修复取值问题

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/mysql/order/TradeOrderItemMapper.java

@@ -115,7 +115,15 @@ public interface TradeOrderItemMapper extends BaseMapperX<TradeOrderItemDO> {
         if (CollUtil.isEmpty(result)) {
             return 0;
         }
-        Object totalCount = result.get(0).get("total_count");
-        return totalCount != null ? ((Number) totalCount).intValue() : 0;
+        Map<String, Object> first = CollUtil.getFirst(result);
+        if (first == null) {
+            return 0;
+        }
+        // 兼容不同数据库返回列名大小写（total_count / TOTAL_COUNT）
+        Object totalCount = first.get("total_count");
+        if (totalCount == null) {
+            totalCount = first.get("TOTAL_COUNT");
+        }
+        return totalCount instanceof Number ? ((Number) totalCount).intValue() : 0;
     }
 }

yudao-server/src/main/resources/application-local.yaml

@@ -46,9 +46,9 @@ spring:
       primary: master
       datasource:
         master:
-          # url: jdbc:mysql://123.157.250.162:37897/xr?useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true&nullCatalogMeansCurrent=true&rewriteBatchedStatements=true # MySQL Connector/J 8.X 连接的示例
-          # username: xr
-          # password: zd5ecNxeXHZxkWs8
+#          url: jdbc:mysql://123.157.250.162:37897/xr_v2?useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true&nullCatalogMeansCurrent=true&rewriteBatchedStatements=true # MySQL Connector/J 8.X 连接的示例
+#          username: xr_v2
+#          password: GR6DMKkyXAxcZSe4
           url: jdbc:mysql://127.0.0.1:3306/xr_v2?useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true&nullCatalogMeansCurrent=true&rewriteBatchedStatements=true # MySQL Connector/J 8.X 连接的示例
           username: root
           password: root