refactor(shop-goods): 优化商品统计逻辑并新增已售罄商品定时下架任务

- 将商品数量统计由多次 count 查询改为单条 SQL 聚合查询
- 在 Service 层新增 getCountSummary 方法封装统计逻辑
- 从统计接口剥离写操作，新增定时任务 GoodsSoldOutTask 定期下架库存为0的商品
- 添加 Mapper 中对应的 selectCountSummary 和 downSoldOutGoods 方法及 SQL
- 避免查询接口中进行写库操作，提升性能与读写分离
- 优化 CmsWebsiteSetting 查询接口，添加对逻辑删除孤儿记录的自愈机制
- 新增 Mapper 方法 selectByWebsiteIdIgnoreLogic 和 reviveById 用于记录复活

src/main/java/com/gxwebsoft/shop/controller/ShopGoodsController.java

@@ -129,35 +129,7 @@ public class ShopGoodsController extends BaseController {
   @Operation(summary = "统计信息")
   @GetMapping("/data")
   public ApiResult<Map<String, Integer>> data(ShopGoodsParam param) {
-    Map<String, Integer> data = new HashMap<>();
-    final LambdaQueryWrapper<ShopGoods> wrapper = new LambdaQueryWrapper<>();
-
-    if (param.getMerchantId() != null) {
-      wrapper.eq(ShopGoods::getMerchantId,param.getMerchantId());
-    }
-
-    long totalNum = shopGoodsService.count(
-      wrapper.eq(ShopGoods::getStatus,0).gt(ShopGoods::getStock,0)
-    );
-    data.put("totalNum", Math.toIntExact(totalNum));
-    wrapper.clear();
-
-    long totalNum2 = shopGoodsService.count(
-      wrapper.gt(ShopGoods::getStatus,0)
-    );
-    data.put("totalNum2", Math.toIntExact(totalNum2));
-    wrapper.clear();
-
-    long totalNum3 = shopGoodsService.count(
-      wrapper.eq(ShopGoods::getStock,0)
-    );
-    data.put("totalNum3", Math.toIntExact(totalNum3));
-    wrapper.clear();
-
-    // 下架已售罄的商品
-    shopGoodsService.update(new LambdaUpdateWrapper<ShopGoods>().eq(ShopGoods::getStock,0).set(ShopGoods::getStatus,1));
-
-    return success(data);
+    return success(shopGoodsService.getCountSummary(param));
   }
 
 }

src/main/java/com/gxwebsoft/shop/mapper/ShopGoodsMapper.java

@@ -9,6 +9,7 @@ import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Update;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * 商品Mapper
@@ -48,4 +49,23 @@ public interface ShopGoodsMapper extends BaseMapper<ShopGoods> {
     @Update("UPDATE shop_goods SET sales = IFNULL(sales, 0) + #{saleCount} WHERE goods_id = #{goodsId}")
     int addSaleCount(@Param("goodsId") Integer goodsId, @Param("saleCount") Integer saleCount);
 
+    /**
+     * 商品数量统计（出售中=status=0且stock>0 / 待上架=status>0 / 已售罄=stock=0）
+     * 一条 SQL 聚合，替代 3 次 count 查询
+     *
+     * @param param 查询参数
+     * @return 包含 totalNum/totalNum2/totalNum3 的统计 Map
+     */
+    Map<String, Object> selectCountSummary(@Param("param") ShopGoodsParam param);
+
+    /**
+     * 下架已售罄（库存为0）的商品，忽略租户隔离（全局下架）
+     * 由定时任务调用，从统计读接口剥离出的写操作
+     *
+     * @return 影响的行数
+     */
+    @InterceptorIgnore(tenantLine = "true")
+    @Update("UPDATE shop_goods SET status = 1 WHERE stock = 0 AND status != 1")
+    int downSoldOutGoods();
+
 }

src/main/java/com/gxwebsoft/shop/mapper/xml/ShopGoodsMapper.xml

@@ -148,4 +148,18 @@
         <include refid="selectSql"></include>
     </select>
 
+    <!-- 商品数量统计：出售中/待上架/已售罄，一条 SQL 聚合替代 3 次 count -->
+    <select id="selectCountSummary" resultType="java.util.Map">
+        SELECT
+            COALESCE(SUM(CASE WHEN a.status = 0 AND a.stock &gt; 0 THEN 1 ELSE 0 END), 0) AS totalNum,
+            COALESCE(SUM(CASE WHEN a.status &gt; 0 THEN 1 ELSE 0 END), 0) AS totalNum2,
+            COALESCE(SUM(CASE WHEN a.stock = 0 THEN 1 ELSE 0 END), 0) AS totalNum3
+        FROM shop_goods a
+        <where>
+            <if test="param.merchantId != null">
+                AND a.merchant_id = #{param.merchantId}
+            </if>
+        </where>
+    </select>
+
 </mapper>

src/main/java/com/gxwebsoft/shop/service/ShopGoodsService.java

@@ -6,6 +6,7 @@ import com.gxwebsoft.shop.entity.ShopGoods;
 import com.gxwebsoft.shop.param.ShopGoodsParam;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * 商品Service
@@ -49,4 +50,19 @@ public interface ShopGoodsService extends IService<ShopGoods> {
      */
     boolean addSaleCount(Integer goodsId, Integer saleCount);
 
+    /**
+     * 商品数量统计（出售中/待上架/已售罄），一条 SQL 聚合替代 3 次 count
+     *
+     * @param param 查询参数
+     * @return 包含 totalNum/totalNum2/totalNum3 的统计 Map
+     */
+    Map<String, Integer> getCountSummary(ShopGoodsParam param);
+
+    /**
+     * 下架已售罄（库存为0）的商品，供定时任务调用
+     *
+     * @return 影响的行数
+     */
+    int downSoldOutGoods();
+
 }

src/main/java/com/gxwebsoft/shop/service/impl/ShopGoodsServiceImpl.java

@@ -12,6 +12,8 @@ import org.springframework.stereotype.Service;
 import lombok.extern.slf4j.Slf4j;
 
 import java.util.List;
+import java.util.HashMap;
+import java.util.Map;
 
 /**
  * 商品Service实现
@@ -72,4 +74,26 @@ public class ShopGoodsServiceImpl extends ServiceImpl<ShopGoodsMapper, ShopGoods
         }
     }
 
+    @Override
+    public Map<String, Integer> getCountSummary(ShopGoodsParam param) {
+        Map<String, Object> summary = baseMapper.selectCountSummary(param);
+        Map<String, Integer> data = new HashMap<>(3);
+        data.put("totalNum", toInt(summary.get("totalNum")));
+        data.put("totalNum2", toInt(summary.get("totalNum2")));
+        data.put("totalNum3", toInt(summary.get("totalNum3")));
+        return data;
+    }
+
+    @Override
+    public int downSoldOutGoods() {
+        return baseMapper.downSoldOutGoods();
+    }
+
+    /**
+     * 将聚合统计结果安全转为 int（数据库 NULL 或缺失视为 0）
+     */
+    private int toInt(Object value) {
+        return value == null ? 0 : ((Number) value).intValue();
+    }
+
 }

src/main/java/com/gxwebsoft/shop/task/GoodsSoldOutTask.java

@@ -0,0 +1,43 @@
+package com.gxwebsoft.shop.task;
+
+import com.gxwebsoft.shop.service.ShopGoodsService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+/**
+ * 已售罄商品自动下架定时任务
+ *
+ * <p>从 {@code ShopGoodsController.data()} 统计读接口中剥离出的写操作：
+ * 原实现每次打开商品列表都会执行 {@code UPDATE ... SET status=1 WHERE stock=0}，
+ * 属于在查询接口里写库的反模式，且翻页/排序若合并进 page 会产生高频写。
+ * 此处改为独立定时任务，避免读链路与写操作耦合。</p>
+ *
+ * <p>默认每 5 分钟执行一次，可通过配置 {@code shop.goods.sold-out.cron} 调整。</p>
+ *
+ * @author WebSoft
+ * @since 2026-08-05
+ */
+@Slf4j
+@Component
+public class GoodsSoldOutTask {
+
+    @Autowired
+    private ShopGoodsService shopGoodsService;
+
+    /**
+     * 定时下架已售罄（库存为 0）的商品，忽略租户隔离（全局下架所有商户）
+     */
+    @Scheduled(cron = "${shop.goods.sold-out.cron:0 */5 * * * ?}")
+    public void downSoldOutGoods() {
+        try {
+            int count = shopGoodsService.downSoldOutGoods();
+            if (count > 0) {
+                log.info("定时下架已售罄商品完成，下架数量: {}", count);
+            }
+        } catch (Exception e) {
+            log.error("定时下架已售罄商品任务执行失败", e);
+        }
+    }
+}