From 5750adeb03e87ed2984dc33bf83de904c9032bbb Mon Sep 17 00:00:00 2001
From: Agent <agent@openclaw.ai>
Date: Tue, 31 Mar 2026 16:03:36 +0000
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=88=A0=E9=99=A4=E5=88=86=E7=B1=BB?=
 =?UTF-8?q?=E6=A3=80=E6=9F=A5=E6=98=AF=E5=90=A6=E6=9C=89=E5=95=86=E5=93=81?=
 =?UTF-8?q?=E4=BD=BF=E7=94=A8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../example/building/service/impl/ProductServiceImpl.java  | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/com/example/building/service/impl/ProductServiceImpl.java b/src/main/java/com/example/building/service/impl/ProductServiceImpl.java
index 8f1e998..7695616 100644
--- a/src/main/java/com/example/building/service/impl/ProductServiceImpl.java
+++ b/src/main/java/com/example/building/service/impl/ProductServiceImpl.java
@@ -68,9 +68,16 @@ public class ProductServiceImpl implements ProductService {
 
     /**
      * 删除分类
+     * 检查是否有商品使用该分类，存在则不允许删除
      */
     @Override
     public void deleteCategory(String id) {
+        // 检查是否有商品使用该分类
+        Long count = productMapper.selectCount(new LambdaQueryWrapper<Product>()
+                .eq(Product::getCategoryId, id));
+        if (count > 0) {
+            throw new RuntimeException("该分类下有商品，无法删除");
+        }
         categoryMapper.deleteById(id);
     }