ASP.NET Core 接口返回文件类型文件名中文乱码

  /// <summary>
  /// 下载报表模板
  /// </summary>
  /// <returns></returns>
  [HttpGet]
  public IActionResult Down(string id)
  {
      var (fileBytes, fileName) = _business.Down(id);
      if (fileBytes == null || fileBytes.Length == 0)
      {
          return NotFound("文件不存在");
      }

      // 添加命名空间：Microsoft.AspNetCore.Http
      Response.Headers.Append("Access-Control-Expose-Headers", "Content-Disposition");

      return File(fileBytes, "application/octet-stream", Uri.EscapeDataString(fileName));
  }