在使用mybatis-plus 生成代码后，出现如下错误
Description:
Field courseInfoService in required a single bean, but 2 were found:
- courseInfoServiceImpl: defined in file [D:\learning\xxxx\service\impl\]
- ICourseInfoService: defined in file [D:\learning\xxxx\service\]
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed
后发现是使用@MapperScan注释是没有设置扫描范围，
改为@MapperScan(basePackages = "xxx.*.*.mapper")后成功运行