【12】FtpWebRequest上传下载

下载文件

 /// <summary>
 /// 下载文件
 /// </summary>
 /// <param name="filename"></param>
 private static void DownLoadFile(string filename)
 {
     FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);
     req.Method = WebRequestMethods.Ftp.DownloadFile;
     req.UseBinary = true;
     req.UsePassive = true;
     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
     try
     {
         using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
         {
             string localfile = Path.Combine(LocalPath, filename);
             FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);
             int buffer = ;  //1K缓冲
             byte[] b = new byte[buffer];
             int i = ;
             Stream stream = res.GetResponseStream();
             while ((i = stream.Read(b, , buffer)) > )
             {
                 fs.Write(b, , i);
             }
         }
         Console.WriteLine(filename + " download!");
         Log(filename + "下载成功");   

     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.ToString());
         Log(ex.ToString());
     }
     finally
     {   

     }
 }  

获取文件列表

 /// <summary>
 /// 获取FTP文件列表
 /// </summary>
 /// <returns></returns>
 private static List<String> GetFileList()
 {
     List<string> list = new List<string>();
     FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));
     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
     req.Method = WebRequestMethods.Ftp.ListDirectory;
     req.UseBinary = true;
     req.UsePassive = true;
     try
     {
         using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
         {
             using (StreamReader sr = new StreamReader(res.GetResponseStream()))
             {
                 string s;
                 while ((s = sr.ReadLine()) != null)
                 {   

                     list.Add(s);
                 }
             }
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.ToString());
         Log("下载文件列表失败:");
         Log(ex.ToString());
     }
     return list;   

 }  

上传文件

 private static void UploadFile(string localFile)
 {
     FileInfo fi = new FileInfo(localFile);
     FileStream fs = fi.OpenRead();
     long length = fs.Length;
     FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);
     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
     req.Method = WebRequestMethods.Ftp.UploadFile;
     req.UseBinary = true;
     req.ContentLength = length;
     req.Timeout =  * ;
     try
     {
         Stream stream = req.GetRequestStream();   

         int BufferLength = ; //2K
         byte[] b = new byte[BufferLength];
         int i;
         while ((i = fs.Read(b, , BufferLength)) > )
         {
             stream.Write(b, , i);
         }
         stream.Close();
         stream.Dispose();   

     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.ToString());
     }   

 }