public async Task <dynamic> OnGetHomeworkFileAsync(int hwID, int fileID, string token, bool mode)
{
try
{
var t = await tokenService.GetTokenAsync(token);
if (t == null)
{
throw new Exception("请先登录");
}
if (t.Role != UserRole.Admin)
{
if (!await homeworkService.CheckInCourse(t.UserID, hwID))
{
throw new Exception("权限不足");
}
}
var fileInfo = await fileService.GetFileAsync(fileID);
new FileExtensionContentTypeProvider().TryGetContentType(fileInfo.Name, out var contentType);
if (mode)
{
var arr = Encoding.UTF8.GetBytes(fileInfo.Name);
var name = string.Empty;
foreach (var b in arr)
{
name += string.Format("%{0:X2}", b);
}
HttpContext.Response.Headers.Add("Content-Disposition", new Microsoft.Extensions.Primitives.StringValues("attachment; filename = " + name));
}
return(PhysicalFile(Path.GetFullPath(fileInfo.Path), contentType));
}
catch (Exception e)
{
return(new { Res = false, Error = e.Message });
}
}
