转载至:https://blog.csdn.net/wyw815514636/article/details/80846545 https://blog.csdn.net/knqi007/article/details/83997634 如果我们用SpringBoot实现一个简单的微服务,不需要数据库,你会发现在写完代码启动时会报org.springframework.beans.factory.BeanCreationException: Error creating bean with na