crm-jr/crm-jr-api/src/main/resources/mapper/SysParamsDao.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.renren.dao.SysParamsDao">

    <!-- 根据参数编码，查询value -->
	<select id="getValueByCode" resultType="String">
        select param_value from sys_params where param_code = #{value}
    </select>

    <!-- 获取参数编码列表 -->
    <select id="getParamCodeList" resultType="String">
        select param_code from sys_params where id in
        <foreach item="id" collection="array" open="(" separator="," close=")">
            #{id}
        </foreach>
    </select>

    <!-- 根据参数编码，更新value -->
    <update id="updateValueByCode">
        update sys_params set param_value = #{paramValue} where param_code = #{paramCode}
    </update>
</mapper>