<?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" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<!--第一种，最常见 --> <bean id="personService" class="com.clannan.service.impl.PersonServiceBean"></bean>
<!--第二种，工厂静态方法 --> <bean id="personService1" class="com.clannan.service.impl.PersonServiceBeanFactory" factory-method="createPersonServiceBean"></bean>
<!--第三种，工厂方法 --> <bean id="personServicebeanFactory" class="com.clannan.service.impl.PersonServiceBeanFactory"></bean> <bean id="personService2" factory-bean="personServicebeanFactory" factory-method="createnewPersonServiceBean"></bean> </beans>
有一个奇怪的情况，就是这样配置之后，只要实例化 ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");
就会调用personServicebeanFactory里面的静态和动态创建personService的方法。这是为什么呢？
难道是spring会通过这两个方法创建两个实例，形成了单例的模式？也许是这样吧。
------------------------------------------------------------------------------------------------
11:47补充
spring确实会在初始化时候就创建一个对象形成单例模式，如果不设置bean的scope属性的话。
scope属性有：prototype，每次都会新建，request，session，globle session
