From 022e81c800fb0cfc74f195a094bae1a8691ebb87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B2=E8=BE=B0=E7=94=9F=E4=BA=A7?= <jiachenlong@local>
Date: Wed, 8 Apr 2026 20:44:15 +0800
Subject: [PATCH] =?UTF-8?q?v1.2.70=20-=20=E4=BF=AE=E5=A4=8D=E7=89=88?=
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---
 backend/app/routers/collections.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/backend/app/routers/collections.py b/backend/app/routers/collections.py
index cfad289..7fbf85a 100644
--- a/backend/app/routers/collections.py
+++ b/backend/app/routers/collections.py
@@ -67,11 +67,11 @@ def generate_code(version: str, user_id: str, db: Session) -> str:
     """自动生成藏品编号 - 按用户独立编码"""
     import re
     
-    # 查询当前用户的非空编码（不与其他用户混算）
+    # 查询当前用户的非空编码（不与其他用户混算）- 使用行锁防止并发
     user_codes = db.query(Collection.f01_02_code).filter(
         Collection.f01_02_code.isnot(None),
         Collection.f99_91_user_id == user_id
-    ).all()
+    ).with_for_update().all()
     
     max_num = 0
     for (code,) in user_codes: