From a9e958ce3675c4950ceddd3fd6f939cdf0d2bc5a Mon Sep 17 00:00:00 2001
From: guyue <1721849008@qq.com>
Date: 星期五, 25 七月 2025 19:00:20 +0800
Subject: [PATCH] 任务不存在时,更新关键词状态,更新创建订单id逻辑

---
 src/main/java/com/linghu/controller/OrderController.java |   26 ++++++++++++++++++++------
 1 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/main/java/com/linghu/controller/OrderController.java b/src/main/java/com/linghu/controller/OrderController.java
index 377bbc1..ef26edd 100644
--- a/src/main/java/com/linghu/controller/OrderController.java
+++ b/src/main/java/com/linghu/controller/OrderController.java
@@ -16,6 +16,7 @@
 import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.*;
 
 import javax.servlet.http.HttpServletRequest;
@@ -42,6 +43,7 @@
      * 新增订单
      */
     @PostMapping
+    @Transactional // 开启事务
     @ApiOperation(value = "新增订单")
     public ResponseResult<Orders> add(@RequestBody OrderDto orderDto) {
         // 将dto转entity
@@ -55,14 +57,26 @@
         // 生成订单ID:日期+当天的订单数量(如:202507060001)
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
         String dateStr = dateFormat.format(new Date());
-
-        // 查询当天订单数量
+        // 1. 查询当天最大的订单号(包含已删除的,适应硬删除场景)
         LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.likeRight(Orders::getOrder_id, dateStr);
-        long count = orderService.count(queryWrapper);
+        queryWrapper.likeRight(Orders::getOrder_id, dateStr)
+                .select(Orders::getOrder_id)
+                .orderByDesc(Orders::getOrder_id)
+                .last("LIMIT 1"); // 只取最大的一条
+        Orders maxOrder = orderService.getOne(queryWrapper);
+        int sequence = 1; // 默认序号
 
-        // 生成订单ID
-        String orderId = String.format("%s%04d", dateStr, count + 1);
+        if (maxOrder != null && maxOrder.getOrder_id() != null) {
+            // 2. 从最大订单号中提取序号(如"202507250005"提取"0005")
+            String maxId = maxOrder.getOrder_id();
+            if (maxId.length() == dateStr.length() + 4) { // 校验格式
+                String seqStr = maxId.substring(dateStr.length());
+                sequence = Integer.parseInt(seqStr) + 1; // 序号+1
+            }
+        }
+
+        // 3. 生成新订单号(补全4位,如1→0001)
+        String  orderId = String.format("%s%04d", dateStr, sequence);
         order.setOrder_id(orderId);
 
         // 设置初始状态

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