Update product_query.md

@@ -129,4 +129,28 @@ code为200即为成功，否则是失败。 响应JSON格式如下所示:
   ],
   "message": "操作成功"
 }
-```
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+```
+# 3.根据仓库ID和productSkn批量查询门店库存和总仓库存 #
+
+接口名：/PurchaseAllocationController/selectByProductSkus
+
+# 请求参数 #
+```json
+[{
+    "productSkn": 51070999,
+    "storehouseId":12
+}]
+```
+
+**返回参数**
+
+code为200即为成功，否则是失败。 响应JSON格式如下所示:
+```json
+{
+  "code": 200,
+  "data": [{"localRemnantNum":5,"productSkn":164164,"storehouseId":12,"totalRemnantNum":10},{"localRemnantNum":5,"productSku":166920,"storehouseId":12,"totalRemnantNum":10}],"md5":"65d4126dc9958d82b61054549cc60b04","message":"SUCCESS"},
+  "message": "操作成功"
+}
+```
+# localRemnantNum：门店库存
+# totalRemnantNum：总仓库存
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