测试Service层的时候出现错误

Error creating bean with name 'com.imooc.demo.service.impl.AreaServiceTest': Unsatisfied dependency expressed through field 'areaService'; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'areaService' is expected to be of type 'com.imooc.demo.service.impl.AreaService' but was actually of type 'com.sun.proxy.$Proxy72'