void destroy() {System.out.println("Bean will destory now");}}

package com.how2java.w3cschool.beanlife;                                                                                                           import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;                                                                         public class MainApp {                                                                                                                             public static void main(String[] args) {                                                                                                       AbstractApplicationContext context = new ClassPathXmlApplicationContext("beanlife.xml");                                                   HelloWorld obj = (HelloWorld) context.getBean("helloWorld"); //getBean是用来获取applicationContext.xml文件里bean的,括号内写的是对应的bean的id
        obj.getMessage();                                                                                                                          context.registerShutdownHook();  //需要注册一个在 AbstractApplicationContext 类中声明的关闭 hook 的 registerShutdownHook() 方法。它将确保正常关闭，并且调用相关的 destroy 方法。                                                                                                     }
}                                                                                                                                                  

<?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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.0.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/context     http://www.springframework.org/schema/context/spring-context-3.0.xsd"><bean id = "helloWorld"class = "com.how2java.w3cschool.beanlife.HelloWorld"init-method="init" destroy-method="destroy"> <property name="message" value ="Hello World!"></property></bean><!-- init-method 属性指定一个方法，在实例化 bean 时，立即调用该方法,destroy-method 指定一个方法，只有从容器中移除 bean 之后，才能调用该方法。并且，上面指定bean对应的类为 HelloWorld，因此会到该bean(类)下去找对应的方法并调用--></beans>