配置文件 .yml中如下配置:

logging:
level:
com.muyan.mapper: debug #打印sql
config: classpath:logback.xml

logging标识配置日志

level: 

    xxx.xx.mapper:debug 对应的package开启日志输出

config 日志的配置使用classpath 下面的logback.xml

logback.xml

<?xml version="1.0" encoding="UTF-8" ?>
<configuration debug="true" scan="true" scanPeriod="30 seconds">
<contextName>commons</contextName>
<property resource="logback.properties" />

<appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
<prudent>false</prudent>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${file.dir}/${file.name}.%d{yyyy-MM-dd}.${file.ext}
</fileNamePattern>
<maxHistory>30</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%date %-5level %logger - %message%n
</pattern>
</encoder>
</appender>


<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<!--格式化输出:%d表示日期,%thread表示线程名,%-5level:级别从左显示5个字符宽度%msg:日志消息,%n是换行符-->
<pattern>%d{HH:mm:ss.SSS} %-5level %logger{50} - %msg%n</pattern>
</encoder>
</appender>

<logger name="com.apache.ibatis" level="DEBUG"/>

<root level="INFO">
<appender-ref ref="ROLLING" />
<!-- 控制台 -->
<appender-ref ref="STDOUT" />
</root>
</configuration>

控制台输出信息如下:

SpringBoot mybatis 输出SQL语句到控制台_springboot

logback.properties配置如下:

file.dir=/home/tmp
file.name=commons
file.ext=log

目录结构:

SpringBoot mybatis 输出SQL语句到控制台_日志输出_02

希望对你有所帮助