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错误信息
APPLICATION FAILED TO START
Description:
The bean ‘dataSource’, defined in BeanDefinition defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class] and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
解决方案 1：
SpringBoot 和 SpringCloud 的版本不兼容造成。
解决方案 2：
spring.main.allow-bean-definition-overriding=true
解决方案 3：
Maven 谬误