public string Process(string body, string tenantTypeId, long associateId, long userId)
{
if (string.IsNullOrEmpty(body) || !body.Contains("[attach:"))
{
return(body);
}
List <long> attachmentIds = new List <long>();
Regex rg = new Regex(@"\[attach:(?<id>[\d]+)\]", RegexOptions.Multiline | RegexOptions.Singleline);
MatchCollection matches = rg.Matches(body);
if (matches != null)
{
foreach (Match m in matches)
{
if (m.Groups["id"] == null || string.IsNullOrEmpty(m.Groups["id"].Value))
{
continue;
}
long attachmentId = 0;
long.TryParse(m.Groups["id"].Value, out attachmentId);
if (attachmentId > 0 && !attachmentIds.Contains(attachmentId))
{
attachmentIds.Add(attachmentId);
}
}
}
IEnumerable <ContentAttachment> attachments = new ContentAttachmentService().Gets(attachmentIds);
if (attachments != null && attachments.Count() > 0)
{
IList <BBTag> bbTags = new List <BBTag>();
string htmlTemplate = "<div class=\"tn-annexinlaid\"><a href=\"{3}\" rel=\"nofollow\">{0}</a>（<em>{1}</em>,<em>下载次数：{2}</em>）<a href=\"{3}\" rel=\"nofollow\">下载</a> </div>";
//解析文本中附件
foreach (var attachment in attachments)
{
bbTags.Add(AddBBTag(htmlTemplate, attachment));
}
body = HtmlUtility.BBCodeToHtml(body, bbTags);
}
return(body);
}
public override void ProcessRequest(HttpContext context)
{
long attachmentId = context.Request.QueryString.Get <long>("attachmentId", 0);
if (attachmentId <= 0)
{
WebUtility.Return404(context);
return;
}
ContentAttachmentService contentAttachmentService = new ContentAttachmentService();
ContentAttachment attachment = contentAttachmentService.Get(attachmentId);
if (attachment == null)
{
WebUtility.Return404(context);
return;
}
IUser currentUser = UserContext.CurrentUser;
//下载计数
CountService countService = new CountService(TenantTypeIds.Instance().ContentAttachment());
countService.ChangeCount(CountTypes.Instance().DownloadCount(), attachment.AttachmentId, attachment.UserId, 1, false);
bool enableCaching = context.Request.QueryString.GetBool("enableCaching", true);
context.Response.Status = "302 Object Moved";
context.Response.StatusCode = 302;
LinktimelinessSettings linktimelinessSettings = DIContainer.Resolve <ISettingsManager <LinktimelinessSettings> >().Get();
string token = Utility.EncryptTokenForAttachmentDownload(linktimelinessSettings.Highlinktimeliness, attachmentId);
context.Response.Redirect(SiteUrls.Instance().ContentAttachmentTempUrl(attachment.AttachmentId, token, enableCaching), true);
context.Response.Flush();
context.Response.End();
}
public override void ProcessRequest(HttpContext context)
{
long attachmentId = context.Request.QueryString.Get <long>("attachmentId", 0);
if (attachmentId <= 0)
{
WebUtility.Return404(context);
return;
}
//检查链接是否过期
string token = context.Request.QueryString.GetString("token", string.Empty);
bool isTimeout = true;
long attachmentIdInToken = Utility.DecryptTokenForAttachmentDownload(token, out isTimeout);
if (isTimeout || attachmentIdInToken != attachmentId)
{
WebUtility.Return403(context);
return;
}
ContentAttachmentService contentAttachmentService = new ContentAttachmentService();
ContentAttachment attachment = contentAttachmentService.Get(attachmentId);
if (attachment == null)
{
WebUtility.Return404(context);
return;
}
bool enableCaching = context.Request.QueryString.GetBool("enableCaching", true);
DateTime lastModified = attachment.DateCreated.ToUniversalTime();
if (enableCaching && IsCacheOK(context, lastModified))
{
WebUtility.Return304(context);
return;
}
//输出文件流
IStoreFile storeFile = storeProvider.GetFile(attachment.GetRelativePath(), attachment.FileName);
if (storeFile == null)
{
WebUtility.Return404(context);
return;
}
context.Response.Clear();
//context.Response.ClearHeaders();
//context.Response.Cache.VaryByParams["attachmentId"] = true;
string fileExtension = attachment.FileName.Substring(attachment.FileName.LastIndexOf('.') + 1);
string friendlyFileName = attachment.FriendlyFileName + (attachment.FriendlyFileName.EndsWith(fileExtension) ? "" : "." + fileExtension);
SetResponsesDetails(context, attachment.ContentType, friendlyFileName, lastModified);
DefaultStoreFile fileSystemFile = storeFile as DefaultStoreFile;
if (!fileSystemFile.FullLocalPath.StartsWith(@"\"))
{
//本地文件下载
context.Response.TransmitFile(fileSystemFile.FullLocalPath);
context.Response.End();
}
else
{
context.Response.AddHeader("Content-Length", storeFile.Size.ToString("0"));
context.Response.Buffer = false;
context.Response.BufferOutput = false;
using (Stream stream = fileSystemFile.OpenReadStream())
{
if (stream == null)
{
WebUtility.Return404(context);
return;
}
long bufferLength = fileSystemFile.Size <= DownloadFileHandlerBase.BufferLength ? fileSystemFile.Size : DownloadFileHandlerBase.BufferLength;
byte[] buffer = new byte[bufferLength];
int readedSize;
while ((readedSize = stream.Read(buffer, 0, (int)bufferLength)) > 0 && context.Response.IsClientConnected)
{
context.Response.OutputStream.Write(buffer, 0, readedSize);
context.Response.Flush();
}
stream.Close();
}
context.Response.End();
}
}