生成解析号码方法优化

src/Modules/新版JIT或JIS系统服务端/src/WY.NewJit.Domain/MsgCheck/Services/BillNumberRecordDomainService.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Volo.Abp;
 using Volo.Abp.Domain.Repositories;
 using Volo.Abp.Domain.Services;
 using WY.NewJit.MsgBaseData;
@@ -75,6 +76,11 @@ namespace WY.NewJit.MsgCheck
         {
             List<PrintData> datas = new List<PrintData>();
             var recordcache= _billNumberRecordCaches.FirstOrDefault(r=>r.ProductLine==productLine);
+            if (recordcache == null)
+            {
+                _logger.LogDebug("缓存记录为空无法解析！");
+                throw new BusinessException("1001", "缓存记录为空无法解析！");
+            }
             int recordNumber = recordcache.RecordNumber;//记录号
             int roundNumber = recordcache.RoundNumber;  //记录轮数
             int x = number - recordNumber;