何时在Spring中使用javax.inject.Provider？

该接口与寻找原型实例时

org.springframework.beans.factory.ObjectFactory<T>

BeanFactory.getBean()

ObjectFactoryCreatingFactoryBean

BeanFactory

来自

ObjectFactoryCreatingFactoryBean

<beans>   <!-- Prototype bean since we have state -->   <bean id="myService"  scope="prototype"/>   <bean id="myServiceFactory"       >     <property name="targetBeanName"><idref local="myService"/></property>   </bean>   <bean id="clientBean" >     <property name="myServiceFactory" ref="myServiceFactory"/>   </bean></beans>

使用

Providers

ProviderCreatingFactoryBean

解决相同问题的另一个选择（使用继承代替合成）是
查找方法注入