mybatis databaseId

https://mybatis.org/mybatis-3/configuration.html#databaseIdProvider

https://github.com/mybatis/spring-boot-starter/blob/master/mybatis-spring-boot-autoconfigure/src/test/java/org/mybatis/spring/boot/autoconfigure/MybatisAutoConfigurationTest.java

https://github.com/mybatis/spring-boot-starter/blob/master/mybatis-spring-boot-autoconfigure/src/main/java/org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.java

可以使用mybatis plus配置

mybatis-plus:
  configuration:
    # oracle mysql
    database-id: oracle