优化行号

jetlinks-manager/device-manager/src/main/java/org/jetlinks/community/device/web/DeviceInstanceController.java

@@ -379,7 +379,7 @@ public class DeviceInstanceController implements
                 DeviceInstanceEntity entity = FastBeanCopier.copy(info, new DeviceInstanceEntity());
                 entity.setProductId(productId);
                 if (StringUtils.isEmpty(entity.getId())) {
-                    throw new BusinessException("第" + info.getRowNumber() + 1 + "行:设备ID不能为空");
+                    throw new BusinessException("第" + (info.getRowNumber() + 1) + "行:设备ID不能为空");
                 }
                 return Tuples.of(entity, info.getTags());
             })