在logback.xml里加入如下配置即可：
<include resource="org/springframework/boot/logging/logback/base.xml"/>
<logger name="org.springframework.jdbc.core" additivity="false" level="DEBUG" >
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE" />
</logger>原文：https://www.cnblogs.com/-llf/p/11905924.html