小宏學習之路

近來自身有個小需求，需要從主機的指定目錄中定時取得最新更新的一個檔案透過FTP傳回來，用一般的自動備份軟體似乎沒法

自動抓最新的檔案備份，於是就想利用C#內建的FTP上傳類別實現～

但實測過程中發現用外部IP怎麼測都不成功,換localhost就成功了，檢查過防火牆，路由器設定等都沒問題，後來亂試的過程中因我的ftp server 是用 filezilla，發現只要如下圖被我紅色塗掉的地方填入外部ｉｐ即可（預設Default)，且沒改前用　filezilla Client也不行,奇怪以前好像不用設這個,不曉得是否太久沒用記錯還是後來改版有差,特此記錄一下

 

class Program
    {
        static void Main(string[] args)
        {

            DirectoryInfo dirfo = new DirectoryInfo(@"d:\xxxx");

            FileInfo[] files = dirfo.GetFiles("*.*", SearchOption.TopDirectoryOnly);


            //todo..取得的檔案依指定條件排序,MyDateSorter方法裡我是寫依檔案修改時間排序,因我要抓時間最新的一個檔案
            Array.Sort(files, new MyDateSorter());

            //todo...取得修改時間最後的一個檔案

            string LastFileName = files[files.Count() - 1].FullName;
            Console.WriteLine(LastFileName + " , " + files[files.Count() - 1].LastWriteTime);

            foreach (var item in files)
            {

                Console.WriteLine(item.FullName + " , " + item.LastWriteTime);
            }


            // Get the object used to communicate with the server.
            //todo..Create後指定ftp位置及上傳後的檔案名稱(可另指定不同名稱)
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://xxx.xxx.xxx.xxx/完整檔名");
            request.Method = WebRequestMethods.Ftp.UploadFile;
            request.Timeout = 5000000; //todo..設定timeout ,單位毫秒
            request.Proxy = null;      //todo..網路上有人說這個預設會找Proxy,速度很慢
            request.UseBinary = true;  //todo..指定檔案傳輸資料型別
            request.UsePassive = true; //todo..被動模式,bool值
            // This example assumes the FTP site uses anonymous logon.
            request.Credentials = new NetworkCredential("ftp帳號", "ftp密碼");

            // Copy the contents of the file to the request stream.取得要上傳檔案的FileStream並指定檔案開啟及讀取
            //FileStream sourceStream = new System.IO.FileStream(@"D:\xxxx\完整檔名", System.IO.FileMode.Open, System.IO.FileAccess.Read);
            FileStream sourceStream = File.Open(@"D:\xxxx\完整檔名", System.IO.FileMode.Open, System.IO.FileAccess.Read);

            
          
            

          
            
            
          
            

            try
            {
                BinaryReader br = new System.IO.BinaryReader(sourceStream);

                byte[] fileContents = br.ReadBytes(Convert.ToInt32(sourceStream.Length));
                

               sourceStream.Close();
           
           
            //request.ContentLength = fileContents.Length;

            Stream requestStream = request.GetRequestStream();
            requestStream.Write(fileContents, 0, fileContents.Length);
            requestStream.Close();
            
                
            FtpWebResponse response = (FtpWebResponse)request.GetResponse();

            Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);

            response.Close();

            }
            catch (Exception ex)
            {

                Console.WriteLine(ex.Message);
            }

        }


    }


    public class MyDateSorter : IComparer
    {
        #region IComparer Members
        public int Compare(object x, object y)
        {
            if (x == null && y == null)
            {
                return 0;
            }
            if (x == null)
            {
                return -1;
            }
            if (y == null)
            {
                return 1;
            }
            FileInfo xInfo = (FileInfo)x;
            FileInfo yInfo = (FileInfo)y;


            //依名稱排序
            //return xInfo.FullName.CompareTo(yInfo.FullName);//遞增
            //return yInfo.FullName.CompareTo(xInfo.FullName);//遞減

            //依修改日期排序
            return xInfo.LastWriteTime.CompareTo (yInfo.LastWriteTime);//遞增
            //return yInfo.LastWriteTime.CompareTo(xInfo.LastWriteTime);//遞減
        }
        #endregion