【缺陷修复】MALL：物流信息的缓存不生效的问题

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/admin/order/TradeOrderController.http

@@ -7,3 +7,8 @@ tenant-id: {{adminTenentId}}
 GET {{baseUrl}}/trade/order/get-detail?id=21
 Authorization: Bearer {{token}}
 tenant-id: {{adminTenentId}}
+
+### 获得交易订单的物流轨迹 => 成功
+GET {{baseUrl}}/trade/order/get-express-track-list?id=21
+Authorization: Bearer {{token}}
+tenant-id: {{adminTenentId}}

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/TradeOrderQueryServiceImpl.java

@@ -215,7 +215,7 @@ public class TradeOrderQueryServiceImpl implements TradeOrderQueryService {
      * @return 物流轨迹
      */
     @Cacheable(cacheNames = RedisKeyConstants.EXPRESS_TRACK, key = "#code + '-' + #logisticsNo + '-' + #receiverMobile",
-            condition = "#result != null")
+            condition = "#result != null && #result.length() > 0")
     public List<ExpressTrackRespDTO> getExpressTrackList(String code, String logisticsNo, String receiverMobile) {
         return expressClientFactory.getDefaultExpressClient().getExpressTrackList(
                 new ExpressTrackQueryReqDTO().setExpressCode(code).setLogisticsNo(logisticsNo)