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);
}
}