/// <summary>
/// 获得openMode
/// </summary>
/// <param name="originalName">文件名</param>
/// <returns></returns>
internal static WebFileOpenMode GetFileOpenMode(string originalName, string userID)
{
WebFileOpenMode openMode = WebFileOpenMode.Attachment;
string fileExt = Path.GetExtension(originalName);
if (string.IsNullOrEmpty(fileExt) == false)
{
string openInlineFileExts = GetOpenInlineFileExts(userID);
if (CheckInFileExts(openInlineFileExts, fileExt))
{
openMode = WebFileOpenMode.Inline;
}
}
return(openMode);
}
/// <summary>
/// 下载模板或已存在的文件
/// </summary>
public static void Download(object sender, BeforeFileDownloadHandler beforeDownloadHandler, PrepareDownloadStreamHandler prepareDownloadStreamHandler, bool raiseEvent)
{
ObjectContextCache.Instance["FileUploadProcessed"] = true;
HttpResponse response = HttpContext.Current.Response;
bool fileReadonly = WebUtility.GetRequestQueryValue <bool>("fileReadonly", false);
string materialID = string.Empty;
try
{
string controlID = WebUtility.GetRequestQueryValue("controlID", string.Empty);
FileDownloadInfo downloadInfo = FileDownloadInfo.CollectInfoFromRequest();
if (File.Exists(downloadInfo.FileFullPath) == false)
{
//是否需要启用映射机制（归档后，文件根目录的映射）
string mappedRootPath = AppPathMappingContext.GetMappedPathName(downloadInfo.RootPathName);
downloadInfo.FileFullPath = GetFileFullPath(downloadInfo.PathType, mappedRootPath, downloadInfo.FilePath);
}
response.ContentType = FileConfigHelper.GetFileContentType(downloadInfo.FileName);
materialID = WebUtility.GetRequestQueryValue("materialID", string.Empty);
if (materialID.IsNullOrEmpty())
{
materialID = UuidHelper.NewUuidString();
}
if (fileReadonly)
{
WebFileOpenMode openMode = FileConfigHelper.GetFileOpenMode(downloadInfo.FileName, downloadInfo.UserID);
response.AppendHeader("content-disposition",
string.Format("{0};filename={1}", openMode == WebFileOpenMode.Inline ? "inline" : "attachment", response.EncodeFileNameInContentDisposition(downloadInfo.FileName)));
}
else
{
string fileIconPath = FileConfigHelper.GetFileIconPath(downloadInfo.FileName);
response.AppendHeader("fileIconPath", HttpUtility.UrlEncode("message=" + fileIconPath));
response.AppendHeader("content-disposition", "attachment;fileName=" + response.EncodeFileNameInContentDisposition(downloadInfo.FileName));
if (downloadInfo.PathType != PathType.relative)
{
response.AppendHeader("materialID", "message=" + materialID);
}
}
bool responseFile = true;
if (beforeDownloadHandler != null && raiseEvent)
{
responseFile = beforeDownloadHandler(sender, downloadInfo);
}
if (responseFile)
{
IMaterialContentPersistManager persistManager =
GetMaterialContentPersistManager(materialID, new FileInfo(downloadInfo.FileFullPath));
using (Stream stream = persistManager.GetMaterialContent(materialID))
{
if (prepareDownloadStreamHandler != null && raiseEvent)
{
PrepareDownloadStreamEventArgs args = new PrepareDownloadStreamEventArgs();
args.DownloadInfo = downloadInfo;
args.InputStream = stream;
args.OutputStream = response.OutputStream;
prepareDownloadStreamHandler(sender, args);
}
else
{
stream.CopyTo(response.OutputStream);
}
}
}
Control control = null;
if (controlID.IsNotEmpty())
{
control = WebControlUtility.FindControlByID((Page)HttpContext.Current.CurrentHandler, controlID, true);
}
if (control != null && control is MaterialControl)
{
DownloadEventArgs args = new DownloadEventArgs(materialID, downloadInfo.FilePath);
((MaterialControl)control).OnDownloadFile(args);
}
}
catch (Exception ex)
{
if (fileReadonly)
{
response.Write(ex.Message);
}
else
{
GenerateErrorInformation(ex.ToString());
}
}
finally
{
try
{
response.End();
}
catch
{
}
}
}
