public override void ProcessRequest(HttpContext context) { HttpRequest request = context.Request; HttpResponse response = context.Response; string fileName = request.QueryString["fileName"] == null ? string.Empty : request.QueryString["fileName"]; string id = request.QueryString["id"] == null ? string.Empty : request.QueryString["id"]; int targetWidth = request.QueryString["targetWidth"] == null ? 100 : Convert.ToInt32(request.QueryString["targetWidth"]); int targetHeight = request.QueryString["targetHeight"] == null ? 100 : Convert.ToInt32(request.QueryString["targetHeight"]); string attachmentEntityClassName = request.QueryString["attachmentEntityClassName"] == null ? "X3Platform.AttachmentStorage.AttachmentFileInfo" : request.QueryString["attachmentEntityClassName"]; if (string.IsNullOrEmpty(fileName)) { // 以参数形式生成图片 if (!string.IsNullOrEmpty(id)) { // 读取附件原始信息 IAttachmentFileInfo attachment = (IAttachmentFileInfo)SpringContext.Instance.Application.GetObject(attachmentEntityClassName);; attachment.Restore(id); if (attachment.FileData == null) { response.StatusCode = 404; response.Write("Not Found"); return; } string defaultThumbnail = string.Format("{0}_{1}x{2}", attachment.FileType.Replace(".", ""), targetWidth, targetHeight); if (AttachmentStorageConfigurationView.Instance.DefaultThumbnails.IndexOf(defaultThumbnail) > -1) { response.Redirect(AttachmentStorageConfigurationView.Instance.VirtualUploadFolder + "thumbnails/" + defaultThumbnail + ".png"); response.End(); } fileName = string.Format("{0}_{1}x{2}{3}", id, targetWidth, targetHeight, attachment.FileType); Stream stream = ByteHelper.ToStream(attachment.FileData); // 创建缩略图 ThumbnailManagement.CreateThumbnail(id, stream, attachment.FileType, targetWidth, targetHeight); } } else { // 直接以文件名方式访问 if (!ThumbnailManagement.IsExist(fileName)) { response.StatusCode = 404; response.Write("Not Found"); return; } } response.Redirect(AttachmentStorageConfigurationView.Instance.VirtualUploadFolder + "thumbnails/" + fileName); }
public override void ProcessRequest(HttpContext context) { HttpRequest request = context.Request; HttpResponse response = context.Response; try { HttpPostedFile file = request.Files["fileData"]; // 输出类型 id uri base64 string outputType = request.Form["outputType"]; string attachmentId = request.Form["attachmentId"]; string entityId = request.Form["entityId"]; string entityClassName = request.Form["entityClassName"]; string attachmentEntityClassName = request.Form["attachmentEntityClassName"]; string attachmentFolder = request.Form["attachmentFolder"]; // 调整图片大小 int resize = request.Form["resize"] == null ? 0 : Convert.ToInt32(request.Form["resize"]); int targetWidth = request.Form["targetWidth"] == null ? 0 : Convert.ToInt32(request.Form["targetWidth"]); int targetHeight = request.Form["targetHeight"] == null ? 0 : Convert.ToInt32(request.Form["targetHeight"]); // 设置图片缩略图 int thumbnail = request.Form["thumbnail"] == null ? 0 : Convert.ToInt32(request.Form["thumbnail"]); int thumbnailWidth = request.QueryString["targetWidth"] == null ? 100 : Convert.ToInt32(request.QueryString["thumbnailWidth"]); int thumbnailHeight = request.QueryString["thumbnailHeight"] == null ? 100 : Convert.ToInt32(request.QueryString["thumbnailHeight"]); // 匿名用户上传文件的文件, 存放在 anonymous 目录 if (KernelContext.Current.User == null) { attachmentFolder = "anonymous"; } IAttachmentFileInfo attachment = UploadFileHelper.CreateAttachmentFile( entityId, entityClassName, attachmentEntityClassName, attachmentFolder, file); // Office 在线客户端上传方式 // 支持客户端赋值附件标识 if (!string.IsNullOrEmpty(attachmentId)) { if (AttachmentStorageContext.Instance.AttachmentFileService.IsExist(attachmentId)) { HttpContext.Current.Response.StatusCode = 500; HttpContext.Current.Response.StatusDescription = "Attachment id already exists."; HttpContext.Current.Response.End(); } else { attachment.Id = attachmentId; } } // 检测文件最小限制 if (attachment.FileSize < AttachmentStorageConfigurationView.Instance.AllowMinFileSize) { HttpContext.Current.Response.StatusCode = 500; HttpContext.Current.Response.StatusDescription = "Attachment file size is too small."; HttpContext.Current.Response.End(); } // 检测文件最大限制 if (attachment.FileSize > AttachmentStorageConfigurationView.Instance.AllowMaxFileSize) { HttpContext.Current.Response.StatusCode = 500; HttpContext.Current.Response.StatusDescription = "Attachment file size is too big."; HttpContext.Current.Response.End(); } // 检测文件名后缀限制 if (!Regex.IsMatch(attachment.FileType, AttachmentStorageConfigurationView.Instance.AllowFileTypes)) { HttpContext.Current.Response.StatusCode = 500; HttpContext.Current.Response.StatusDescription = "Attachment file type is invalid."; HttpContext.Current.Response.End(); } if (HttpContext.Current.Response.StatusCode != 500) { // 调整图片大小 if (resize == 1) { Image image = Image.FromStream(ByteHelper.ToStream(attachment.FileData)); attachment.FileData = ThumbnailManagement.Resize(image, attachment.FileType, targetWidth, targetHeight); } if (outputType == "base64") { // 输出 Base64 HttpContext.Current.Response.StatusCode = 200; HttpContext.Current.Response.Write(ByteHelper.ToBase64(attachment.FileData)); } else { attachment.Save(); // 调整图片大小 if (thumbnail == 1) { Image image = Image.FromStream(ByteHelper.ToStream(attachment.FileData)); attachment.FileData = ThumbnailManagement.Resize(image, attachment.FileType, thumbnailWidth, thumbnailHeight); var fileName = string.Format("{0}_{1}x{2}{3}", attachment.Id, thumbnailWidth, thumbnailHeight, attachment.FileType); Stream stream = ByteHelper.ToStream(attachment.FileData); // 创建缩略图 ThumbnailManagement.CreateThumbnail(attachment.Id, stream, attachment.FileType, thumbnailWidth, thumbnailHeight); } HttpContext.Current.Response.StatusCode = 200; if (outputType == "uri") { // 输出 uri HttpContext.Current.Response.Write(attachment.VirtualPath.Replace("{uploads}", AttachmentStorageConfigurationView.Instance.VirtualUploadFolder)); } else { // 输出 id HttpContext.Current.Response.Write(attachment.Id); } } } } catch (Exception ex) { // If any kind of error occurs return a 500 Internal Server error HttpContext.Current.Response.StatusCode = 500; HttpContext.Current.Response.StatusDescription = "An error occured"; HttpContext.Current.Response.End(); KernelContext.Log.Error(ex.Message, ex); } }