Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/alibaba/druid/spring/boot/autoconfigure/DruidDataSourceAutoConfigure.class]: Invocation of init method failed; nested exception is com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
在引入common时
排除跟数据库有关的自动配置
