Field xxxService in required a bean of type 'Service' that could not befound

Field xxxService in required a bean of type 'Service' that could not befound

springboot启动报错

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APPLICATION FAILED TO START

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Description:

Field customUserService in
com.ller.LoginController required a bean of
type ‘com.jz.springboooooot.service.CustomUserService’ that could not
be found.

Action:

Consider defining a bean of type
‘com.jz.springboooooot.service.CustomUserService’ in your
configuration.

猜测是因为service类注入mybatis接口出错，

给dao添加@component 和 @mapper 注解

	@Component@Mapperpublic interface UserDao{public SbUser findByUserName(String username);}

可以正常扫描到dao，重新启动依然报错，错误没变。

上网查发现可能是service类没有扫到。

在启动类添加注解@ComponentScan(“com.jz.springboooooot.service”)手动扫描service类
重新启动不报错，确定是s