From 544e4414faa22350a09b9928d3cbeb1cff83c5ef Mon Sep 17 00:00:00 2001
From: 86156 <823267011@qq.com>
Date: Mon, 1 Dec 2025 17:41:59 +0800
Subject: [PATCH] =?UTF-8?q?=20=E8=8E=B7=E5=8F=96=E6=9C=80=E5=A4=A7?=
 =?UTF-8?q?=E4=BB=A3=E5=8F=B7=EF=BC=88=E6=9A=82=E6=97=B6=E5=81=9C=E7=94=A8?=
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---
 .../ruoyi/oa/controller/CodeGeneratorController.java   |  6 ++++++
 .../com/ruoyi/oa/service/CodeGeneratorService.java     |  2 ++
 .../oa/service/impl/CodeGeneratorServiceImpl.java      | 10 ++++++++++
 3 files changed, 18 insertions(+)

diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/CodeGeneratorController.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/CodeGeneratorController.java
index ba30885..1b8c4b5 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/CodeGeneratorController.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/controller/CodeGeneratorController.java
@@ -19,4 +19,10 @@ public class CodeGeneratorController {
     public String genCode(@PathVariable String prefix) {
         return gen.nextCode(prefix);
     }
+
+
+   @GetMapping("/max/{prefix}")
+    public Long maxCode(@PathVariable String prefix) {
+        return gen.maxCode(prefix);
+    }
 }
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/CodeGeneratorService.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/CodeGeneratorService.java
index a652eef..f4af6d5 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/CodeGeneratorService.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/CodeGeneratorService.java
@@ -3,4 +3,6 @@ package com.ruoyi.oa.service;
 public interface CodeGeneratorService {
 
     String nextCode(String prefix) ;
+
+    Long maxCode(String prefix);
 }
diff --git a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/CodeGeneratorServiceImpl.java b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/CodeGeneratorServiceImpl.java
index 5a56e7b..369718f 100644
--- a/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/CodeGeneratorServiceImpl.java
+++ b/ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/CodeGeneratorServiceImpl.java
@@ -23,4 +23,14 @@ public class CodeGeneratorServiceImpl implements CodeGeneratorService {
         String padded = String.format("%07d", num);
         return prefix + "-" + padded;   // e.g. TH-0000001
     }
+
+
+
+    @Transactional(rollbackFor = Exception.class)
+    @Override
+    public Long maxCode(String prefix) {
+        mapper.upsertAndIncr(prefix);   // 原子插/更
+        long num = mapper.getLastSeq(); // 拿到新的序号
+        return num-1L;   //
+    }
 }