FTP的文件管理

因为网站有下载文件需要和网站分离，使用到了FTP管理文件，这里做一个简单的整理。

和安装iis一样。全部勾选。

设置站点名称和路径。

设置ip。

身份授权选择所有用户，可以读写。

完成之后 IIS就会出现：

计算机-- 管理-- 本地用户和组。 添加用户，描述为FTP。

这里要设置用户的密码方式，去掉“用户下次登录时必须更改密码”的选项。

不然会登录不成功。报530错误。

ftp ip 就可以访问。显示230 user logged in 表示登录成功。

FtpHelper:

 html' target='_blank'>public static class FtpHelper { //基本设置 private const string Path = @ ftp://192.168.253.4:21/ //目标路径 private const string Ftpip = 192.168.253.4 // GetAppConfig( obj //ftp IP地址 private const string Username = stone //GetAppConfig( username //ftp用户名 private const string Password = 111111 //GetAppConfig( password //ftp密码 // 2M 可能不够 private const int bufferSize = 2048; /// summary  /// 获取自定义配置的值 /// /summary  /// param name= strKey 键值 /param  /// returns 键值对应的值 /returns  public static string GetAppConfig(string strKey) { foreach (string key in ConfigurationManager.AppSettings) { if (key == strKey) { return ConfigurationManager.AppSettings[strKey]; } return null; } //获取ftp上面的文件和文件夹 public static string[] GetFileList(string dir) { var result = new StringBuilder(); try { var ftpRequest = FtpRequest(Path, WebRequestMethods.Ftp.ListDirectory); WebResponse response = ftpRequest.GetResponse(); var reader = new StreamReader(response.GetResponseStream()); string line = reader.ReadLine(); while (line != null) result.Append(line); result.Append( /n  Console.WriteLine(line); line = reader.ReadLine(); } // to remove the trailing /n  result.Remove(result.ToString().LastIndexOf( /n ), 1); reader.Close(); response.Close(); return result.ToString().Split( /n  } catch (Exception ex) Console.WriteLine( 获取ftp上面的文件和文件夹： + ex.Message); return new[] {  } /// summary  /// 获取文件大小 /// /summary  /// param name= file ip服务器下的相对路径 /param  /// returns 文件大小 /returns  public static int GetFileSize(string file) { var result = new StringBuilder(); FtpWebRequest request; try request = (FtpWebRequest) WebRequest.Create(new Uri(Path + file)); request.UseBinary = true; request.Credentials = new NetworkCredential(Username, Password); //设置用户名和密码 request.Method = WebRequestMethods.Ftp.GetFileSize; var dataLength = (int) request.GetResponse().ContentLength; return dataLength; } catch (Exception ex) Console.WriteLine( 获取文件大小出错： + ex.Message); return -1; } /// summary  /// 文件上传 /// /summary  /// param name= localFile 原路径（绝对路径）包括文件名 /param  /// param name= remoteFile 目标文件夹：服务器下的相对路径 不填为根目录 /param  public static bool UpLoad(string localFile, string remoteFile = ) { try { string url = Path; if (remoteFile != ) url += remoteFile + / try { //待上传的文件 （全路径） { var fileInfo = new FileInfo(localFile); using (FileStream fs = fileInfo.OpenRead()) { long length = fs.Length; FtpWebRequest reqFtp = FtpRequest(url + fileInfo.Name,WebRequestMethods.Ftp.UploadFile); using (Stream stream = reqFtp.GetRequestStream()) { //设置缓冲大小 int BufferLength = 5120; var b = new byte[BufferLength]; int i; while ((i = fs.Read(b, 0, BufferLength)) 0) stream.Write(b, 0, i); Console.WriteLine( 上传文件成功 return true; } catch (Exception ex) Console.WriteLine( 上传文件失败错误为 + ex.Message); } finally } catch (Exception ex) Console.WriteLine( 上传文件失败错误为 + ex.Message); } finally } catch (Exception ex) Console.WriteLine( 上传文件失败错误为 + ex.Message); } return false; } public static bool UpLoad(Stream localFileStream, string remoteFile) { bool result = true; try { var ftpRequest = FtpRequest(Path + remoteFile, WebRequestMethods.Ftp.UploadFile); var ftpStream = ftpRequest.GetRequestStream(); 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) Console.WriteLine(ex.ToString()); result = false; localFileStream.Close(); ftpStream.Close(); } catch (Exception ex) Console.WriteLine(ex.ToString()); result = false; } return result; } public static FtpWebRequest FtpRequest(string requstUrl,string method,bool closedResponse=false) { var reqFtp = (FtpWebRequest) WebRequest.Create(new Uri(requstUrl)); //设置连接到FTP的帐号密码 reqFtp.Credentials = new NetworkCredential(Username, Password); //设置请求完成后是否保持连接 reqFtp.KeepAlive = false; //指定执行命令 reqFtp.Method = method; //指定数据传输类型 reqFtp.UseBinary = true; if (closedResponse) { var resp=reqFtp.GetResponse(); resp.Close(); } return reqFtp; } /// summary  /// 下载 /// /summary  /// param name= localFile 目的位置 /param  /// param name= remoteFile 服务器相对位置 /param  /// returns /returns  public static bool Download(string localFile,string remoteFile) { bool check = true; try { var outputStream = new FileStream(localFile, FileMode.Create); var ftpRequest = FtpRequest(Path + remoteFile, WebRequestMethods.Ftp.DownloadFile); var response = (FtpWebResponse)ftpRequest.GetResponse(); Stream ftpStream = response.GetResponseStream(); long cl = response.ContentLength; int bufferSize = 2048; int readCount; var buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount 0) outputStream.Write(buffer, 0, readCount);  readCount = ftpStream.Read(buffer, 0, bufferSize); ftpStream.Close(); outputStream.Close(); response.Close(); } catch (Exception err) check = false; } return check; } public static Stream Download(string remoteFile) { var ftpRequest = FtpRequest(Path + remoteFile, WebRequestMethods.Ftp.DownloadFile); var response = (FtpWebResponse)ftpRequest.GetResponse(); Stream ftpStream = response.GetResponseStream(); return ftpStream; } /// summary  /// 删除文件 /// /summary  /// param name= fileName 服务器下的相对路径 包括文件名 /param  public static void DeleteFileName(string fileName) { try FtpRequest(Path + fileName, WebRequestMethods.Ftp.DeleteFile,true); } catch (Exception ex) Console.WriteLine( 删除文件出错： + ex.Message); } /// summary  /// 新建目录 上一级必须先存在 /// /summary  /// param name= dirName 服务器下的相对路径 /param  public static void MakeDir(string dirName) { try FtpRequest(Path + dirName, WebRequestMethods.Ftp.MakeDirectory, true); } catch (Exception ex) Console.WriteLine( 创建目录出错： + ex.Message); } /// summary  /// 删除目录 上一级必须先存在 /// /summary  /// param name= dirName 服务器下的相对路径 /param  public static void DelDir(string dirName) { try FtpRequest(Path + dirName, WebRequestMethods.Ftp.RemoveDirectory,true); } catch (Exception ex) Console.WriteLine( 删除目录出错： + ex.Message); } /// summary  /// 从ftp服务器上获得文件夹列表 /// /summary  /// param name= requedstPath 服务器下的相对路径 /param  /// returns /returns  public static List string GetDirctory(string requedstPath) { var strs = new List string try { var reqFtp = FtpRequest(Path + requedstPath, WebRequestMethods.Ftp.ListDirectoryDetails); WebResponse response = reqFtp.GetResponse(); var 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( 获取目录出错： + ex.Message); } return strs; } /// summary  /// 从ftp服务器上获得文件列表 /// /summary  /// param name= requedstPath 服务器下的相对路径 /param  /// returns /returns  public static List string GetFile(string requedstPath) { var strs = new List string try { var reqFtp = FtpRequest(Path + requedstPath, WebRequestMethods.Ftp.ListDirectoryDetails); WebResponse response = reqFtp.GetResponse(); var 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( 获取文件出错： + ex.Message); } return strs; }

View Code

主要是通过创建FtpRequest来处理Ftp相关请求。

 public static FtpWebRequest FtpRequest(string requstUrl,string method,bool closedResponse=false) { var reqFtp = (FtpWebRequest) WebRequest.Create(new Uri(requstUrl)); //设置连接到FTP的帐号密码 reqFtp.Credentials = new NetworkCredential(Username, Password); //设置请求完成后是否保持连接 reqFtp.KeepAlive = false; //指定执行命令 reqFtp.Method = method; //指定数据传输类型 reqFtp.UseBinary = true; if (closedResponse) { var resp=reqFtp.GetResponse(); resp.Close(); } return reqFtp; }

因为在MVC网站中使用的文件流的方式。

下载：

 public static Stream Download(string remoteFile) { var ftpRequest = FtpRequest(Path + remoteFile, WebRequestMethods.Ftp.DownloadFile); var response = (FtpWebResponse)ftpRequest.GetResponse(); Stream ftpStream = response.GetResponseStream(); return ftpStream; }

调用：

 public ActionResult DownloadFileFromFtp() { var filepath = DIAView//simple.png var stream = FtpHelper.Download(filepath); return File(stream, FileHelper.GetContentType( .png ), test.png  }

上传：

 public static bool UpLoad(Stream localFileStream, string remoteFile) { bool result = true; try { var ftpRequest = FtpRequest(Path + remoteFile, WebRequestMethods.Ftp.UploadFile); var ftpStream = ftpRequest.GetRequestStream(); 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) Console.WriteLine(ex.ToString()); result = false; localFileStream.Close(); ftpStream.Close(); } catch (Exception ex) Console.WriteLine(ex.ToString()); result = false; } return result; }

调用：

 [HttpPost] public JsonResult UploadFile(HttpPostedFileBase fileData) { if (fileData != null) { string fileName = Path.GetFileName(fileData.FileName);// 原始文件名称 string saveName = Encrypt.GenerateOrderNumber() + _ +fileName;  FtpHelper.UpLoad(fileData.InputStream, DIAView + / + saveName); return Json(new { Success = true, FileName = fileName, SaveName = saveName}, JsonRequestBehavior.AllowGet); } return Json(new { Success = false, Message = 请选择要上传的文件！ }, JsonRequestBehavior.AllowGet); }

Ftp还可以设置不同用户有不同的目录，是以为记

相信看了本文案例你已经掌握了方法，更多精彩请关注php 其它相关文章！

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以上就是FTP的文件管理的详细内容，html教程

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