echepei-base/fleet-sys-provider/fleet-sys-service/target/classes/mybatis/sys/SysConfigMapper.xml

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

<mapper namespace="io.platform.sys.biz.mapper.SysConfigMapper">
    <!-- 根据key，更新value -->
    <update id="updateValueByKey" parameterType="map">
		update sys_config set param_value = #{paramValue} where param_key = #{paramKey}
	</update>

    <!-- 根据key，查询value -->
    <select id="queryByKey" parameterType="string" resultType="io.platform.sys.biz.entity.SysConfig">
		select * from sys_config where param_key = #{paramKey}
	</select>


</mapper>