fix(service): 修复空列表处理避免空指针异常

buhuazhen

2026-04-22 252766e40f844145579317509cf5136a8e6d2de4

 src/main/resources/mapper/production/ProductStructureMapper.xml

@@ -23,6 +23,9 @@
                left join product p on pm.product_id = p.id
                left join product_process pp on ps.process_id = pp.id
        where ps.bom_id = #{bomId}
        <if test="isParent">
            and ps.parent_id is not null
        </if>
        order by ps.id
    </select>
    <select id="listBybomAndProcess" resultType="com.ruoyi.production.dto.ProductStructureDto">