实例化bean

<bean id="personService2" class="com.maple.service.impl.PersonServiceBeanFactory"
     factory-method="createPersonServiceBean"></bean>
     
     <bean id="personServiceFactory" class="com.maple.service.impl.PersonServiceBeanFactory"></bean>
     <bean id="personService3" factory-bean="personServiceFactory"
     factory-method="createPersonServiceBean2"></bean>