iot-gateway/src/main/resources/mappers/noticeMappers/BulletinMapper.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="com.zsc.edu.gateway.modules.notice.repo.BulletinRepository">
    <resultMap id="BulletinMap" type="com.zsc.edu.gateway.modules.notice.vo.BulletinVo">
        <id column="id" jdbcType="BIGINT" property="id"/>
        <result column="title" jdbcType="VARCHAR" property="title"/>
        <result column="state" jdbcType="INTEGER" property="state"/>
        <result column="top" jdbcType="BOOLEAN" property="top"/>
        <result column="edit_time" jdbcType="TIMESTAMP" property="editTime"/>
        <result column="publish_time" jdbcType="TIMESTAMP" property="publishTime"/>
        <result column="close_time" jdbcType="TIMESTAMP" property="closeTime"/>
        <result column="content" jdbcType="VARCHAR" property="content"/>
        <result column="edit_user_id" jdbcType="BIGINT" property="editUserId"/>
        <result column="publish_user_id" jdbcType="BIGINT" property="publishUserId"/>
        <result column="close_user_id" jdbcType="BIGINT" property="closeUserId"/>
        <result column="edit_user_name" jdbcType="VARCHAR" property="editUsername"/>
        <result column="publish_user_name" jdbcType="VARCHAR" property="publishUsername"/>
        <result column="close_user_name" jdbcType="VARCHAR" property="closeUsername"/>
        <result column="create_by" jdbcType="VARCHAR" property="createBy"/>
        <result column="update_by" jdbcType="VARCHAR" property="updateBy"/>
        <result column="create_time" jdbcType="DATE" property="createTime"/>
        <result column="update_time" jdbcType="DATE" property="updateTime"/>
        <result column="remark" jdbcType="VARCHAR" property="remark"/>
        <collection property="attachmentVos" ofType="com.zsc.edu.gateway.modules.attachment.vo.AttachmentVo"
                    autoMapping="true" columnPrefix="attachment_">
            <id column="id" jdbcType="VARCHAR" property="attachmentId"/>
            <result column="url" jdbcType="VARCHAR" property="url"/>
            <result column="file_ame" jdbcType="VARCHAR" property="fileName"/>
        </collection>
    </resultMap>
    <select id="selectByBulletinId" resultMap="BulletinMap">
        SELECT sb.*, a.id as attachment_id,a.url as attachment_url,a.file_name as attachment_file_name
        FROM
        sys_bulletin sb
        LEFT JOIN sys_bulletin_attach sba ON sb.id = sba.bulletin_id
        LEFT JOIN attachment a ON a.id = sba.attachment_id
        <where>
            <if test="bulletinId !=null">
                sb.id = #{bulletinId}
            </if>
        </where>
    </select>

    <select id="selectPageByConditions" resultMap="BulletinMap">
        SELECT sb.*, a.id as attachment_id,a.file_name as attachment_file_name,a.url as attachment_url
        FROM
        sys_bulletin sb
        LEFT JOIN sys_bulletin_attach sba ON sb.id = sba.bulletin_id
        LEFT JOIN attachment a ON a.id = sba.attachment_id
        <where>
        <if test="query.title != null and query.title != ''">
            AND sb.title LIKE CONCAT('%', #{query.title}, '%')
        </if>
        <if test="query.state != null">
            AND sb.state = #{query.state}
        </if>
        <if test="query.publishTimeBegin != null and query.publishTimeEnd != null">
            AND sb.publish_time BETWEEN #{query.publishTimeBegin} AND #{query.publishTimeEnd}
        </if>
        </where>
        order by sb.top DESC,sb.publish_time DESC,sb.create_time DESC
    </select>
</mapper>