ComFileDAO.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">

<!-- 附件目录表 -->
<mapper namespace="com.yiboshi.science.dao.ComFileDAO">
    <sql id="allColumns">
        t.id as id, t.download_id as downloadId, t.object_id as objectId, t.file_explain as fileExplain, t.created as created
    </sql>
    <select id="getListByObjectId" parameterType="java.util.Map" resultType="com.yiboshi.science.param.dto.ComFileDTO">
        SELECT
        a.*,b.download_url,b.file_name
        FROM com_file a
        left join com_download b on a.download_id=b.id
        where object_id=#{objectId} and file_type=#{fileType}
        order by a.show_index
    </select>
</mapper>