<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
 <settings>
     <!--打印SQL语句-->
     <setting name="logImpl" value="STDOUT_LOGGING"/>
 </settings>
</configuration>