Spring ProxyFactoryBean注入问题

Question

I have a ProxyFactoryBean bean :

<bean id="sendSingleSmsServiceProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
   <property name="target">
      <ref bean="sendSingleSmsServiceImpl" />
   </property>
   <property name="proxyInterfaces">
      <value>com.test.SendSingleSmsService</value>
   </property>
   <property name="interceptorNames">
      <value>hibernateInterceptor</value>
   </property>
</bean>

and I'm trying to inject this bean into another one with @Resource annotation here is my code for that :

@Resource
public ProxyFactoryBean sendSingleSmsServiceProxy;

but I get this exception :

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.test.webservice.impl.SendSingleSmsImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'sendSingleSmsServiceProxy' must be of type [org.springframework.aop.framework.ProxyFactoryBean], but was actually of type [$Proxy24]

any help would be appreciated.

Answer 1

This is a mis-understanding in what ProxyFactoryBean does. Like all implewntations of FactoryBean , the bean that is generated is not the type of the FactoryBean , but the type of whatever bean the factory generates ( see Spring docs )

In your case, the sendSingleSmsServiceProxy bean is going to be of type SendSingleSmsService :

@Resource
public SendSingleSmsService sendSingleSmsService;

The ProxyFactoryBean object is effectively transparent, what you see is whatever it generates.