public static FileDownloadInfo CollectInfoFromRequest()
{
FileDownloadInfo info = new FileDownloadInfo();
info.RequestContext = Request.GetRequestQueryValue("requestContext", string.Empty);
info.FilePath = Request.GetRequestQueryValue("filePath", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.FilePath, "filePath");
info.UserID = Request.GetRequestQueryValue("userID", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.UserID, "userID");
info.PathType = Request.GetRequestQueryValue("pathType", PathType.relative);
info.FileName = Request.GetRequestQueryValue("fileName", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.FileName, "fileName");
info.RootPathName = HttpUtility.UrlEncode(Request.GetRequestQueryValue <string>("rootPathName", string.Empty));
ExceptionHelper.CheckStringIsNullOrEmpty(info.RootPathName, "rootPathName");
info.FileFullPath = FileUpload.GetFileFullPath(info.PathType, info.RootPathName, info.FilePath);
info.DownloadType = Request.GetRequestQueryValue("opType", DownloadTypeDefine.Document);
return(info);
}
public static FileDownloadInfo CollectInfoFromRequest()
{
FileDownloadInfo info = new FileDownloadInfo();
info.RequestContext = Request.GetRequestQueryValue("requestContext", string.Empty);
info.FilePath = Request.GetRequestQueryValue("filePath", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.FilePath, "filePath");
info.UserID = Request.GetRequestQueryValue("userID", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.UserID, "userID");
info.PathType = Request.GetRequestQueryValue("pathType", PathType.relative);
info.FileName = Request.GetRequestQueryValue("fileName", string.Empty);
ExceptionHelper.CheckStringIsNullOrEmpty(info.FileName, "fileName");
info.RootPathName = HttpUtility.UrlEncode(Request.GetRequestQueryValue<string>("rootPathName", string.Empty));
ExceptionHelper.CheckStringIsNullOrEmpty(info.RootPathName, "rootPathName");
info.FileFullPath = FileUpload.GetFileFullPath(info.PathType, info.RootPathName, info.FilePath);
info.DownloadType = Request.GetRequestQueryValue("opType", DownloadTypeDefine.Document);
return info;
}
/// <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 = Request.GetRequestQueryValue <bool>("fileReadonly", false);
string materialID = string.Empty;
try
{
string controlID = Request.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 = Request.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 = ((Page)HttpContext.Current.CurrentHandler).FindControlByID(controlID, true);
}
//todo,MaterialControl
//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
{
}
}
}