ssm项目中mybatis打印sql日志

<?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>

    <!-- 将下划线分割的列名转化为pojo对象的驼峰式命名的属性名 -->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!--打印日志可以看执行的sql语句-->
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>


</configuration>