No qualifying bean of type ‘java.lang.Long‘ available: expected at least 1 bean which qualifies as a

记一次bean报错;
No qualifying bean of type ‘java.lang.Long’ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}

正常情况下应该会给出bean的具体名称和类型，然后提示没有匹配到。而这次只有这么一句错误。

原因：有一个空的注解@Resource，idea这货在编译的时候居然不报错，所以代码还是要多检查检查，不然搞你心态没商量

   	@Resource

    @Override
    public List report(Long registrationId) {}