为什么这里要加个@Service？

Question

为什么这里要加个@Service才可以解决
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘shopServiceTest’: Unsatisfied dependency expressed through field ‘shopService’; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type ‘com.imooc.o2o.service.ShopService’ available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

这个问题？

Answer 1

翔仔 2021-04-09 23:11:02

同学好，如果不加@Service的话，spring容器就不知道什么类需要当作bean管理在容器里面了，加了@Service相当于是一种标记，让spring容器管理起来，方便@Autowired进行注入

• 提问者 慕斯卡7059763 #1

  非常感谢！

Answer 2

慕运维4052793 2021-05-30 22:43:55

麻烦你先学学SSM吧 这是SSM最基础的东西了