/// <summary>
/// Saves the posted file to disk and adds its mimetype
/// to the mimetype manager if it does not exist already
/// </summary>
private static void SavePostedFile(BinaryFile file, string path)
{
file.SaveAs(path);
m_Logger.DebugFormat("File '{0}' saved to '{1}'", file.FileName, path);
MimeTypeManager.AddMimeType(file.FileExtension, file.ContentType);
}
/// <summary>
/// Writes the specified file to the response stream with the specified filename.
/// If forceDownload is true, the download will force a download box in the user's browser
/// </summary>
protected void WriteFileToResponseStream(string path, string downloadFilename, bool forceDownload)
{
string extension = Path.GetExtension(path);
string contentType = (forceDownload) ? m_ForceDownloadMimeType : MimeTypeManager.GetMimeType(extension);
WriteFileToResponseStream(path, downloadFilename, contentType);
}
protected void UploadButton_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
MimeTypeManager.AddMimeType(Path.GetExtension(FileUpload1.PostedFile.FileName), FileUpload1.PostedFile.ContentType);
}
Response.Redirect("ViewMimeTypes.aspx");
}
public static void SendFile(string filename, byte[] bytes, bool forceDownload)
{
string downloadFilename = filename;
// Workaround for problem in IE6 where it appends [1] onto filenames containing periods
if (HttpContext.Current.Request.Browser.Browser == "IE")
{
string f = (Path.GetFileNameWithoutExtension(downloadFilename) ?? string.Empty);
string f2 = f.Replace(".", "%2e");
downloadFilename = downloadFilename.Replace(f, f2);
}
// Wrap it in quotes to keep spaces
downloadFilename = string.Format("\"{0}\"", downloadFilename);
// Set content type and disposition
string contentType = MimeTypeManager.GetMimeType(Path.GetExtension(filename));
string contentDisposition = string.Format("filename={0}", downloadFilename);
if (forceDownload)
{
contentDisposition = "attachment;" + contentDisposition;
}
// Set the headers
HttpContext.Current.Response.ContentType = contentType;
HttpContext.Current.Response.AppendHeader("Content-Disposition", contentDisposition);
HttpContext.Current.Response.AppendHeader("Content-Length", bytes.Length.ToString());
// Send the file
if (HttpContext.Current.Response.IsClientConnected)
{
HttpContext.Current.Response.BinaryWrite(bytes);
}
HttpContext.Current.Response.End();
}
protected void btnPost_Click(object sender, EventArgs e)
{
if (action == OperateType.Edit)
{
int id = int.Parse(Request.QueryString["ID"]);
ArticleAttachment attachment = ArticleAttachments.GetAttachment(id);
attachment.Name = txtTitle.Text;
attachment.Desc = txtMemo.Text;
attachment.IsRemote = cboAttachmentType.SelectedIndex == 1;
attachment.Memo = txtMemo.Text;
attachment.Status = csAttachment.SelectedValue;
// 判断是远程则直接更新URL，否则先删除本地文件
if (cboAttachmentType.SelectedIndex == 1)
{
// 远程
attachment.IsRemote = true;
// TODO: 删除文件
string filePath = attachmentLocalPath + attachment.FileName;
File.Delete(filePath);
// 更新字段
attachment.FileName = txtUrl.Text;
}
else
{
// 本地上传
attachment.IsRemote = false;
// TODO: 本地上传
// 获取扩展名
string ext = Path.GetExtension(fuLocal.FileName);
attachment.FileName = Guid.NewGuid().ToString() + ext;
string filePath = attachmentLocalPath + attachment.FileName;
fuLocal.SaveAs(filePath);
}
attachment.ContentType = MimeTypeManager.GetMimeType(attachment.FileName);
attachment.UpdateTime = DateTime.Now;
attachment.UpdateUser = Profile.AccountInfo.UserID;
DataActionStatus status = ArticleAttachments.UpdateArticleAttachment(attachment);
if (status == DataActionStatus.DuplicateName)
{
mbMsg.ShowMsg("修改附件失败，存在同名附件！");
}
else if (status == DataActionStatus.UnknownFailure)
{
throw new HHException(ExceptionType.Failed, "更新附件信息失败，请联系管理员！");
}
else if (status == DataActionStatus.Success)
{
throw new HHException(ExceptionType.Success, "操作成功，已成功更新附件！");
}
}
else
{
ArticleAttachment attachment = new ArticleAttachment();
attachment.Name = txtTitle.Text;
attachment.Desc = txtMemo.Text;
attachment.IsRemote = cboAttachmentType.SelectedIndex == 1;
attachment.Memo = txtMemo.Text;
attachment.Status = csAttachment.SelectedValue;
// 判断是远程则直接更新URL
if (cboAttachmentType.SelectedIndex == 1)
{
// 远程
attachment.IsRemote = true;
// url字段
attachment.FileName = txtUrl.Text;
}
else
{
// 本地上传
attachment.IsRemote = false;
// TODO: 本地上传
string ext = Path.GetExtension(fuLocal.FileName);
attachment.FileName = Guid.NewGuid().ToString() + ext;
string filePath = attachmentLocalPath + attachment.FileName;
fuLocal.SaveAs(filePath);
}
attachment.ContentType = MimeTypeManager.GetMimeType(attachment.FileName);
attachment.CreateTime = DateTime.Now;
attachment.CreateUser = Profile.AccountInfo.UserID;
attachment.UpdateTime = DateTime.Now;
attachment.UpdateUser = Profile.AccountInfo.UserID;
DataActionStatus status;
ArticleAttachments.AddArticleAttachment(attachment, out status);
if (status == DataActionStatus.DuplicateName)
{
throw new HHException(ExceptionType.Failed, "新增附件失败，存在同名附件！");
}
else if (status == DataActionStatus.UnknownFailure)
{
throw new HHException(ExceptionType.Failed, "新增附件失败，请联系管理员！");
}
else if (status == DataActionStatus.Success)
{
throw new HHException(ExceptionType.Success, "操作成功，已成功增加一个新的附件！");
}
}
}
public void ProcessRequest(HttpContext context)
{
FileSystemStorageFile file = FileStorageProvider.GetStorageFileByUrl(context.Request.Path) as FileSystemStorageFile;
if (file == null)
{
//文件未找到
context.Response.StatusCode = 404;
return;
}
DateTime lastModified = (new FileInfo(file.FullLocalPath)).LastWriteTime;
DateTime currentLastModifiedDate = DateTime.MinValue;
//文件未被修改过
DateTime.TryParse(context.Request.Headers["If-Modified-Since"] ?? "", out currentLastModifiedDate);
if (Math.Abs(((TimeSpan)lastModified.ToUniversalTime().Subtract(currentLastModifiedDate.ToUniversalTime())).TotalSeconds) <= 1)
{
context.Response.StatusCode = 304;
context.Response.Status = "304 Not Modified";
return;
}
long eTag = 0;
if (long.TryParse(context.Request.Headers["If-None-Match"] ?? "", out eTag))
{
currentLastModifiedDate = new DateTime(eTag);
if (lastModified == currentLastModifiedDate)
{
context.Response.StatusCode = 304;
context.Response.Status = "304 Not Modified";
return;
}
}
//设置客户端设置
context.Response.ContentType = MimeTypeManager.GetMimeType(file.FileName);
context.Response.Cache.SetAllowResponseInBrowserHistory(true);
context.Response.Cache.SetLastModified(lastModified.ToUniversalTime());
context.Response.Cache.SetETag(lastModified.Ticks.ToString());
string disposition;
if (context.Response.ContentType == "application/pdf" || context.Response.ContentType == "application/octet-stream")
{
disposition = "attachment";
}
else
{
disposition = "inline";
}
//设置文件名称
if (context.Request.Browser.Browser.IndexOf("Netscape") != -1)
{
context.Response.AddHeader("Content-disposition", disposition + "; filename*0*="
+ context.Server.UrlEncode(GlobalSettings.UrlDecodeFileComponent(file.FileName)).Replace("+", "%20") + "");
}
else
{
context.Response.AddHeader("Content-disposition", disposition + "; filename="
+ context.Server.UrlEncode(GlobalSettings.UrlDecodeFileComponent(file.FileName)).Replace("+", "%20") + "");
}
if (!file.FullLocalPath.StartsWith(@"\"))
{
context.Response.TransmitFile(file.FullLocalPath);
}
else
{
context.Response.AddHeader("Content-Length", file.ContentLength.ToString("0"));
context.Response.Buffer = false;
context.Response.BufferOutput = false;
using (Stream s = new FileStream(file.FullLocalPath, FileMode.Open, FileAccess.Read))
{
byte[] buffer = new byte[64 * 1024];
int read;
while ((read = s.Read(buffer, 0, buffer.Length)) > 0)
{
if (!context.Response.IsClientConnected)
{
break;
}
context.Response.OutputStream.Write(buffer, 0, read);
context.Response.OutputStream.Flush();
}
context.Response.OutputStream.Flush();
context.Response.Flush();
context.Response.Close();
s.Close();
}
}
}
