From 612f24d5f12a9afbe8adc9ff882daaf6ef85d84a Mon Sep 17 00:00:00 2001
From: wangzhibiao <wangzhibiao@gitlab.com>
Date: Mon, 21 Sep 2026 21:21:37 +0800
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---
 .../train/service/impl/EnrollmentPlanCompletionAdapter.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
index 7ffbf910e..62c3fda4a 100644
--- a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
+++ b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
@@ -41,6 +41,10 @@ public class EnrollmentPlanCompletionAdapter implements PlanEnrollmentCompletion
     @Override
     public void precheckCompletion(String planId)
     {
+        // 按 enrollment_id 稳定升序锁定该计划下全部学员记录 (SELECT ... ORDER BY enrollment_id FOR UPDATE)，
+        // 阻止结训与学员报到/状态修改之间的并发竞态与 TOCTOU 窗口
+        trainEnrollmentService.selectEnrollmentsForUpdateByPlanId(planId);
+
         List<java.util.Map<String, Object>> stats = trainEnrollmentService.selectEnrollmentCompletionStatsByPlanId(planId);
         int status0Waiting = 0;
         int status1Reported = 0;