fix(shop): 修复商城信息缓存解析逻辑

- 优化缓存数据解析流程，添加空值检查
- 当缓存解析失败时清理无效缓存键
- 改进异常处理机制，避免返回空数据
- 移除调试代码并完善日志记录

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

@@ -45,12 +45,16 @@ public class ShopWebsiteServiceImpl implements ShopWebsiteService {
         String cacheKey = SHOP_INFO_KEY_PREFIX + tenantId;
         String shopInfo = redisUtil.get(cacheKey);
         if (StrUtil.isNotBlank(shopInfo)) {
-            log.info("从缓存获取商城信息，租户ID: {}", tenantId);
-//            try {
-//                return JSONUtil.parseObject(shopInfo, ShopVo.class);
-//            } catch (Exception e) {
-//                log.warn("商城缓存解析失败，从数据库重新获取: {}", e.getMessage());
-//            }
+            try {
+                ShopVo cacheVo = JSONUtil.parseObject(shopInfo, ShopVo.class);
+                if (cacheVo != null) {
+                    log.info("从缓存获取商城信息，租户ID: {}", tenantId);
+                    return cacheVo;
+                }
+            } catch (Exception e) {
+                log.warn("商城缓存解析失败，清理缓存后重新获取: {}", e.getMessage());
+                redisUtil.delete(cacheKey);
+            }
         }
 
         // 直接调用 CMS 服务获取站点信息，然后使用商城专用缓存