spring aop 注解报错

Question

使用Spring aop实现一个小例子，依赖注入使用注解实现，但是总是报错，信息如下：

严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@4df828d7] to prepare test instance [com.zkzong.springinaction.springidol.AopAnnoTest@5e01a982]

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'com.zkzong.springinaction.springidol.AopAnnoTest': Unsatisfied dependency expressed through field 'performer': Bean named 'instrumentalistAnno' is expected to be of type [com.zkzong.springinaction.springidol.InstrumentalistAnno] but was actually of type [com.sun.proxy.$Proxy15]; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'instrumentalistAnno' is expected to be of type [com.zkzong.springinaction.springidol.InstrumentalistAnno] but was actually of type [com.sun.proxy.$Proxy15]

    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)

    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)

    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:385)

    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118)

    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)

Answer 1

注入的类型不对，请检查一下类的派生关系