public async Task <dynamic> OnExportExamAsync(int examID, bool mode, string token)
{
try
{
var t = await tokenService.GetTokenAsync(token);
if (t == null)
{
throw new Exception("请先登录");
}
var role = t.Role;
if (role != UserRole.Admin)
{
role = await examService.GetExamRoleAsync(examID, t.UserID);
}
if (role == UserRole.Student)
{
throw new Exception("权限不足");
}
var examInfo = await examService.GetExamAsync(examID);
if (examInfo.Status != ExamStatus.Finished)
{
throw new Exception("无效操作");
}
var tempFile = Path.GetTempFileName();
using (var sw = new StreamWriter(new FileStream(tempFile, FileMode.OpenOrCreate), Encoding.GetEncoding("gbk")))
{
await examService.WriteExamInfoAsync(sw, examInfo);
}
var fileName = examInfo.Title + " 测试成绩.csv";
new FileExtensionContentTypeProvider().TryGetContentType(fileName, out var contentType);
if (mode)
{
var arr = Encoding.UTF8.GetBytes(fileName);
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(tempFile), contentType, fileName));
}
catch (Exception e)
{
return(new { Res = false, Error = e.Message });
}
}
