你好，请教有关spring aop方面的问题。
我查询到这个资料，http://opensource2.atlassian.com/confluence/spring/display/DISC/Caching+the+result+of+methods+using+Spring+and+EHCache
可是在运行的时候，却碰到这样奇怪的错误
说Failed to convert property value of type [com.sscm.core.service.MethodCacheInterceptor] to required type [org.aopalliance.aop.Advice] for property 'advice'
public class MethodCacheInterceptor implements MethodInterceptor, InitializingBean
为什么会这样呢？
MethodInterceptor是Advice的子接口阿
Advice->Interceptor->MethodInterceptor
MethodCacheInterceptor实现的MethodInterceptor
按理说不应该这样啊。请问这是为什么?