bugfix: 文件上传时，folder不传会产生null路径

OpenAuth.WebApi/Controllers/ServiceControllers/ManageController.cs

@@ -1,4 +1,5 @@
 using System.Text;
+using Castle.Core.Internal;
 using Infrastructure;
 using Infrastructure.CloudSdk.wayline;
 using Microsoft.AspNetCore.Authorization;
@@ -262,6 +263,7 @@ namespace OpenAuth.WebApi.Controllers.ServiceControllers
         {
             return await _app.GetTaskPicList(flightId, timestamp);
         }
+
         #endregion
 
         #region 航线管理
@@ -356,6 +358,7 @@ namespace OpenAuth.WebApi.Controllers.ServiceControllers
         {
             return await _app.DeleteAirLine(id);
         }
+
         /// <summary>
         /// 上传航线文件
         /// </summary>
@@ -368,6 +371,11 @@ namespace OpenAuth.WebApi.Controllers.ServiceControllers
         {
             if (xmlFile == null || xmlFile.Length == 0)
                 return BadRequest("文件为空");
+            if (string.IsNullOrEmpty(folder))
+            {
+                folder = "";
+            }
+
             var path = await _app.UploadFile(xmlFile, folder);
             return Ok(new { message = "上传成功", path });
         }