From 9aada9aba7dbbd926989fc5c50913b7fb51876d3 Mon Sep 17 00:00:00 2001
From: API Changelog Bot <changelog@hulalv.com>
Date: Fri, 3 Apr 2026 12:05:45 +0800
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+# fix: 订单重复创建——Service层增加业务级去重
+
+- **时间**: 2026-04-03 12:05
+- **PR**: #147
+- **影响服务**: hl-order-service
+
+## 变更内容
+
+### BUG修复：订单重复创建
+
+**问题**：用户在小程序提交订单后，如果获取支付参数失败，重新点击"提交订单"会创建新的重复订单。
+
+**修复**：在创建订单时增加业务级去重——同一用户+同一产品+同一出发日期如果已有待支付订单，直接返回已有订单，不再重复创建。
+
+## 前端影响
+
+**无需前端改动**。后端行为变化：
+- 之前：重复提交会创建新订单
+- 现在：重复提交会返回已有的待支付订单（接口返回格式不变）
+
+## 需要重启的服务
+
+- hl-order-service