fix:完善提示

lms/nladmin-system/src/main/java/org/nl/b_lms/pdm/subpackagerelation/service/impl/PdmBiSubpackagerelationServiceImpl.java

@@ -551,6 +551,10 @@ public class PdmBiSubpackagerelationServiceImpl extends ServiceImpl<PdmBiSubpack
                 new QueryWrapper<BstIvtBoxinfo>().lambda()
                         .eq(BstIvtBoxinfo::getBox_no, boxSn)
         );
+        String box_weight = boxDao.getBox_weight();
+        if (ObjectUtils.isEmpty(box_weight)) {
+            throw new BadRequestException("木箱重量为空！");
+        }
         //木箱重量
         BigDecimal boxWeight = new BigDecimal(boxDao.getBox_weight());
         totalWeight = totalWeight.add(boxWeight);