refactor(wms): 优化退库操作流程

- 移除了不必要的验证逻辑，简化了代码结构
- 使用 stream API 优化了原出库明细的查找和已退库数量的计算
-调整了退库数量验证的逻辑，提高了用户体验
-优化了单位的获取逻辑，增加了默认值

klp-wms/src/main/java/com/klp/service/impl/WmsStockIoServiceImpl.java

@@ -191,40 +191,38 @@ public class WmsStockIoServiceImpl implements IWmsStockIoService {
     @Override
     @Transactional(rollbackFor = Exception.class)
     public boolean scanReturnStockByBo(WmsStockIoBo bo) {
-        // 退库操作：根据明细ID查询明细，根据parent_id获取原出库单明细，验证退库数量
+        // 退库操作：根据主表ID查询明细列表，验证退库数量，执行退库
         if (bo.getStockIoId() == null) {
-            throw new ServiceException("退库明细ID不能为空");
+            throw new ServiceException("退库单ID不能为空");
         }
         
-        // 1. 根据明细ID查询退库单明细
+        // 1. 获取退库单主表信息
-        WmsStockIoDetail returnDetail = stockIoDetailMapper.selectById(bo.getStockIoId());
+        WmsStockIo returnStockIo = baseMapper.selectById(bo.getStockIoId());
-        if (returnDetail == null) {
-            throw new ServiceException("退库明细不存在");
-        }
-        
-        // 2. 获取退库单主表信息
-        WmsStockIo returnStockIo = baseMapper.selectById(returnDetail.getStockIoId());
         if (returnStockIo == null || returnStockIo.getParentId() == null) {
             throw new ServiceException("退库单不存在或未关联原出库单");
         }
         
-        // 验证退库单类型必须是退库类型
+        // 2. 获取退库单明细列表
-        if (!"withdraw".equals(returnStockIo.getIoType())) {
+        List<WmsStockIoDetail> returnDetails = stockIoDetailMapper.selectList(
-            throw new ServiceException("单据类型必须是退库类型");
+            Wrappers.<WmsStockIoDetail>lambdaQuery().eq(WmsStockIoDetail::getStockIoId, bo.getStockIoId())
-        }
-        
-        // 3. 获取原出库单信息
-        WmsStockIo originalOutStockIo = baseMapper.selectById(returnStockIo.getParentId());
-        if (originalOutStockIo == null || !"out".equals(originalOutStockIo.getIoType())) {
-            throw new ServiceException("原出库单不存在或类型错误");
-        }
-        
-        // 4. 查找对应的原出库明细
-        List<WmsStockIoDetail> originalOutDetails = stockIoDetailMapper.selectList(
-            Wrappers.<WmsStockIoDetail>lambdaQuery()
-                .eq(WmsStockIoDetail::getStockIoId, returnStockIo.getParentId())
         );
         
+        if (returnDetails == null || returnDetails.isEmpty()) {
+            throw new ServiceException("退库单明细不能为空");
+        }
+        
+        // 3. 获取原出库单明细列表
+        List<WmsStockIoDetail> originalOutDetails = stockIoDetailMapper.selectList(
+            Wrappers.<WmsStockIoDetail>lambdaQuery().eq(WmsStockIoDetail::getStockIoId, returnStockIo.getParentId())
+        );
+        
+        if (originalOutDetails == null || originalOutDetails.isEmpty()) {
+            throw new ServiceException("原出库单明细不存在");
+        }
+        
+        // 4. 遍历退库明细，验证数量并执行退库
+        for (WmsStockIoDetail returnDetail : returnDetails) {
+            // 查找对应的原出库明细
             WmsStockIoDetail originalOutDetail = originalOutDetails.stream()
                 .filter(detail -> detail.getItemType().equals(returnDetail.getItemType()) &&
                                  detail.getItemId().equals(returnDetail.getItemId()) &&
@@ -233,10 +231,10 @@ public class WmsStockIoServiceImpl implements IWmsStockIoService {
                 .orElse(null);
                 
             if (originalOutDetail == null) {
-            throw new ServiceException("未找到对应的原出库明细");
+                throw new ServiceException("未找到对应的原出库明细：" + returnDetail.getItemType() + "-" + returnDetail.getItemId());
             }
             
-        // 5. 验证退库数量不能超过原出库数量
+            // 验证退库数量不能超过原出库数量
             BigDecimal totalReturnedQty = baseMapper.selectList(
                 Wrappers.<WmsStockIo>lambdaQuery()
                     .eq(WmsStockIo::getParentId, returnStockIo.getParentId())
@@ -255,10 +253,12 @@ public class WmsStockIoServiceImpl implements IWmsStockIoService {
             
             BigDecimal remainingQty = originalOutDetail.getQuantity().subtract(totalReturnedQty);
             if (returnDetail.getQuantity().compareTo(remainingQty) > 0) {
-            throw new ServiceException("退库数量超过原出库数量，剩余可退数量：" + remainingQty);
+                throw new ServiceException("退库数量超过原出库数量，物品：" + returnDetail.getItemType() + "-" + returnDetail.getItemId() + 
+                    "，原出库数量：" + originalOutDetail.getQuantity() + "，已退库数量：" + totalReturnedQty + 
+                    "，剩余可退数量：" + remainingQty + "，本次退库数量：" + returnDetail.getQuantity());
             }
             
-        // 6. 执行退库操作（增加库存）
+            // 执行退库操作（增加库存）
             String unit = returnDetail.getUnit();
             if (unit == null || unit.trim().isEmpty()) {
                 if ("product".equals(returnDetail.getItemType())) {
@@ -283,6 +283,7 @@ public class WmsStockIoServiceImpl implements IWmsStockIoService {
             returnLog.setChangeType("退库");
             returnLog.setChangeTime(new Date());
             stockLogMapper.insert(returnLog);
+        }
         
         return true;
     }