var ftp = new FtpHelper("111.111.111.111", "xxxxxxx", "xxxxxx");//初始化ftp，創建ftp對象ftp.uploadFile("F://wms.zip","aaa//bbb");//參數1本地文件，參數2：ftp的目錄ftp.delDirAll("aaa");//參數 要刪除的目錄的 路徑ftp.downloadAllFile("aaa","F://myfile");//參數1:要下載的目錄，參數2，保存到本地的目錄

/// <summary>/// ftp幫助類/// </summary>public class FtpHelper{private string ftpHostIP { get; set; }private string username { get; set; }private string password { get; set; }private string ftpURI { get { return $@"ftp://{ftpHostIP}/"; } }/// <summary>/// 初始化ftp參數/// </summary>/// <param name="ftpHostIP">ftp主機IP</param>/// <param name="username">ftp賬戶</param>/// <param name="password">ftp密碼</param>public FtpHelper(string ftpHostIP, string username, string password){this.ftpHostIP = ftpHostIP;this.username = username;this.password = password;}/// <summary>/// 異常方法委托,通過Lamda委托統一處理異常，方便改寫/// </summary>/// <param name="method">當前執行的方法</param>/// <param name="action"></param>/// <returns></returns>private bool MethodInvoke(string method, Action action){if (action != null){try{action();//Logger.Write2File($@"FtpHelper.{method}:執行成功");FluentConsole.Red.Line($@"FtpHelper.{method}:執行成功");return true;}catch (Exception ex){FluentConsole.Red.Line($@"FtpHelper.{method}:執行失敗", ex.ToString());// Logger.Write2File(action.GetType().Name, ex.ToString());return false;}}else{return false;}}/// <summary>/// 異常方法委托,通過Lamda委托統一處理異常，方便改寫/// </summary>/// </summary>/// <typeparam name="T"></typeparam>/// <param name="method"></param>/// <param name="func"></param>/// <returns></returns>private T MethodInvoke<T>(string method, Func<T> func){if (func != null){try{FluentConsole.Red.Line($@"FtpHelper.{method}:執行成功");return func();//Logger.Write2File($@"FtpHelper.{method}:執行成功");}catch (Exception ex){FluentConsole.Red.Line($@"FtpHelper.{method}:執行失敗:{ex}");// Logger.Write2File($@"FtpHelper.{method}:執行失敗", ex.ToString());return default(T);}}else{return default(T);}}private FtpWebRequest GetRequest(string URI){//根據服務器信息FtpWebRequest創建類的對象FtpWebRequest result = (FtpWebRequest)WebRequest.Create(URI);result.Credentials = new NetworkCredential(username, password);result.KeepAlive = false;result.UsePassive = false;result.UseBinary = true;return result;}/// <summary> 上傳文件</summary>/// <param name="filePath">需要上傳的文件</param>/// <param name="targetDir">目標路徑</param>public bool uploadFile(string filePath, string dirName = ""){FileInfo fileInfo = new FileInfo(filePath);if (dirName != "") makeDir(dirName);string uri = Path.Combine(ftpURI, dirName, fileInfo.Name);return MethodInvoke($@"uploadFile({filePath},{dirName})", () =>{FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.UploadFile;ftp.ContentLength = fileInfo.Length;int buffLength = 2048;byte[] buff = new byte[buffLength];int contentLen;using (FileStream fs = fileInfo.OpenRead()){using (Stream strm = ftp.GetRequestStream()){contentLen = fs.Read(buff, 0, buffLength);while (contentLen != 0){strm.Write(buff, 0, contentLen);contentLen = fs.Read(buff, 0, buffLength);}strm.Close();}fs.Close();}});}/// <summary>/// 檢查目錄是否存在/// </summary>/// <param name="dirName"></param>/// <param name="currentDir"></param>/// <returns></returns>public bool checkDir(string dirName, string currentDir = ""){string uri = Path.Combine(ftpURI, currentDir);return MethodInvoke($@"checkDir({dirName}{currentDir})", () =>{FtpWebRequest ftp = GetRequest(uri);ftp.UseBinary = true;ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;Stream stream = ftp.GetResponse().GetResponseStream();using (StreamReader sr = new StreamReader(stream)){string line = sr.ReadLine();while (!string.IsNullOrEmpty(line)){string dir = string.Empty;if (line.IndexOf("<DIR>") > -1){if (line.Substring(line.IndexOf("<DIR>") + 5).Trim() == dirName)return true;}line = sr.ReadLine();}sr.Close();}stream.Close();return false;});}/// <summary>/// 獲取當前目錄下的目錄及文件/// </summary>/// param name="ftpfileList"></param>/// <param name="dirName"></param>/// <returns></returns>public List<Ftpfile> getFtpFile(string dirName){var ftpfileList = new List<Ftpfile>();string uri = Path.Combine(ftpURI, dirName);return MethodInvoke($@"getFile({dirName})", () =>{var a = new List<List<string>>();FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;Stream stream = ftp.GetResponse().GetResponseStream();using (StreamReader sr = new StreamReader(stream)){string line = sr.ReadLine();while (!string.IsNullOrEmpty(line)){ftpfileList.Add(new Ftpfile { isDir = line.IndexOf("<DIR>") > -1, name = line.Substring(39).Trim(),path= Path.Combine(dirName, line.Substring(39).Trim()) });line = sr.ReadLine();}sr.Close();}return ftpfileList;});}/// <summary>/// 獲取目錄下的所有目錄及文件包括其子目錄和子文件/// </summary>/// param name="ftpfileList"></param>/// <param name="dirName"></param>/// <returns></returns>public List<Ftpfile> getAllFtpFile(List<Ftpfile> ftpfileList, string dirName, int level = 0){var flist = new List<Ftpfile>();string uri = Path.Combine(ftpURI, dirName);return MethodInvoke($@"getFile({dirName})", () =>{var a = new List<List<string>>();FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;Stream stream = ftp.GetResponse().GetResponseStream();using (StreamReader sr = new StreamReader(stream)){string line = sr.ReadLine();while (!string.IsNullOrEmpty(line)){flist.Add(new Ftpfile { isDir = line.IndexOf("<DIR>") > -1, name = line.Substring(39).Trim(), level = level, path= Path.Combine(dirName ,line.Substring(39).Trim()) });ftpfileList.Add(new Ftpfile { isDir = line.IndexOf("<DIR>") > -1, name = line.Substring(39).Trim(), level = level, path = Path.Combine(dirName, line.Substring(39).Trim()) });line = sr.ReadLine();}sr.Close();}var nflist = flist.Where(x => x.isDir).ToList();if (nflist.Count == 0)return ftpfileList;elsereturn getAllFtpFile(ftpfileList, Path.Combine(dirName, nflist.First().name), level + 1);});}/// </summary>/// 在ftp服務器上創建指定目錄,父目錄不存在則創建/// </summary>/// <param name="dirName">創建的目錄名稱</param>public bool makeDir(string dirName){var dirs = dirName.Split('//').ToList();//針對多級目錄分割string currentDir = string.Empty;return MethodInvoke($@"makeDir({dirName})", () =>{foreach (var dir in dirs){if (!checkDir(dir, currentDir))//檢查目錄不存在則創建{currentDir = Path.Combine(currentDir, dir);string uri = Path.Combine(ftpURI, currentDir);FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.MakeDirectory;FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();response.Close();}else{currentDir = Path.Combine(currentDir, dir);}}});}/// <summary> /// 刪除單個文件/// </summary>/// <param name="filePath"></param>public bool delFile(string filePath){string uri = Path.Combine(ftpURI, filePath);return MethodInvoke($@"deleteFile({filePath})", () =>{FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.DeleteFile;FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();response.Close();});}/// <summary> /// 刪除最末及空目錄/// </summary>/// <param name="dirName"></param>private bool delDir(string dirName){string uri = Path.Combine(ftpURI, dirName);return MethodInvoke($@"delDir({dirName})", () =>{FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.RemoveDirectory;FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();response.Close();});}/// <summary> 刪除目錄或者其目錄下所有的文件 </summary>/// <param name="dirName">目錄名稱</param>/// <param name="ifDelSub">是否刪除目錄下所有的文件</param>public void delDirAll(string dirName){var dlist = getAllFtpFile(new List<Ftpfile>(),dirName);dlist.OrderByDescending(x => x.level);//降序排列，先刪除末及文件或空目錄string uri = Path.Combine(ftpURI, dirName);MethodInvoke($@"delDirAll({dirName})", () =>{foreach (var item in dlist){if (item.isDir)//判斷是目錄調用目錄的刪除方法delDir(item.path);elsedelFile(item.path);}});}/// <summary>文件重命名 </summary>/// <param name="currentFilename">當前名稱</param>/// <param name="newFilename">重命名名稱</param>/// <param name="currentFilename">所在的目錄</param>public bool Rename(string currentFilename, string newFilename, string dirName = ""){string uri = Path.Combine(ftpURI, dirName, currentFilename);return MethodInvoke($@"Rename({currentFilename},{newFilename},{dirName})", () =>{FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.Rename;ftp.RenameTo = newFilename;FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();response.Close();});}/// <summary>/// 下載單個文件/// </summary>/// <param name="ftpFilePath">從ftp要下載的文件路徑</param>/// <param name="localDir">下載至本地路徑</param>/// <param name="filename">文件名</param>public bool downloadFile(string ftpFilePath, string saveDir, string filename){string tmpname = Guid.NewGuid().ToString();string uri = Path.Combine(ftpURI, ftpFilePath);return MethodInvoke($@"downloadFile({ftpFilePath},{saveDir},{filename})", () =>{if (!Directory.Exists(saveDir)) Directory.CreateDirectory(saveDir);FtpWebRequest ftp = GetRequest(uri);ftp.Method = WebRequestMethods.Ftp.DownloadFile;using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()){using (Stream responseStream = response.GetResponseStream()){using (FileStream fs = new FileStream(Path.Combine(saveDir, filename), FileMode.CreateNew)){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();}responseStream.Close();}response.Close();}});}/// <summary> /// 從FTP下載整個文件夾 /// </summary> /// <param name="dirName">FTP文件夾路徑</param> /// <param name="saveDir">保存的本地文件夾路徑</param> public void downloadAllFile(string dirName, string saveDir){MethodInvoke($@"downloadAllFile({dirName},{saveDir})", () =>{List<Ftpfile> files = getFtpFile(dirName);if (!Directory.Exists(saveDir)){Directory.CreateDirectory(saveDir);}foreach (var f in files){if (f.isDir) //文件夾，遞歸查詢 {downloadAllFile(Path.Combine(dirName + f.name), Path.Combine(saveDir + f.name));}else //文件，直接下載 {downloadFile(Path.Combine(dirName + f.name), saveDir, f.name);}}});}}public class Ftpfile{public int level { get; set; } = 0;public bool isDir { get; set; }public string name { get; set; }public string path { get; set; } = "";}