方法一， 添加 druid jar

 <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.29</version>
        </dependency>

在yml添加配置

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
 driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true&useSSL=false
    username: root
    password: root

方法二
在 yml里配置：

logging:
    level:
      com:
        yuqiyu:
             jpf:
               mapper: debug

注意： logging要頂格寫

com.yuqiyu.jpf.mappe 為mpper的包

或者在 application.properties 里配置

logging.level.com.yuqiyu.jpf.mapper=debug