snd-escloud/target/classes/mapper/build/ElectricReadCompanyDao.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="platform.modules.build.dao.ElectricReadCompanyDao">

    <select id="findElectricReadCompanyByElectricFeeId" resultType="platform.modules.build.entity.ElectricReadCompany">
        select *,e.is_peak as is_peak,e.ratio as is_ratio from y_electric_read_company erc
        left join y_electric e on e.id=erc.electric_id
        where erc.del_flag=0 and erc.id in 
        <foreach item="item" index="index" collection="ids"
                 open="(" separator="," close=")">
            #{item}
        </foreach>
    </select>

</mapper>