FTP上传下载

/// <summary>         /// 上传文件         /// </summary>         /// <param name="fileinfo">需要上传的文件</param>         /// <param name="targetDir">目标路径</param>         /// <param name="hostname">ftp地址</param>         /// <param name="username">ftp用户名</param>         /// <param name="password">ftp密码</param>         public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password)         {             //1. check target             string target;             if (targetDir.Trim() == "")             {                 return;             }             target = Guid.NewGuid().ToString();  //使用临时文件名            

            string URI = "FTP://" + hostname + "/" + targetDir + "/" + target;             ///WebClient webcl = new WebClient();             System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);

            //设置FTP命令 设置所要执行的FTP命令，             //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假设此处为显示指定路径下的文件列表             ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;             //指定文件传输的数据类型             ftp.UseBinary = true;             ftp.UsePassive = true;

            //告诉ftp文件大小             ftp.ContentLength = fileinfo.Length;             //缓冲大小设置为2KB             const int BufferSize = 2048;             byte[] content = new byte[BufferSize - 1 + 1];             int dataRead;

            //打开一个文件流 (System.IO.FileStream) 去读上传的文件             using (FileStream fs = fileinfo.OpenRead())             {                 try                 {                     //把上传的文件写入流                     using (Stream rs = ftp.GetRequestStream())                     {                         do                         {                             //每次读文件流的2KB                             dataRead = fs.Read(content, 0, BufferSize);                             rs.Write(content, 0, dataRead);                         } while (!(dataRead < BufferSize));                         rs.Close();                     }

                }                 catch (Exception ex) { }                 finally                 {                     fs.Close();                 }

            }

            ftp = null;             //设置FTP命令             ftp = GetRequest(URI, username, password);             ftp.Method = System.Net.WebRequestMethods.Ftp.Rename; //改名             ftp.RenameTo = fileinfo.Name;             try             {                 ftp.GetResponse();             }             catch (Exception ex)             {                 ftp = GetRequest(URI, username, password);                 ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; //删除                 ftp.GetResponse();                 throw ex;             }             finally             {                 //fileinfo.Delete();             }

            // 可以记录一个日志  "上传" + fileinfo.FullName + "上传到" + "FTP://" + hostname + "/" + targetDir + "/" + fileinfo.Name + "成功." );             ftp = null;

            #region             /*****              *FtpWebResponse              * ****/             //FtpWebResponse ftpWebResponse = (FtpWebResponse)ftp.GetResponse();             #endregion         }

 

 

/// <summary>         /// 下载文件         /// </summary>         /// <param name="localDir">下载至本地路径</param>         /// <param name="FtpDir">ftp目标文件路径</param>         /// <param name="FtpFile">从ftp要下载的文件名</param>         /// <param name="hostname">ftp地址即IP</param>         /// <param name="username">ftp用户名</param>         /// <param name="password">ftp密码</param>         public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password)         {             string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile;             string tmpname = Guid.NewGuid().ToString();             string localfile = localDir + @"\" + tmpname;

            System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);             ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;             ftp.UseBinary = true;             ftp.UsePassive = false;

            using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())             {                 using (Stream responseStream = response.GetResponseStream())                 {                     //loop to read & write to file                     using (FileStream fs = new FileStream(localfile, FileMode.CreateNew))                     {                         try                         {                             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();                         }                         catch (Exception)                         {                             //catch error and delete file only partially downloaded                             fs.Close();                             //delete target file as it's incomplete                             File.Delete(localfile);                             throw;                         }                     }

                    responseStream.Close();                 }

                response.Close();             }

 

            try             {                 File.Delete(localDir + @"\" + FtpFile);                 File.Move(localfile, localDir + @"\" + FtpFile);

                ftp = null;                 ftp = GetRequest(URI, username, password);                 ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile;                 ftp.GetResponse();

            }             catch (Exception ex)             {                 File.Delete(localfile);                 throw ex;             }

            // 记录日志 "从" + URI.ToString() + "下载到" + localDir + @"\" + FtpFile + "成功." );             ftp = null;         }

        /// <summary>         /// 搜索远程文件         /// </summary>         /// <param name="targetDir"></param>         /// <param name="hostname"></param>         /// <param name="username"></param>         /// <param name="password"></param>         /// <param name="SearchPattern"></param>         /// <returns></returns>         public static List<string> ListDirectory(string targetDir, string hostname, string username, string password, string SearchPattern)         {             List<string> result = new List<string>();             try             {                 string URI = "FTP://" + hostname + "/" + targetDir + "/" + SearchPattern;

                System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);                 ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectory;                 ftp.UsePassive = true;                 ftp.UseBinary = true;

                string str = GetStringResponse(ftp);                 str = str.Replace("\r\n", "\r").TrimEnd('\r');                 str = str.Replace("\n", "\r");                 if (str != string.Empty)                     result.AddRange(str.Split('\r'));

                return result;             }             catch { }             return null;         }

        private static string GetStringResponse(FtpWebRequest ftp)         {             //Get the result, streaming to a string             string result = "";             using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())             {                 long size = response.ContentLength;                 using (Stream datastream = response.GetResponseStream())                 {                     using (StreamReader sr = new StreamReader(datastream, System.Text.Encoding.Default))                     {                         result = sr.ReadToEnd();                         sr.Close();                     }

                    datastream.Close();                 }

                response.Close();             }

            return result;         }

 

 

/// 在ftp服务器上创建目录         /// </summary>         /// <param name="dirName">创建的目录名称</param>         /// <param name="ftpHostIP">ftp地址</param>         /// <param name="username">用户名</param>         /// <param name="password">密码</param>         public void MakeDir(string dirName,string ftpHostIP,string username,string password)         {             try             {                 string uri = "ftp://" + ftpHostIP + "/" + dirName;                 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                 ftp.Method = WebRequestMethods.Ftp.MakeDirectory;

                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                 response.Close();             }             catch (Exception ex)             {                 MessageBox.Show(ex.Message);             }         }

 

 

/// <summary>         /// 删除目录         /// </summary>         /// <param name="dirName">创建的目录名称</param>         /// <param name="ftpHostIP">ftp地址</param>         /// <param name="username">用户名</param>         /// <param name="password">密码</param>         public void delDir(string dirName, string ftpHostIP, string username, string password)         {             try             {                 string uri = "ftp://" + ftpHostIP + "/" + dirName;                 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                 ftp.Method = WebRequestMethods.Ftp.RemoveDirectory;                 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                 response.Close();             }             catch (Exception ex)             {

                MessageBox.Show(ex.Message);             }         }

 

/// <summary>         /// 文件重命名         /// </summary>         /// <param name="currentFilename">当前目录名称</param>         /// <param name="newFilename">重命名目录名称</param>         /// <param name="ftpServerIP">ftp地址</param>         /// <param name="username">用户名</param>         /// <param name="password">密码</param>         public void Rename(string currentFilename, string newFilename, string ftpServerIP, string username, string password)         {             try             {

                FileInfo fileInf = new FileInfo(currentFilename);                 string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;                 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                 ftp.Method = WebRequestMethods.Ftp.Rename;

                ftp.RenameTo = newFilename;                 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();

                response.Close();             }             catch (Exception ex)             {                 MessageBox.Show(ex.Message);             }         }

 

 

private static FtpWebRequest GetRequest(string URI, string username, string password)         {             //根据服务器信息FtpWebRequest创建类的对象             FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI);             //提供身份验证信息             result.Credentials = new System.Net.NetworkCredential(username, password);             //设置请求完成之后是否保持到FTP服务器的控制连接，默认值为true             result.KeepAlive = false;             return result;         }

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using System.Net;

/// <summary>         /// 向Ftp服务器上传文件并创建和本地相同的目录结构         /// 遍历目录和子目录的文件         /// </summary>         /// <param name="file"></param>         private void GetFileSystemInfos(FileSystemInfo file)         {             string getDirecName=file.Name;             if (!ftpIsExistsFile(getDirecName, "192.168.0.172", "Anonymous", "") && file.Name.Equals(FileName))             {                 MakeDir(getDirecName, "192.168.0.172", "Anonymous", "");             }             if (!file.Exists) return;             DirectoryInfo dire = file as DirectoryInfo;             if (dire == null) return;             FileSystemInfo[] files = dire.GetFileSystemInfos();

            for (int i = 0; i < files.Length; i++)             {                 FileInfo fi = files[i] as FileInfo;                 if (fi != null)                 {                     DirectoryInfo DirecObj=fi.Directory;                     string DireObjName = DirecObj.Name;                     if (FileName.Equals(DireObjName))                     {                         UploadFile(fi, DireObjName, "192.168.0.172", "Anonymous", "");                     }                     else                     {                         Match m = Regex.Match(files[i].FullName, FileName + "+.*" + DireObjName);                         //UploadFile(fi, FileName+"/"+DireObjName, "192.168.0.172", "Anonymous", "");                         UploadFile(fi, m.ToString(), "192.168.0.172", "Anonymous", "");                     }                 }                 else                 {                     string[] ArrayStr = files[i].FullName.Split('\\');                     string finame=files[i].Name;                     Match m=Regex.Match(files[i].FullName,FileName+"+.*"+finame);                     //MakeDir(ArrayStr[ArrayStr.Length - 2].ToString() + "/" + finame, "192.168.0.172", "Anonymous", "");                     MakeDir(m.ToString(), "192.168.0.172", "Anonymous", "");                     GetFileSystemInfos(files[i]);                 }             }         }

/// <summary>         /// 判断ftp服务器上该目录是否存在         /// </summary>         /// <param name="dirName"></param>         /// <param name="ftpHostIP"></param>         /// <param name="username"></param>         /// <param name="password"></param>         /// <returns></returns>         private bool ftpIsExistsFile(string dirName, string ftpHostIP, string username, string password)         {             bool flag = true;             try             {                 string uri = "ftp://" + ftpHostIP + "/" + dirName;                 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                 ftp.Method = WebRequestMethods.Ftp.ListDirectory;

                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                 response.Close();             }             catch (Exception )             {                 flag = false;             }             return flag;         }