异常

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2021-06-13 13:18:55.548 ERROR 79340 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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APPLICATION FAILED TO START
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Description:

Field service in com.demo.springcloud.controller.Controller required a bean of type 'com.demo.springcloud.service.DeptService' that could not be found.


Action:

Consider defining a bean of type 'com.demo.springcloud.service.DeptService' in your configuration.

原因

在控制器类中注入了DeptService类

但是DeptService并没有注册成为Bean，交由Spring容器管理。

解决

在DeptService接口的实现类上添加@Service注解，注册成为Bean。