Cannot determine embedded database driver class for database type NONE

今天有个小程序打算用spring boot重构，从其他项目复制过来配置后，启动报错

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APPLICATION FAILED TO START
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Description:
Cannot determine embedded database driver class for database type NONE
Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

看报错，是没有数据库DataSource配置了，但是哪里会调用呢，检查后发现是pom文件里，依赖了mybatis

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>${mybatis.version}</version>
</dependency>

把mybatis依赖删除，更新项目后 ，再次启动，成功。具体原因后续研究，可能启动spring boot的时候，mybatis会初始化数据库连接吧