firstleg/src/main/java/com/baiyue/firstleg/service/ContainerService.java

@@ -192,7 +192,14 @@ public class ContainerService {
         if (repository.containerNoExists(containerNo, id)) throw conflict("集装箱号已存在");
         try {
             if (repository.updateTransport(id, containerNo, voyageNo, request.version(),
-                operatorId, operatorName) != 1) throw conflict("货柜状态或版本已变化，请刷新后重试");
+                operatorId, operatorName) != 1) {
+                ContainerTransportHistoryEntity concurrent = transportHistories == null ? null
+                    : transportHistories.selectOperation(id, operatorId, operationId);
+                if (concurrent != null && requestHash.equals(concurrent.getRequestHash())) {
+                    return required(id);
+                }
+                throw conflict("货柜状态或版本已变化，请刷新后重试");
+            }
         } catch (DuplicateKeyException ex) { throw conflict("集装箱号已存在"); }
         ContainerTransportHistoryEntity history = new ContainerTransportHistoryEntity();
         history.setContainerBookingId(id); history.setBeforeContainerNo(current.getContainerNo());

firstleg/src/test/java/com/baiyue/firstleg/service/ContainerServiceTest.java

@@ -11,6 +11,7 @@ import com.baiyue.firstleg.dto.ContainerDtos.OceanBookingLinkRequest;
 import com.baiyue.firstleg.dto.ContainerDtos.OceanBookingUnlinkRequest;
 import com.baiyue.firstleg.dto.ContainerDtos.TransportUpdateRequest;
 import com.baiyue.firstleg.entity.ContainerBookingEntity;
+import com.baiyue.firstleg.entity.ContainerTransportHistoryEntity;
 import com.baiyue.firstleg.entity.LoadingPlanEntity;
 import com.baiyue.firstleg.entity.LoadingPickTaskEntity;
 import com.baiyue.firstleg.mapper.ContainerTransportHistoryMapper;

firstleg/src/test/java/com/baiyue/firstleg/service/SmartLoadingServiceTest.java

@@ -625,6 +625,30 @@ class SmartLoadingServiceTest {
         assertThat(updated.getValue().getWarehouseRemark()).isEqualTo("装柜时注意外箱");
     }
 
+    @Test
+    void unchangedQuantityAndCargoSnapshotDoNotWriteAdjustmentHistory() {
+        LoadingPlanEntity plan = plan("LOADING", 2);
+        LoadingPlanItemEntity line = item(8, 9, 20, 2);
+        line.setGrossWeightKg(new BigDecimal("4.00"));
+        line.setNetWeightKg(new BigDecimal("3.0"));
+        line.setVolumeCbm(new BigDecimal("1.000"));
+        line.setPalletCount(0);
+        when(repository.plan(1L)).thenReturn(plan);
+        when(repository.item(1L, 8L)).thenReturn(line);
+        when(repository.booking(99L)).thenReturn(booking());
+        when(repository.candidate(1L, 100L, 10L, 20L)).thenReturn(candidate(10));
+        when(repository.items(1L)).thenReturn(List.of(line));
+
+        Plan result = service.adjust(1L, 8L,
+            new AdjustRequest(2, 2, 0, "adjust-noop"), 7L, "u");
+
+        assertThat(result.version()).isEqualTo(2);
+        verify(repository, never()).touch(anyLong(), anyInt(), anyLong(), anyString());
+        verify(repository, never()).update(any(LoadingPlanItemEntity.class));
+        verify(repository, never()).insert(any(LoadingPlanHistoryEntity.class));
+        verify(loadingPickService, never()).sync(anyLong(), any(LoadingPlanItemEntity.class));
+    }
+
     @Test
     void pickedQuantityConflictPrecedesCandidateAvailabilityValidation() {
         LoadingPlanEntity plan = plan("LOADING", 2);