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C#FTP上传文件至服务器代码

 

 /// <summary> /// 下载文件 /// </summary> /// <param name="localDir">下载至本地路径</param> /// <param name="ftpDir">ftp目标文件路径</param> /// <param name="FtpFile">从ftp要下载的文件名</param> /// <param name="hostname">ftp地址即IP</param> /// <param name="username">ftp用户名</param> /// <param name="password">ftp密码</param> public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password) { string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile; string tmpname = Guid.NewGuid().ToString(); string localfile = localDir + @"\" + tmpname; System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile; ftp.UseBinary = true; ftp.UsePassive = false; using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()) { using (Stream responseStream = response.GetResponseStream()) { //loop to read & write to file using (FileStream fs = new FileStream(localfile, FileMode.CreateNew)) { try { byte[] buffer = new byte[2048]; int read = 0; do { read = responseStream.Read(buffer, 0, buffer.Length); fs.Write(buffer, 0, read); } while (!(read == 0)); responseStream.Close(); fs.Flush(); fs.Close(); } catch (Exception) { //catch error and delete file only partially downloaded  fs.Close(); //delete target file as it's incomplete  File.Delete(localfile); throw; } } responseStream.Close(); } response.Close(); } try { File.Delete(localDir + @"\" + FtpFile); File.Move(localfile, localDir + @"\" + FtpFile); ftp = null; ftp = GetRequest(URI, username, password); ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; ftp.GetResponse(); } catch (Exception ex) { File.Delete(localfile); throw ex; } // 记录日志 "从" + URI.ToString() + "下载到" + localDir + @"\" + FtpFile + "成功." ); ftp = null; } /// <summary> /// 搜索远程文件 /// </summary> /// <param name="targetDir"></param> /// <param name="hostname"></param> /// <param name="username"></param> /// <param name="password"></param> /// <param name="SearchPattern"></param> /// <returns></returns> public static List<string> ListDirectory(string targetDir, string hostname, string username, string password, string SearchPattern) { List<string> result = new List<string>(); try { string URI = "FTP://" + hostname + "/" + targetDir + "/" + SearchPattern; System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectory; ftp.UsePassive = true; ftp.UseBinary = true; string str = GetStringResponse(ftp); str = str.Replace("\r\n", "\r").TrimEnd('\r'); str = str.Replace("\n", "\r"); if (str != string.Empty) result.AddRange(str.Split('\r')); return result; } catch { } return null; } private static string GetStringResponse(FtpWebRequest ftp) { //Get the result, streaming to a string string result = ""; using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()) { long size = response.ContentLength; using (Stream datastream = response.GetResponseStream()) { using (StreamReader sr = new StreamReader(datastream, System.Text.Encoding.Default)) { result = sr.ReadToEnd(); sr.Close(); } datastream.Close(); } response.Close(); } return result; }

 

 

 

 

 

 

 

 

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  1. #1

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    dp5681年前 (2022-09-13)Reply