src/main/java/com/ruoyi/production/service/impl/ProductionOrderServiceImpl.java
@@ -245,6 +245,18 @@
                        .eq(TechnologyRoutingOperation::getTechnologyRoutingId, technologyRouting.getId())
                        .orderByDesc(TechnologyRoutingOperation::getDragSort)
                        .orderByDesc(TechnologyRoutingOperation::getId));
        // Build task plan quantities from order BOM snapshot demand instead of recomputing from technology BOM units.
        Long rootProductModelId = orderBom != null && orderBom.getProductModelId() != null
                ? orderBom.getProductModelId()
                : productionOrder.getProductModelId();
        List<ProductionBomStructure> orderBomStructureList = orderBom == null || orderBom.getId() == null
                ? Collections.emptyList()
                : productionBomStructureMapper.selectList(
                Wrappers.<ProductionBomStructure>lambdaQuery()
                        .eq(ProductionBomStructure::getProductionOrderBomId, orderBom.getId())
                        .orderByAsc(ProductionBomStructure::getId));
        Map<String, BigDecimal> operationDemandedQuantityMap =
                buildOperationDemandedQuantityMap(orderBomStructureList, rootProductModelId);
        Map<Long, String> operationNameMap = technologyOperationMapper.selectBatchIds(
        // 遍历处理数据并组装结果
                        routingOperations.stream()
@@ -278,7 +290,11 @@
                ProductionOperationTask task = new ProductionOperationTask();
                task.setProductionOrderRoutingOperationId(targetOperation.getId());
                task.setProductionOrderId(productionOrder.getId());
                task.setPlanQuantity(defaultDecimal(productionOrder.getQuantity()));
                task.setPlanQuantity(resolveTaskPlanQuantity(
                        sourceOperation,
                        operationDemandedQuantityMap,
                        productionOrder,
                        rootProductModelId));
                task.setCompleteQuantity(BigDecimal.ZERO);
                task.setWorkOrderNo(generateNextTaskNo());
                task.setStatus(2);
@@ -311,6 +327,85 @@
            }
        }
        return syncedParamCount;
    }
    private Map<String, BigDecimal> buildOperationDemandedQuantityMap(List<ProductionBomStructure> bomStructures,
                                                                      Long rootProductModelId) {
        if (bomStructures == null || bomStructures.isEmpty()) {
            return Collections.emptyMap();
        }
        Map<Long, ProductionBomStructure> structureById = bomStructures.stream()
                .filter(item -> item != null && item.getId() != null)
                .collect(Collectors.toMap(ProductionBomStructure::getId, item -> item, (left, right) -> left));
        Map<String, BigDecimal> demandedQuantityMap = new HashMap<>();
        Set<String> mergedOutputNodeKeySet = new HashSet<>();
        for (ProductionBomStructure bomStructure : bomStructures) {
            if (bomStructure == null || bomStructure.getTechnologyOperationId() == null) {
                continue;
            }
            // The BOM row points to the producing operation; task quantity should come from that operation's output node.
            ProductionBomStructure outputNode = resolveOperationOutputNode(bomStructure, structureById);
            Long outputProductModelId = resolveOutputProductModelId(outputNode, rootProductModelId);
            if (outputProductModelId == null) {
                continue;
            }
            String mergedOutputNodeKey = buildOperationOutputNodeKey(
                    bomStructure.getTechnologyOperationId(),
                    outputNode == null ? null : outputNode.getId(),
                    outputProductModelId);
            if (!mergedOutputNodeKeySet.add(mergedOutputNodeKey)) {
                continue;
            }
            // demandedQuantity is already the order-level required output quantity for the current output node.
            BigDecimal demandedQuantity = defaultDecimal(outputNode == null ? null : outputNode.getDemandedQuantity());
            String key = buildOperationDemandedQuantityKey(bomStructure.getTechnologyOperationId(), outputProductModelId);
            demandedQuantityMap.merge(key, demandedQuantity, BigDecimal::add);
        }
        return demandedQuantityMap;
    }
    private BigDecimal resolveTaskPlanQuantity(TechnologyRoutingOperation sourceOperation,
                                               Map<String, BigDecimal> operationDemandedQuantityMap,
                                               ProductionOrder productionOrder,
                                               Long rootProductModelId) {
        if (sourceOperation == null || operationDemandedQuantityMap == null || operationDemandedQuantityMap.isEmpty()) {
            return defaultDecimal(productionOrder == null ? null : productionOrder.getQuantity());
        }
        Long outputProductModelId = sourceOperation.getProductModelId() != null
                ? sourceOperation.getProductModelId()
                : rootProductModelId;
        String key = buildOperationDemandedQuantityKey(sourceOperation.getTechnologyOperationId(), outputProductModelId);
        BigDecimal planQuantity = operationDemandedQuantityMap.get(key);
        return planQuantity != null ? planQuantity : defaultDecimal(productionOrder == null ? null : productionOrder.getQuantity());
    }
    private String buildOperationDemandedQuantityKey(Long operationId, Long outputProductModelId) {
        return String.valueOf(operationId) + "#" + String.valueOf(outputProductModelId);
    }
    private String buildOperationOutputNodeKey(Long operationId, Long outputNodeId, Long outputProductModelId) {
        return String.valueOf(operationId) + "#" + String.valueOf(outputNodeId) + "#" + String.valueOf(outputProductModelId);
    }
    private ProductionBomStructure resolveOperationOutputNode(ProductionBomStructure bomStructure,
                                                              Map<Long, ProductionBomStructure> structureById) {
        if (bomStructure == null) {
            return null;
        }
        // The root node is the first output node; child rows use their direct parent as the current operation output.
        if (bomStructure.getParentId() == null) {
            return bomStructure;
        }
        ProductionBomStructure parent = structureById.get(bomStructure.getParentId());
        return parent != null ? parent : bomStructure;
    }
    private Long resolveOutputProductModelId(ProductionBomStructure outputNode,
                                             Long rootProductModelId) {
        if (outputNode == null) {
            return rootProductModelId;
        }
        return outputNode.getProductModelId() != null ? outputNode.getProductModelId() : rootProductModelId;
    }
    private ProductionOrderBom syncProductionOrderBomSnapshot(ProductionOrder productionOrder, TechnologyRouting technologyRouting) {
@@ -788,12 +883,10 @@
                if (reportOutput == null) {
                    continue;
                }
                Long reportMainId = reportOutput.getProductionProductMainId() != null
                        ? reportOutput.getProductionProductMainId()
                        : reportOutput.getProductMainId();
                if (reportMainId == null) {
                if (reportOutput.getProductionProductMainId() == null) {
                    continue;
                }
                Long reportMainId = reportOutput.getProductionProductMainId();
                reportOutputMap.computeIfAbsent(reportMainId, k -> new ArrayList<>()).add(reportOutput);
            }