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(shè)置 ftp://400:ZOina2017@192.168.10.17/400backup
     static private string path = @"ftp://" + ConfigurationManager.AppSettings["FtpServerIP"].ToString() + "/";  //目標(biāo)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(shè)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(shè)置此屬性，否則一次性下載多個文件的時候，會出現(xiàn)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(wù)器上獲取文件并將內(nèi)容全部轉(zhuǎn)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(shè)置此屬性，否則一次性下載多個文件的時候，會出現(xiàn)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(nèi)容失?。? + ex.Message);
         return null;
       }
     } 
 
 
     /// <summary>
     /// 獲取文件大小
     /// </summary>
     /// <param name="file">ip服務(wù)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(shè)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(biāo)文件夾：服務(wù)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(shè)置連接到FTP的帳號密碼
               reqFTP.Credentials = new NetworkCredential(username, password);
               //設(shè)置請求完成后是否保持連接
               reqFTP.KeepAlive = false;
               //指定執(zhí)行命令
               reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
               //指定數(shù)據(jù)傳輸類型
               reqFTP.UseBinary = true;
 
               using (Stream stream = reqFTP.GetRequestStream())
               {
                 //設(shè)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(wù)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(shù)據(jù)傳輸類型
         reqFTP.UseBinary = true;
         // ftp用戶名和密碼
         reqFTP.Credentials = new NetworkCredential(username, password);
         // 默認(rèn)為true，連接不會被關(guān)閉
         // 在一個命令之后被執(zhí)行
         reqFTP.KeepAlive = false;
         // 指定執(zhí)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(wù)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(shù)據(jù)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(chuàng)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(wù)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(wù)器上獲得文件夾列表
     /// </summary>
     /// <param name="RequedstPath">服務(wù)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(biāo)路徑 path為服務(wù)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(wù)器上獲得文件列表
     /// </summary>
     /// <param name="RequedstPath">服務(wù)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(biāo)路徑 path為服務(wù)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;
     }
   
   }
 }