[C# FTP] C# FTP 접속 및 파일 업로드 하기

안녕하세요.

 

오늘은 C# FTP 두 번째 시간으로, C#에서 FTP 접속 후, 파일을 업로드 하는 방법에 대하여 알려드리려고 합니다.

 

당연히 테스트할 FTP 서버가 구축되어 있다고 가정하에 블로그 글을 포스팅 합니다!

 

참고해 주세요~~

 

그럼 바로 지난번 FTP 접속 소스코드에 이어서 Upload 소스코드 까지 작성해 보도록 하겠습니다.

 

예제 코드

[FTPManager.cs]

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using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading.Tasks;   namespace FtpTest {     public class FTPManager     {           public delegate void ExceptionEventHandler(string LocationID, Exception ex);         public event ExceptionEventHandler ExceptionEvent;           public Exception LastException = null;           public bool IsConnected { get; set; }           private string ipAddr = string.Empty;         private string port = string.Empty;         private string userId = string.Empty;         private string pwd = string.Empty;           public FTPManager()         {           }           public bool ConnectToServer(string ip, string port, string userId, string pwd)         {             this.IsConnected = false;               this.ipAddr = ip;             this.port = port;             this.userId = userId;             this.pwd = pwd;               string url = string.Format(@"FTP://{0}:{1}/", this.ipAddr, this.port);               try             {                 FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(url);                 ftpRequest.Credentials = new NetworkCredential(userId, pwd);                 ftpRequest.KeepAlive = false;                 ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;                 ftpRequest.UsePassive = false;                   using (ftpRequest.GetResponse())                 {                   }                   this.IsConnected = true;             }             catch (Exception ex)             {                 this.LastException = ex;                   System.Reflection.MemberInfo info =  System.Reflection.MethodInfo.GetCurrentMethod();                 string id = string.Format("{0}.{1}", info.ReflectedType.Name, info.Name);                   if (this.ExceptionEvent != null)                     this.ExceptionEvent(id, ex);                   return false;             }               return true;         }           public bool UpLoad(string folder, string filename)         {             return upload(folder, filename);         }           /// <summary>         /// 파일 업로드         /// </summary>         /// <param name="folder"></param>         /// <param name="filename"></param>         /// <returns></returns>         private bool upload(string folder, string filename)         {             try             {                 makeDir(folder);                   FileInfo fileInf = new FileInfo(filename);                   folder = folder.Replace('\\', '/');                 filename = filename.Replace('\\', '/');                   string url = string.Format(@"FTP://{0}:{1}/{2}{3}", this.ipAddr, this.port, folder, fileInf.Name);                 FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(url);                 ftpRequest.Credentials = new NetworkCredential(userId, pwd);                 ftpRequest.KeepAlive = false;                 ftpRequest.UseBinary = false;                 ftpRequest.UsePassive = false;                   ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;                 ftpRequest.ContentLength = fileInf.Length;                   int buffLength = 2048;                 byte[] buff = new byte[buffLength];                 int contentLen;                   using (FileStream fs = fileInf.OpenRead())                 {                     using (Stream strm = ftpRequest.GetRequestStream())                     {                         contentLen = fs.Read(buff, 0, buffLength);                           while (contentLen != 0)                         {                             strm.Write(buff, 0, contentLen);                             contentLen = fs.Read(buff, 0, buffLength);                         }                     }                       fs.Flush();                     fs.Close();                 }                   if (buff != null)                 {                     Array.Clear(buff, 0, buff.Length);                     buff = null;                 }             }             catch (Exception ex)             {                 this.LastException = ex;                   System.Reflection.MemberInfo info =  System.Reflection.MethodInfo.GetCurrentMethod();                 string id = string.Format("{0}.{1}", info.ReflectedType.Name, info.Name);                   if (this.ExceptionEvent != null)                     this.ExceptionEvent(id, ex);                   return false;             }               return true;         }             private void makeDir(string dirName)         {             string[] arrDir = dirName.Split('\\');             string currentDir = string.Empty;               try             {                 foreach (string tmpFoler in arrDir)                 {                     try                     {                         if (tmpFoler == string.Empty) continue;                           currentDir += @"/" + tmpFoler;                           string url = string.Format(@"FTP://{0}:{1}{2}", this.ipAddr, this.port, currentDir);                         FtpWebRequest ftpRequest =  (FtpWebRequest)WebRequest.Create(url);                         ftpRequest.Credentials = new NetworkCredential(userId, pwd);                           ftpRequest.Method = WebRequestMethods.Ftp.MakeDirectory;                         ftpRequest.KeepAlive = false;                         ftpRequest.UsePassive = false;                           FtpWebResponse response =  (FtpWebResponse)ftpRequest.GetResponse();                         response.Close();                     }                     catch { }                 }             }             catch (Exception ex)             {                 this.LastException = ex;                   System.Reflection.MemberInfo info =  System.Reflection.MethodInfo.GetCurrentMethod();                 string id = string.Format("{0}.{1}", info.ReflectedType.Name, info.Name);                   if (this.ExceptionEvent != null)                     this.ExceptionEvent(id, ex);             }         }           private void checkDir(string localFullPathFile)         {             FileInfo fInfo = new FileInfo(localFullPathFile);               if (!fInfo.Exists)             {                 DirectoryInfo dInfo = new DirectoryInfo(fInfo.DirectoryName);                 if (!dInfo.Exists)                 {                     dInfo.Create();                 }             }         }     } }   Colored by Color Scripter

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[Main.cs]

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using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks;   namespace FtpTest {     class Program     {         static void Main(string[] args)         {             //FTP 접속에 필요한 정보             string addr = string.Empty;             string user = string.Empty;             string pwd = string.Empty;             string port = string.Empty;               addr = "127.0.0.1"; //IP 주소             user = "user01"; //FTP 접속 계정             pwd = "@123qwe"; //FTP 계정 비밀번호             port = "21";     //FTP 접속 Port               FTPManager manager = new FTPManager();               bool result = manager.ConnectToServer(addr, port, user, pwd);                 string path = string.Empty;             string fileName = string.Empty;             string localPath = @"C:\Users\Desktop\"; //바탕화면 경로를 Local Path 기준으로 둠             path = @"DATA"; //업로드 할 파일 저장할 FTP 경로 지정             DirectoryInfo dirInfo = new DirectoryInfo(localPath);             FileInfo[] infos = dirInfo.GetFiles();             if (result == true)             {                 Console.WriteLine("FTP 접속 성공");                 foreach (FileInfo info in dirInfo.GetFiles())                 {                     if (Path.GetExtension(info.Name) == ".txt") //txt 확장자 파일만 FTP 서버에 Upload                     {                         if (manager.UpLoad(path, info.FullName) == false) //파일 업로드                         {                             Console.WriteLine("FTP Upload 실패");                         }                         else                         {                             Console.WriteLine("FTP Upload 시작");                             Console.WriteLine("FTP Upload 완료");                         }                     }                 }             }             else             {                 Console.WriteLine("FTP 접속 실패");             }         }     } } Colored by Color Scripter

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실행 결과

위와 같이 FTP 서버에 업로드 할 .txt 확장자 파일이 2개가 있습니다.

 

프로그램을 실행시킨 결과

 

위와 같이 FTP 경로에 txt 파일 2개가 알맞게 업로드 된 것을 확인하실 수 있습니다.

 

이로써, 오늘은 FTP 접속 및 업로드 하는 방법에 대해서 알아 보았습니다.

 

감사합니다.^^