1
我正在使用Microsoft MVC我写了一个将文件上传到Amazon S3 API的视图。 我想在我的视图中显示进度条，以显示在我的控制器中处理该操作的进度，而不是特别上传文件。使用http Post的MVC Progress Bar
我已经尝试了几个JQUERY/AJAX上传器，但每次我都放弃了HttpPostedFileBase的值并且该文件的值为空。
我基本上需要找到一个支持Post和multipart/form-data的进度条功能。
代码如下
ASPX
<%using (Html.BeginForm("Upload", "Tracks", FormMethod.Post, new { enctype = "multipart/form-data" }))
{%>
<label for="BandName">Artist</label>
<%=Html.TextBox("Artists") %><%:Html.ValidationMessage("Artist","*")%>
<div class="clearfix">
</div>
<label for="SongName">Song Title
</label>
<%=Html.TextBox("SongName") %><%:Html.ValidationMessage("SongName","*")%>
<div class="clearfix">
</div>
<label for="SongName">Genre(s)
</label>
<%=Html.TextBox("Genres") %><%:Html.ValidationMessage("Genres","*")%>
<div class="clearfix">
</div>
<label for="SongName">Mood(s)
</label>
<%=Html.TextBox("Moods") %><%:Html.ValidationMessage("Moods","*")%>
<div class="clearfix">
</div>
<%:Html.Label("Country") %><%=Html.DropDownListFor(x => x.OrigCountryOptions,Model.OrigCountryOptions)%> <br /><br />
<div class="clearfix">
</div>
<label for="FileName">File
</label>
<input type="file" name="SongFile" id="SongFile"/>
<div class="clearfix">
</div>
<input type="submit" value="Submit" />
<%
}
%>
控制器动作
[Authorize]
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Upload(Track track, Guid origcountryoptions, HttpPostedFileBase SongFile)
{
DateTime timestamp = DateTime.Now;
EncryptManager _encryptManager = new EncryptManager();
EmailService _emailService ;
string strMySignature = _encryptManager.GetSignature(
cAWSSecretKey,
"PutObjectInline",
timestamp);
AmazonS3 amazonS3 = new AmazonS3();
string filename = SongFile.FileName;
int FileLen = SongFile.ContentLength;
byte[] buf = new byte[SongFile.ContentLength];
int data = SongFile.InputStream.Read(buf, 0, FileLen);
if (FileLen > 100000000)
ModelState.AddModelError("LargeFile", "File Size is limited to 10mb");
if (filename.Substring(filename.Length - 3, 3).ToUpper() != "MP3")
ModelState.AddModelError("FileFormat", "Upload is limited to MP3's");
if (String.IsNullOrEmpty(track.Artists))
ModelState.AddModelError("Artist", "Please enter the artist name.");
if (String.IsNullOrEmpty(track.Genres))
ModelState.AddModelError("Genres", "Please enter the Genre(s).");
if (String.IsNullOrEmpty(track.Moods))
ModelState.AddModelError("Moods", "Please enter the Moods(s).");
if (String.IsNullOrEmpty(track.Songname))
ModelState.AddModelError("SongName", "Please enter the Song Name.");
MetadataEntry[] metadata = new MetadataEntry[2];
metadata[0] = new MetadataEntry();
metadata[0].Name = "Content-Type";
metadata[0].Value = SongFile.ContentType;
metadata[1] = new MetadataEntry();
metadata[1].Name = "filename";
metadata[1].Value = filename;
PutObjectResult result = amazonS3.PutObjectInline("PayForPlay.Tracks",
cAWSSecretKey, metadata, buf,
SongFile.ContentLength, null, StorageClass.STANDARD,
true, cAWSAccessKeyId, timestamp,
true, strMySignature, null);
if (ModelState.IsValid)
{
using (var scopaddTrack = new UnitOfWorkScope())
{
var person = _personService.GetPerson(SessionWrapper.PersonId);
Country origCountry = _lookupService.GetCountry(origcountryoptions);
var newtrack = _trackService.CreateTrack(person, origCountry, track.Artists,
track.Moods, track.Genres, track.Songname);
scopaddTrack.Commit();
try
{
var defaultClient = new DefaultEmailClient(ConfigurationManager.AppSettings["SMTPServer"],
ConfigurationManager.AppSettings["SMTPUsername"],
ConfigurationManager.AppSettings["SMTPPassword"]);
var service = new EmailService(defaultClient);
var email = new Email
{
ToAddress = ConfigurationManager.AppSettings["ToAddress"],
ToName = ConfigurationManager.AppSettings["ToAddress"],
FromAddress = ConfigurationManager.AppSettings["FromAddrress"],
FromName = ConfigurationManager.AppSettings["FromAddrress"],
Subject = "New Track Added",
Body = "<html><body><h1>Wesbank Email Service Working</h1></body></html>",
IsHtml = true
};
service.SendEmail(email);
email.Subject = "Wesbank Email Service - Async Sorted";
service.SendAsycnEmail(email);
}
catch (Exception exception)
{
}
}
return RedirectToAction("List");
}
else
{
var countryoptions = _lookupService.GetAllCountries();
var tracklist = _trackService.GetAllTracksByPerson(SessionWrapper.PersonId);
var viewmodel = new TracksViewModel(tracklist, countryoptions);
return View("Add", viewmodel);
}
}