using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; using System.Threading;using System.Configuration;  namespace FtpSyn {   public class FtpHelper   {     //基本設置 ftp://400:ZOina2017@192.168.10.17/400backup     static private string path = @"ftp://" + ConfigurationManager.AppSettings["FtpServerIP"].ToString() + "/";  //目標路徑     static private string ftpip = ConfigurationManager.AppSettings["FtpServerIP"].ToString();  //ftp IP地址     static private string username = ConfigurationManager.AppSettings["FtpUserName"].ToString();  //ftp用戶名     static private string password = ConfigurationManager.AppSettings["FtpPassWord"].ToString();  //ftp密碼         //獲取ftp上面的文件和文件夾     public static string[] GetFileList(string dir)     {       string[] downloadFiles;       StringBuilder result = new StringBuilder();       FtpWebRequest request;       try       {         request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + dir));         request.UseBinary = true;         request.Credentials = new NetworkCredential(username, password);//設置用戶名和密碼         request.Method = WebRequestMethods.Ftp.ListDirectory;         request.UseBinary = true;         request.UsePassive = false; //選擇主動還是被動模式 , 這句要加上的。         request.KeepAlive = false;//一定要設置此屬性，否則一次性下載多個文件的時候，會出現異常。         WebResponse response = request.GetResponse();         StreamReader reader = new StreamReader(response.GetResponseStream());          string line = reader.ReadLine();         while (line != null)         {           result.Append(line);           result.Append("/n");           line = reader.ReadLine();         }          result.Remove(result.ToString().LastIndexOf('/n'), 1);         reader.Close();         response.Close();         return result.ToString().Split('/n');       }       catch (Exception ex)       {         LogHelper.writeErrorLog("獲取ftp上面的文件和文件夾：" + ex.Message);         downloadFiles = null;         return downloadFiles;       }     }         /// <summary>     /// 從ftp服務器上獲取文件并將內容全部轉換成string返回     /// </summary>     /// <param name="fileName"></param>     /// <param name="dir"></param>     /// <returns></returns>     public static string GetFileStr(string fileName, string dir)     {       FtpWebRequest reqFTP;       try       {         reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + dir + "/" + fileName));         reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;         reqFTP.UseBinary = true;         reqFTP.Credentials = new NetworkCredential(username, password);         reqFTP.UsePassive = false; //選擇主動還是被動模式 , 這句要加上的。         reqFTP.KeepAlive = false;//一定要設置此屬性，否則一次性下載多個文件的時候，會出現異常。         FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();         Stream ftpStream = response.GetResponseStream();         StreamReader reader = new StreamReader(ftpStream);         string fileStr = reader.ReadToEnd();          reader.Close();         ftpStream.Close();         response.Close();         return fileStr;       }       catch (Exception ex)       {         LogHelper.writeErrorLog("獲取ftp文件并讀取內容失敗：" + ex.Message);         return null;       }     }        /// <summary>     /// 獲取文件大小     /// </summary>     /// <param name="file">ip服務器下的相對路徑</param>     /// <returns>文件大小</returns>     public static int GetFileSize(string file)     {       StringBuilder result = new StringBuilder();       FtpWebRequest request;       try       {         request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + file));         request.UseBinary = true;         request.Credentials = new NetworkCredential(username, password);//設置用戶名和密碼         request.Method = WebRequestMethods.Ftp.GetFileSize;          int dataLength = (int)request.GetResponse().ContentLength;          return dataLength;       }       catch (Exception ex)       {         Console.WriteLine("獲取文件大小出錯：" + ex.Message);         return -1;       }     }      /// <summary>     /// 文件上傳     /// </summary>     /// <param name="filePath">原路徑（絕對路徑）包括文件名</param>     /// <param name="objPath">目標文件夾：服務器下的相對路徑 不填為根目錄</param>     public static void FileUpLoad(string filePath,string objPath="")     {       try       {         string url = path;         if(objPath!="")           url += objPath + "/";         try         {            FtpWebRequest reqFTP = null;           //待上傳的文件 （全路徑）           try           {             FileInfo fileInfo = new FileInfo(filePath);             using (FileStream fs = fileInfo.OpenRead())             {               long length = fs.Length;               reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url + fileInfo.Name));                //設置連接到FTP的帳號密碼               reqFTP.Credentials = new NetworkCredential(username, password);               //設置請求完成后是否保持連接               reqFTP.KeepAlive = false;               //指定執行命令               reqFTP.Method = WebRequestMethods.Ftp.UploadFile;               //指定數據傳輸類型               reqFTP.UseBinary = true;                using (Stream stream = reqFTP.GetRequestStream())               {                 //設置緩沖大小                 int BufferLength = 5120;                 byte[] b = new byte[BufferLength];                 int i;                 while ((i = fs.Read(b, 0, BufferLength)) > 0)                 {                   stream.Write(b, 0, i);                 }                 Console.WriteLine("上傳文件成功");               }             }           }           catch (Exception ex)           {             Console.WriteLine("上傳文件失敗錯誤為" + ex.Message);           }           finally           {            }         }         catch (Exception ex)         {           Console.WriteLine("上傳文件失敗錯誤為" + ex.Message);         }         finally         {          }       }       catch (Exception ex)       {         Console.WriteLine("上傳文件失敗錯誤為" + ex.Message);       }     }          /// <summary>     /// 刪除文件     /// </summary>     /// <param name="fileName">服務器下的相對路徑 包括文件名</param>     public static void DeleteFileName(string fileName)     {       try       {         FileInfo fileInf = new FileInfo(ftpip +""+ fileName);         string uri = path + fileName;         FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));         // 指定數據傳輸類型         reqFTP.UseBinary = true;         // ftp用戶名和密碼         reqFTP.Credentials = new NetworkCredential(username, password);         // 默認為true，連接不會被關閉         // 在一個命令之后被執行         reqFTP.KeepAlive = false;         // 指定執行什么命令         reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;         FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();         response.Close();       }       catch (Exception ex)       {         Console.WriteLine("刪除文件出錯：" + ex.Message);       }     }          /// <summary>     /// 新建目錄 上一級必須先存在     /// </summary>     /// <param name="dirName">服務器下的相對路徑</param>     public static void MakeDir(string dirName)     {       try       {         string uri = path + dirName;         FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));         // 指定數據傳輸類型         reqFTP.UseBinary = true;         // ftp用戶名和密碼         reqFTP.Credentials = new NetworkCredential(username, password);         reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;         FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();         response.Close();       }       catch (Exception ex)       {         Console.WriteLine("創建目錄出錯：" + ex.Message);       }     }          /// <summary>     /// 刪除目錄 上一級必須先存在     /// </summary>     /// <param name="dirName">服務器下的相對路徑</param>     public static void DelDir(string dirName)     {       try       {         string uri = path + dirName;         FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));         // ftp用戶名和密碼         reqFTP.Credentials = new NetworkCredential(username, password);         reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;         FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();         response.Close();       }       catch (Exception ex)       {         Console.WriteLine("刪除目錄出錯：" + ex.Message);       }     }      /// <summary>     /// 從ftp服務器上獲得文件夾列表     /// </summary>     /// <param name="RequedstPath">服務器下的相對路徑</param>     /// <returns></returns>     public static List<string> GetDirctory(string RequedstPath)     {       List<string> strs = new List<string>();       try       {         string uri = path + RequedstPath;  //目標路徑 path為服務器地址         FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));         // ftp用戶名和密碼         reqFTP.Credentials = new NetworkCredential(username, password);         reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;         WebResponse response = reqFTP.GetResponse();         StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名          string line = reader.ReadLine();         while (line != null)         {           if (line.Contains("<DIR>"))           {             string msg = line.Substring(line.LastIndexOf("<DIR>")+5).Trim();             strs.Add(msg);           }           line = reader.ReadLine();         }         reader.Close();         response.Close();         return strs;       }       catch (Exception ex)       {         Console.WriteLine("獲取目錄出錯：" + ex.Message);       }       return strs;     }      /// <summary>     /// 從ftp服務器上獲得文件列表     /// </summary>     /// <param name="RequedstPath">服務器下的相對路徑</param>     /// <returns></returns>     public static List<string> GetFile(string RequedstPath)     {       List<string> strs = new List<string>();       try       {         string uri = path + RequedstPath;  //目標路徑 path為服務器地址         FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));         // ftp用戶名和密碼         reqFTP.Credentials = new NetworkCredential(username, password);         reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;         WebResponse response = reqFTP.GetResponse();         StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名          string line = reader.ReadLine();         while (line != null)         {           if (!line.Contains("<DIR>"))           {             string msg = line.Substring(39).Trim();             strs.Add(msg);           }           line = reader.ReadLine();         }         reader.Close();         response.Close();         return strs;       }       catch (Exception ex)       {         Console.WriteLine("獲取文件出錯：" + ex.Message);       }       return strs;     }      } }