public void Img(string id, int?width, int?height) { var t = this.Request.Headers; if (string.IsNullOrEmpty(id)) { return; } FileModel fileModel = FileModel.FirstOrDefault("where id = @id", new { id }); if (fileModel != null) { fileModel.PathName = MTConfig.SaveBasePath + fileModel.PathName; } string imgName = fileModel.PathName; if (null != width && null != height) { string dir = Path.GetDirectoryName(fileModel.PathName); string name = Path.GetFileName(fileModel.PathName); string ext = Path.GetExtension(fileModel.PathName); imgName = dir + "\\" + name.Replace(ext, "") + "_" + width + "_" + height + ext; } //物理路径 string saveFilePath = imgName; //不存在该图片 if (!System.IO.File.Exists(saveFilePath)) { //判断源文件是否存在 string sourceSaveFilePath = fileModel.PathName; if (!System.IO.File.Exists(sourceSaveFilePath)) { return; } //生成缩略图 ImageUtil.GetPicThumbnail(sourceSaveFilePath, saveFilePath, height.Value, width.Value); } Response.ContentType = saveFilePath.ToContentType(); using (FileStream stream = new FileStream(saveFilePath, FileMode.Open, FileAccess.Read)) { int len = (int)stream.Length; byte[] buffer = new byte[len]; stream.Read(buffer, 0, len); Response.OutputStream.Write(buffer, 0, len); }; }