From 211b87f775899d965be142e3a89d70fc96a24ea4 Mon Sep 17 00:00:00 2001
From: buhuazhen <hua100783@gmail.com>
Date: 星期一, 30 三月 2026 09:50:06 +0800
Subject: [PATCH] fix(production): 修复产品结构遍历时空对象导致的异常

---
 src/main/java/com/ruoyi/device/service/impl/DeviceLedgerServiceImpl.java |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/main/java/com/ruoyi/device/service/impl/DeviceLedgerServiceImpl.java b/src/main/java/com/ruoyi/device/service/impl/DeviceLedgerServiceImpl.java
index 913156c..b614149 100644
--- a/src/main/java/com/ruoyi/device/service/impl/DeviceLedgerServiceImpl.java
+++ b/src/main/java/com/ruoyi/device/service/impl/DeviceLedgerServiceImpl.java
@@ -1,5 +1,6 @@
 package com.ruoyi.device.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
@@ -44,6 +45,11 @@
 
     @Override
     public AjaxResult saveDeviceLedger(DeviceLedger deviceLedger) {
+        LambdaQueryWrapper<DeviceLedger> deviceLedgerLambdaQueryWrapper = new LambdaQueryWrapper<>();
+        deviceLedgerLambdaQueryWrapper.eq(DeviceLedger::getDeviceName,deviceLedger.getDeviceName());
+        if (this.count(deviceLedgerLambdaQueryWrapper) > 0) {
+            return AjaxResult.error("璁惧鍚嶇О宸插瓨鍦�");
+        }
         boolean save = this.save(deviceLedger);
         if (save){
             return AjaxResult.success();

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