文件下载名称调优

src/Jiaowu.Api/Controllers/CoursesExcelController.cs

@@ -4,6 +4,7 @@ using Jiaowu.Api.Domain.Identity;
 using Jiaowu.Api.Infrastructure.Auth;
 using Jiaowu.Api.Infrastructure.Caching;
 using Jiaowu.Api.Infrastructure.Excel;
+using Jiaowu.Api.Infrastructure.Files;
 using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
@@ -51,7 +52,7 @@ public sealed class CoursesExcelController(
         return File(
             bytes,
             ExcelWorkbookHelper.ContentType,
-            "课程库导入模板.xlsx");
+            DownloadFileName.Template("课程库", ".xlsx"));
     }
 
     [HttpGet("export")]
@@ -98,7 +99,7 @@ public sealed class CoursesExcelController(
         return File(
             bytes,
             ExcelWorkbookHelper.ContentType,
-            $"课程库-{DateTime.Now:yyyyMMdd-HHmm}.xlsx");
+            DownloadFileName.Export("课程库", ".xlsx"));
     }
 
     [HttpPost("import")]