2021-11-07 Service层注解@Service失败原因及解决办法

2021-11-07 Service层注解@Service失败原因及解决办法 Service层注解@Service失败原因及解决办法 直接上报错代码

Error creating bean with name 'com.mp.mybatis.MybatisApplicationTests': Unsatisfied dependency expressed through field 'userService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.mp.service.UserService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

报错原因分析：

1、Service层没有添加@Service注解

2、有@Service仍然报错

解决办法：

在SpringBoot的启动类@SpringBootApplication上添加scanbasePackages = {“com.mp.service”}，扫描Service层

@SpringBootApplication(scanbasePackages = {"com.mp.service"})