void CacheImage(AttachmentInfo ai) { if (ai != null && MimeHelpers.IsImage(ai.Mime)) { Response.Cache.SetCacheability(HttpCacheability.Private); Response.Cache.SetMaxAge(TimeSpan.FromDays(30)); } }
public string SaveFileIfExist(string name) { if (string.IsNullOrWhiteSpace(name)) { return(string.Empty); } IFormFile file = this._httpContextAccessor.HttpContext.Request.Form.Files.GetFile(name); if (file == null) { return(string.Empty); } string extension = MimeHelpers.GetExtension(file.ContentType); if (string.IsNullOrWhiteSpace(extension)) { extension = Path.GetExtension(file.FileName); } Console.WriteLine(file.ContentType); string relativePath = string.Format("\\Upload\\{0}\\{1}{2}{3}", DateTime.Now.ToString("yyyyMM"), DateTime.Now.ToString("yyyyMMddHHmmssfff"), RandomHelpers.RandomInt(1000, 9999), extension ).ToLower(); string absolutePath = this._hostingEnvironment.WebRootPath + relativePath; PathHelpers.EnsureParentDirectory(absolutePath); Stream stream = file.OpenReadStream(); //对大于1MB的图片进行压缩,最大宽度为1024像素 //if (MimeUtils.IsImage(file.ContentType) && file.Length > 1024 * 1000) //{ // ThumbUtils.SendSmallImage(stream, absolutePath, 1024, 1024); //} //else { byte[] buffer = new byte[file.Length]; stream.Read(buffer, 0, buffer.Length); System.IO.File.WriteAllBytes(absolutePath, buffer); } stream.Close(); string host = GetHostUrl(this._httpContextAccessor.HttpContext); return(host + relativePath.Replace("\\", "/")); }
public BinaryContent(string filePath) { OriginalFileName = Path.GetFileName(filePath); ContentType = MimeHelpers.GetMimeMapping(OriginalFileName); _data = File.OpenRead(filePath); }