Spring-IOC学习-Prototype reference inside a Singleton

 

Prototype reference inside a Singleton

 

在Spring容器中，如果定义了一个Singleton作用域的Bean，但是属性Bean是一个prototype作用域的，会怎么样？

如果按照平常类似<bean></bean>的格式注入，是不可以。唯一的办法是将prototype这个Bean对象改成ProxyBean。

 

<bean name="bookServiceBean" id="bookServiceBean" class="spring.test.xmlBeanFactory.bean.BookServiceBean" scope="prototype"></bean> <bean name="penServiceBean" class="spring.test.xmlBeanFactory.bean.PenServiceBean"></bean> <bean name="toolServiceBean" class="spring.test.xmlBeanFactory.bean.StudyToolServiceBean"> <property name="bookServiceBean" ref="proxyBean" /> </bean> <bean id="prototypeTargetSource" class="org.springframework.aop.target.PrototypeTargetSource"> <property name="targetBeanName" value="bookServiceBean" /> </bean> <bean id="proxyBean" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="targetSource" ref="prototypeTargetSource" /> </bean>

 

 

Spring还有一种MethodInject的方式 具体可以看：http://static.springsource.org/spring/docs/2.5.x/reference/beans.html#beans-factory-method-injection