用springboot整合feign，启动后报错误

feign could not be registered. A bean with that name has already been defined and overriding is disabled

这怎么回事呢？明明只有

@FeignClient(name="stock-service",path="/stock")
public interface StockService {
    @RequestMapping("/reduce")
    public String reduce(Long merchId);
}

一个呀！

会不会是我拷贝的项目，然后class有缓存，maven clean一下就好了！

无了个大语！