using System;using System.IO;using System.Net;using System.Text;namespace Whir.Software.DataSyncTools.Library.Helper{ /// <summary> /// Ftp辅助类 /// </summary> public class FtpHelper { private const int BufferSize = 2048; private readonly string _host; private readonly string _pass; private readonly string _user; private FtpWebRequest _ftpRequest; private FtpWebResponse _ftpResponse; private Stream _ftpStream; public FtpHelper(string hostIp, string userName, string password) { _host = hostIp; _user = userName; _pass = password; } /// <summary> /// 下载文件 /// </summary> /// <param name="localFile"></param> /// <param name="remoteFile"></param> /// <returns></returns> public FtpResult Download(string localFile, string remoteFile) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + remoteFile); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpStream = _ftpResponse.GetResponseStream(); var localFileStream = new FileStream(localFile, FileMode.Create); var byteBuffer = new byte[BufferSize]; if (_ftpStream != null) { int bytesRead = _ftpStream.Read(byteBuffer, 0, BufferSize); try { while (bytesRead > 0) { localFileStream.Write(byteBuffer, 0, bytesRead); bytesRead = _ftpStream.Read(byteBuffer, 0, BufferSize); } } catch (Exception ex) { result = new FtpResult(false, ex.Message); return result; } } localFileStream.Close(); if (_ftpStream != null) _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; result = new FtpResult(true, "ok"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 上传文件 /// </summary> /// <param name="localFile"></param> /// <param name="remoteFile"></param> /// <returns></returns> public FtpResult Upload(string localFile, string remoteFile) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + remoteFile); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.UploadFile; _ftpStream = _ftpRequest.GetRequestStream(); var localFileStream = new FileStream(localFile, FileMode.Create); var byteBuffer = new byte[BufferSize]; int bytesSent = localFileStream.Read(byteBuffer, 0, BufferSize); try { while (bytesSent != 0) { _ftpStream.Write(byteBuffer, 0, bytesSent); bytesSent = localFileStream.Read(byteBuffer, 0, BufferSize); } } catch (Exception ex) { result = new FtpResult(false, ex.Message); return result; } localFileStream.Close(); _ftpStream.Close(); _ftpRequest = null; result = new FtpResult(true, "ok"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 删除文件 /// </summary> /// <param name="deleteFile"></param> public FtpResult Delete(string deleteFile) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + deleteFile); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.DeleteFile; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpResponse.Close(); _ftpRequest = null; result = new FtpResult(true, "ok"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 文件重命名 /// </summary> /// <param name="currentFileNameAndPath"></param> /// <param name="newFileName"></param> /// <returns></returns> public FtpResult Rename(string currentFileNameAndPath, string newFileName) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + currentFileNameAndPath); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.Rename; _ftpRequest.RenameTo = newFileName; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpResponse.Close(); _ftpRequest = null; result = new FtpResult(true, "ok"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 创建目录 /// </summary> /// <param name="newDirectory"></param> /// <returns></returns> public FtpResult CreateDirectory(string newDirectory) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + newDirectory); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.MakeDirectory; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpResponse.Close(); _ftpRequest = null; result = new FtpResult(true, "ok"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 取得文件创建时间 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public FtpResult GetFileCreatedDateTime(string fileName) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + fileName); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.GetDateTimestamp; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpStream = _ftpResponse.GetResponseStream(); if (_ftpStream != null) { var ftpReader = new StreamReader(_ftpStream); string fileInfo; try { fileInfo = ftpReader.ReadToEnd(); } catch (Exception ex) { result = new FtpResult(false, ex.Message); ftpReader.Close(); if (_ftpStream != null) _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; return result; } ftpReader.Close(); if (_ftpStream != null) _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; return new FtpResult(true, fileInfo); } return new FtpResult(false, "响应流为空"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 取得文件大小 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public FtpResult GetFileSize(string fileName) { FtpResult result; try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + fileName); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.GetFileSize; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpStream = _ftpResponse.GetResponseStream(); if (_ftpStream != null) { var ftpReader = new StreamReader(_ftpStream); string fileInfo = null; try { while (ftpReader.Peek() != -1) { fileInfo = ftpReader.ReadToEnd(); } } catch (Exception ex) { result = new FtpResult(false, ex.Message); ftpReader.Close(); if (_ftpStream != null) _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; return result; } ftpReader.Close(); _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; return new FtpResult(true, fileInfo); } result = new FtpResult(false, "响应流为空"); } catch (Exception ex) { result = new FtpResult(false, ex.Message); } return result; } /// <summary> /// 显示远程目录结构 /// </summary> /// <param name="directory"></param> /// <returns></returns> public string[] DirectoryListSimple(string directory) { try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + directory); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpStream = _ftpResponse.GetResponseStream(); if (_ftpStream != null) { var ftpReader = new StreamReader(_ftpStream); string directoryRaw = null; try { while (ftpReader.Peek() != -1) { directoryRaw += ftpReader.ReadLine() + "|"; } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } ftpReader.Close(); _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; /* Return the Directory Listing as a string Array by Parsing 'directoryRaw' with the Delimiter you Append (I use | in This Example) */ try { if (directoryRaw != null) { string[] directoryList = directoryRaw.Split("|".ToCharArray()); return directoryList; } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } return new[] { "" }; } /// <summary> /// 远程文件列表 /// </summary> /// <param name="directory"></param> /// <returns></returns> public string[] DirectoryListDetailed(string directory) { try { _ftpRequest = (FtpWebRequest)WebRequest.Create(_host + "/" + directory); _ftpRequest.Credentials = new NetworkCredential(_user, _pass); _ftpRequest.UseBinary = true; _ftpRequest.UsePassive = true; _ftpRequest.KeepAlive = true; _ftpRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails; _ftpResponse = (FtpWebResponse)_ftpRequest.GetResponse(); _ftpStream = _ftpResponse.GetResponseStream(); if (_ftpStream != null) { var ftpReader = new StreamReader(_ftpStream); string directoryRaw = null; try { while (ftpReader.Peek() != -1) { directoryRaw += ftpReader.ReadLine() + "|"; } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } ftpReader.Close(); _ftpStream.Close(); _ftpResponse.Close(); _ftpRequest = null; try { if (directoryRaw != null) { string[] directoryList = directoryRaw.Split("|".ToCharArray()); return directoryList; } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } /* Return an Empty string Array if an Exception Occurs */ return new[] { "" }; } } public class FtpResult { public FtpResult(bool isCusecess, string message) { IsSucess = isCusecess; Message = message; } public bool IsSucess { get; set; } public string Message { get; set; } }}
