public System.Collections.Generic.IEnumerable<IStoreFile> GetFiles(string relativePath, bool isOnlyCurrentFolder)
{
if (!DefaultStoreProvider.IsValidPath(relativePath))
{
throw new System.ArgumentException("The provided path is invalid", "relativePath");
}
System.Collections.Generic.List<IStoreFile> list = new System.Collections.Generic.List<IStoreFile>();
string fullLocalPath = this.GetFullLocalPath(relativePath, string.Empty);
if (System.IO.Directory.Exists(fullLocalPath))
{
System.IO.SearchOption searchOption = System.IO.SearchOption.TopDirectoryOnly;
if (!isOnlyCurrentFolder)
{
searchOption = System.IO.SearchOption.AllDirectories;
}
System.IO.FileInfo[] files = new System.IO.DirectoryInfo(fullLocalPath).GetFiles("*.*", searchOption);
for (int i = 0; i < files.Length; i++)
{
System.IO.FileInfo fileInfo = files[i];
if ((fileInfo.Attributes & System.IO.FileAttributes.Hidden) != System.IO.FileAttributes.Hidden)
{
DefaultStoreFile item;
if (isOnlyCurrentFolder)
{
item = new DefaultStoreFile(relativePath, fileInfo);
}
else
{
item = new DefaultStoreFile(this.GetRelativePath(fileInfo.FullName, true), fileInfo);
}
list.Add(item);
}
}
}
return list;
}
public override void ProcessRequest(HttpContext context)
{
long attachmentId = context.Request.QueryString.Get <long>("attachmentId", 0);
if (attachmentId <= 0)
{
WebUtility.Return404(context);
return;
}
string tenantTypeId = context.Request.QueryString.GetString("tenantTypeId", string.Empty);
if (string.IsNullOrEmpty(tenantTypeId))
{
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;
}
AttachmentService <Attachment> attachmentService = new AttachmentService <Attachment>(tenantTypeId);
Attachment attachment = attachmentService.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();
}
//context.Response.OutputStream.Flush();
//context.Response.Flush();
stream.Close();
}
context.Response.End();
}
}
