条件和分页查询

    <select id="queryBlackByMac" resultMap="BlackByMac">
        SELECT
        packet_black_mac_id, mac, creator, create_time
        FROM
        flnet_system_ota.packet_black_mac
        <where>
            <if test=" mac!=null and mac!=‘‘  ">
                mac LIKE ‘%${mac}%‘ AND
            </if>
            state = 0
        </where>
        ORDER BY create_time DESC, packet_black_mac_id DESC
        LIMIT #{offset}, #{limit}
    </select>

    List<BlackMac> queryBlackByMac(@Param(value = "mac") String mac,
                                   @Param(value = "offset") int offset,
                                   @Param(value = "limit") int limit);

List<BlackMac> blackMacList = blackMacDao.queryBlackByMac(mac,
                (pagination.getPage() - 1) * pagination.getPageNum(), pagination.getPageNum());