optimized

@@ -50,8 +50,18 @@ public abstract class AbsOrderListService implements IOrderListService{
         List<Integer> statusQuery = initOrderListRequest(request);
         TabType tabType = TabType.getTabType(request.getTabType());
         int total = getTotal(request.getUid(), statusQuery);
-
         int limit = request.getLimit();
+        int currentTotal = 0;
+        OrderListInfoRsp.OrderListInfoRspBuilder respBuilder = OrderListInfoRsp.builder()
+                .currPage(request.getPage())
+                .limit(limit)
+                .total(total)
+                .currTotal(currentTotal)
+                .pageSize((total % limit == 0) ? (total / limit) : (total / limit + 1));
+        if (total == 0){
+            return respBuilder.build();
+        }
+
         int offset = (request.getPage() - 1) * limit;
 
         List<BuyerOrder> buyerOrderList = getOrderList(request.getUid(), statusQuery, offset, limit);
@@ -73,18 +83,10 @@ public abstract class AbsOrderListService implements IOrderListService{
         buyerOrderList.stream().forEach(buyerOrder -> {
             OrderListInfo orderListInfo = convertOrderInfo(buyerOrderGoodsMap, sellerOrderGoodsMap, buyerOrder, tabType);
             if (orderListInfo == null) return;
-
             data.add(orderListInfo);
-
         });
 
-        OrderListInfoRsp orderListInfoRsp = OrderListInfoRsp.builder()
-                .data(data)
-                .currPage(request.getPage())
-                .limit(limit)
-                .total(total)
-                .currTotal(data.size())
-                .pageSize((total % limit == 0) ? (total / limit) : (total / limit + 1)).build();
+        OrderListInfoRsp orderListInfoRsp = respBuilder.data(data).currTotal(data.size()).build();
 
         return orderListInfoRsp;