這篇文章主要介紹了ASP.net WebAPI 上傳圖片實例，有需要的朋友可以參考一下
代碼如下: [HttpPost] public Task<Hashtable> ImgUpload() { // 檢查是否是 multipart/form-data if (!Request.Content.IsMimeMultipartContent("form-data")) throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType); //文件保存目錄路徑 string SaveTempPath = "~/SayPlaces/" + "/SayPic/SayPicTemp/"; String dirTempPath = HttpContext.Current.Server.MapPath(SaveTempPath); // 設置上傳目錄 var provider = new MultipartFormDataStreamProvider(dirTempPath); //var queryp = Request.GetQueryNameValuePairs();//獲得查詢字符串的鍵值集合 var task = Request.Content.ReadAsMultipartAsync(provider). ContinueWith<Hashtable>(o => { Hashtable hash = new Hashtable(); hash["error"] = 1; hash["errmsg"] = "上傳出錯"; var file = provider.FileData[0];//provider.FormData string orfilename = file.Headers.ContentDisposition.FileName.TrimStart('"').TrimEnd('"'); FileInfo fileinfo = new FileInfo(file.LocalFileName); //最大文件大小 int maxSize = 10000000; if (fileinfo.Length <= 0) { hash["error"] = 1; hash["errmsg"] = "請選擇上傳文件。"; } else if (fileinfo.Length > maxSize) { hash["error"] = 1; hash["errmsg"] = "上傳文件大小超過限制。"; } else { string fileExt = orfilename.Substring(orfilename.LastIndexOf('.')); //定義允許上傳的文件擴展名 String fileTypes = "gif,jpg,jpeg,png,bmp"; if (String.IsNullOrEmpty(fileExt) || Array.IndexOf(fileTypes.Split(','), fileExt.Substring(1).ToLower()) == -1) { hash["error"] = 1; hash["errmsg"] = "上傳文件擴展名是不允許的擴展名。"; } else { String ymd = DateTime.Now.ToString("yyyyMMdd", System.Globalization.DateTimeFormatInfo.InvariantInfo); String newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", System.Globalization.DateTimeFormatInfo.InvariantInfo); fileinfo.CopyTo(Path.Combine(dirTempPath, newFileName + fileExt), true); fileinfo.Delete(); hash["error"] = 0; hash["errmsg"] = "上傳成功"; } } return hash; }); return task; }
