技術標籤：c#小程式

c# 小程式上傳圖片,後臺程式碼

/// <summary>
/// 上傳圖片
/// </summary>
/// <returns>path 預設路徑 /Resource/WeChatFile </returns>
public ResultModel Pic()
{
   try
   {
       string path = HttpContext.Current.Request["path"];
       if (string.IsNullOrEmpty(path))
       {
           path =
 
 "/upload/MiniApp/";
       }
       HttpFileCollection files = HttpContext.Current.Request.Files;
       List<string> pathList = new List<string>();
       foreach (string key in files.AllKeys)
       {
           HttpPostedFile file = files[key];//file.ContentLength檔案長度  
           if
 
 (file.ContentLength == 0 || string.IsNullOrEmpty(file.FileName))
           {
               return Error("上傳檔案失敗,檔案不存在!");
           }
           else
           {
               #region 儲存圖片

               string FathName = Guid.NewGuid().ToString("N");
               string FileEextension =
 
 Path.GetExtension(files[0].FileName);
               string virtualPath = string.Format("{0}/{1}", path, FathName + FileEextension);
               string virtualPath_1 = string.Format("{0}/{1}", path, FathName + "_1" + FileEextension);
               string fullFileName = HttpContext.Current.Server.MapPath("~" + virtualPath);
               string fullFileName_1 = HttpContext.Current.Server.MapPath("~" + virtualPath_1);
               //建立資料夾，儲存檔案
               var filePath = Path.GetDirectoryName(fullFileName);
               Directory.CreateDirectory(filePath);
               file.SaveAs(fullFileName_1);

               //壓縮圖片
               if (file.ContentLength > (90 * 1024))
               {
                   Image img = new Bitmap(fullFileName_1);
                   ImageHelper.GetPicThumbnail(fullFileName_1, fullFileName, img.Height, img.Width, 10);
                   img.Dispose();
               }
               else
               {
                   file.SaveAs(fullFileName);
               }

               #endregion

               pathList.Add(virtualPath);
           }
       }
       return Success("檔案上傳成功", pathList);

   }
   catch (Exception ex)
   {
       return Error("上傳檔案失敗," + ex.Message);
   }
}

操作結果返回類 ResultModel

    /// <summary>
    /// 操作結果 
    /// </summary>
    public class ResultModel
    {
        /// <summary>
        /// 是否成功
        /// </summary>
        public bool IsSucceed { get; set; }

        /// <summary>
        /// 操作結果型別
        /// </summary>
        public ResultType type { get; set; }

        /// <summary>
        /// 錯誤編碼
        /// </summary>
        public int errorcode { get; set; }

        /// <summary>
        /// 訊息內容
        /// </summary>
        public string message { get; set; }

        /// <summary>
        /// 返回資料
        /// </summary>
        public object resultdata { get; set; }

        /// <summary>
        /// 操作時間
        /// </summary>
        public DateTime time { get; set; }


    }
    /// <summary>
    /// 表示 ajax 操作結果型別的列舉
    /// </summary>
    public enum ResultType
    {
        /// <summary>
        /// 訊息結果型別
        /// </summary>
        info = 0,

        /// <summary>
        /// 成功結果型別
        /// </summary>
        success = 1,

        /// <summary>
        /// 警告結果型別
        /// </summary>
        warning = 2,

        /// <summary>
        /// 異常結果型別
        /// </summary>
        error = 3
    }