refector: 优化了do_in报错

apps/wpm/services.py

@@ -3,7 +3,7 @@ import datetime
 from django.core.cache import cache
 from django.db.models import Sum
 from django.utils.timezone import localtime
-from django.core.exceptions import ObjectDoesNotExist
+from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
 
 from rest_framework.exceptions import ParseError
 
@@ -89,7 +89,9 @@ def do_in(mio: MIO):
             wm = WMaterial.objects.get(
                 batch=item.batch, material=item.material, belong_dept=belong_dept)
         except ObjectDoesNotExist:
-            raise ParseError('车间物料不存在')
+            raise ParseError('车间物料不存在!')
+        except MultipleObjectsReturned:
+            raise ParseError('存在多行车间物料!')
         new_count = wm.count - item.count
         if new_count > 0:
             wm.count = new_count