springBoot项目启动失败，
报错信息如下：
Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled.
2019-12-08 17:25:19.479 ERROR 18160 — [ main] o.s.b.d.LoggingFailureAnalysisReporter :
APPLICATION FAILED TO START
Description:
Field userService in com.ultrapower.wuyongchang.controller.UserController required a bean of type ‘com.ultrapower.wuyongchang.service.UserService’ that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type ‘com.ultrapower.wuyongchang.service.UserService’ in your configuration.
Disconnected from the target VM, address: ‘127.0.0.1:61432’, transport: ‘socket’
在报错信息中，加粗的内容为我们写代码时，导致出现的问题所在！
回头看发现没有加相应的注解
@Service
@Slf4j
@Transactional(rollbackFor = Exception.class)
我现在加上
查看运行结果，还是不行，
最后我在启动类里加上下面这注解就OK了
@MapperScan(value=“com.ultrapower.wuyongchang.mapper”)
