using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; public class FTPHelper { /// <summary> /// FTP请求对象 /// </summary> FtpWebRequest request = null; /// <summary> /// FTP响应对象 /// </summary> FtpWebResponse response = null; /// <summary> /// FTP服务器地址 /// </summary> public string ftpURI { get; private set; } /// <summary> /// FTP服务器IP /// </summary> public string ftpServerIP { get; private set; } /// <summary> /// FTP服务器默认目录 /// </summary> public string ftpRemotePath { get; private set; } /// <summary> /// FTP服务器登录用户名 /// </summary> public string ftpUserID { get; private set; } /// <summary> /// FTP服务器登录密码 /// </summary> public string ftpPassword { get; private set; } /// <summary> /// 初始化 /// </summary> /// <param name="FtpServerIP">FTP连接地址</param> /// <param name="FtpRemotePath">指定FTP连接成功后的当前目录, 如果不指定即默认为根目录</param> /// <param name="FtpUserID">用户名</param> /// <param name="FtpPassword">密码</param> public FTPHelper(string ftpServerIP, string ftpRemotePath, string ftpUserID, string ftpPassword) { this.ftpServerIP = ftpServerIP; this.ftpRemotePath = ftpRemotePath; this.ftpUserID = ftpUserID; this.ftpPassword = ftpPassword; this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/"; } ~FTPHelper() { if (response != null) { response.Close(); response = null; } if (request != null) { request.Abort(); request = null; } } /// <summary> /// 建立FTP链接,返回响应对象 /// </summary> /// <param name="uri">FTP地址</param> /// <param name="ftpMethod">操作命令</param> /// <returns></returns> private FtpWebResponse Open(Uri uri, string ftpMethod) { request = (FtpWebRequest)FtpWebRequest.Create(uri); request.Method = ftpMethod; request.UseBinary = true; request.KeepAlive = false; request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword); return (FtpWebResponse)request.GetResponse(); } /// <summary> /// 建立FTP链接,返回请求对象 /// </summary> /// <param name="uri">FTP地址</param> /// <param name="ftpMethod">操作命令</param> private FtpWebRequest OpenRequest(Uri uri, string ftpMethod) { request = (FtpWebRequest)WebRequest.Create(uri); request.Method = ftpMethod; request.UseBinary = true; request.KeepAlive = false; request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword); return request; } /// <summary> /// 创建目录 /// </summary> /// <param name="remoteDirectoryName">目录名</param> public void CreateDirectory(string remoteDirectoryName) { response = Open(new Uri(ftpURI + remoteDirectoryName), WebRequestMethods.Ftp.MakeDirectory); } /// <summary> /// 更改目录或文件名 /// </summary> /// <param name="currentName">当前名称</param> /// <param name="newName">修改后新名称</param> public void ReName(string currentName, string newName) { request = OpenRequest(new Uri(ftpURI + currentName), WebRequestMethods.Ftp.Rename); request.RenameTo = newName; response = (FtpWebResponse)request.GetResponse(); } /// <summary> /// 切换当前目录 /// </summary> /// <param name="IsRoot">true:绝对路径 false:相对路径</param> public void GotoDirectory(string DirectoryName, bool IsRoot) { if (IsRoot) ftpRemotePath = DirectoryName; else ftpRemotePath += "/" + DirectoryName; ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/"; } /// <summary> /// 删除目录(包括下面所有子目录和子文件) /// </summary> /// <param name="remoteDirectoryName">要删除的带路径目录名：如web/test</param> /* * 例：删除test目录 FTPHelper helper = new FTPHelper("x.x.x.x", "web", "user", "password"); helper.RemoveDirectory("web/test"); */ public void RemoveDirectory(string remoteDirectoryName) { GotoDirectory(remoteDirectoryName, true); var listAll = ListFilesAndDirectories(); foreach (var m in listAll) { if (m.IsDirectory) RemoveDirectory(m.Path); else DeleteFile(m.Name); } GotoDirectory(remoteDirectoryName, true); response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.RemoveDirectory); } /// <summary> /// 文件上传 /// </summary> /// <param name="localFilePath">本地文件路径</param> public void Upload(string localFilePath) { FileInfo fileInf = new FileInfo(localFilePath); request = OpenRequest(new Uri(ftpURI + fileInf.Name), WebRequestMethods.Ftp.UploadFile); request.ContentLength = fileInf.Length; int buffLength = 2048; byte[] buff = new byte[buffLength]; int contentLen; using (var fs = fileInf.OpenRead()) { using (var strm = request.GetRequestStream()) { contentLen = fs.Read(buff, 0, buffLength); while (contentLen != 0) { strm.Write(buff, 0, contentLen); contentLen = fs.Read(buff, 0, buffLength); } } } } /// <summary> /// 删除文件 /// </summary> /// <param name="remoteFileName">要删除的文件名</param> public void DeleteFile(string remoteFileName) { response = Open(new Uri(ftpURI + remoteFileName), WebRequestMethods.Ftp.DeleteFile); } /// <summary> /// 获取当前目录的文件和一级子目录信息 /// </summary> /// <returns></returns> public List<FileStruct> ListFilesAndDirectories() { var fileList = new List<FileStruct>(); response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.ListDirectoryDetails); using (var stream = response.GetResponseStream()) { using (var sr = new StreamReader(stream)) { string line = null; while ((line = sr.ReadLine()) != null) { //line的格式如下： //08-18-13 11:05PM <DIR> aspnet_client //09-22-13 11:39PM 2946 Default.aspx DateTime dtDate = DateTime.ParseExact(line.Substring(0, 8), "MM-dd-yy", null); DateTime dtDateTime = DateTime.Parse(dtDate.ToString("yyyy-MM-dd") + line.Substring(8, 9)); string[] arrs = line.Split(' '); var model = new FileStruct() { IsDirectory = line.IndexOf("<DIR>") > 0 ? true : false, CreateTime = dtDateTime, Name = arrs[arrs.Length - 1], Path = ftpRemotePath + "/" + arrs[arrs.Length - 1] }; fileList.Add(model); } } } return fileList; } /// <summary> /// 列出当前目录的所有文件 /// </summary> public List<FileStruct> ListFiles() { var listAll = ListFilesAndDirectories(); var listFile = listAll.Where(m => m.IsDirectory == false).ToList(); return listFile; } /// <summary> /// 列出当前目录的所有一级子目录 /// </summary> public List<FileStruct> ListDirectories() { var listAll = ListFilesAndDirectories(); var listFile = listAll.Where(m => m.IsDirectory == true).ToList(); return listFile; } /// <summary> /// 判断当前目录下指定的子目录或文件是否存在 /// </summary> /// <param name="remoteName">指定的目录或文件名</param> public bool IsExist(string remoteName) { var list = ListFilesAndDirectories(); if (list.Count(m => m.Name == remoteName) > 0) return true; return false; } /// <summary> /// 判断当前目录下指定的一级子目录是否存在 /// </summary> /// <param name="RemoteDirectoryName">指定的目录名</param> public bool IsDirectoryExist(string remoteDirectoryName) { var listDir = ListDirectories(); if (listDir.Count(m => m.Name == remoteDirectoryName) > 0) return true; return false; } /// <summary> /// 判断当前目录下指定的子文件是否存在 /// </summary> /// <param name="RemoteFileName">远程文件名</param> public bool IsFileExist(string remoteFileName) { var listFile = ListFiles(); if (listFile.Count(m => m.Name == remoteFileName) > 0) return true; return false; } /// <summary> /// 下载 /// </summary> /// <param name="saveFilePath">下载后的保存路径</param> /// <param name="downloadFileName">要下载的文件名</param> public void Download(string saveFilePath, string downloadFileName) { using (FileStream outputStream = new FileStream(saveFilePath + "\" + downloadFileName, FileMode.Create)) { response = Open(new Uri(ftpURI + downloadFileName), WebRequestMethods.Ftp.DownloadFile); using (Stream ftpStream = response.GetResponseStream()) { long cl = response.ContentLength; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { outputStream.Write(buffer, 0, readCount); readCount = ftpStream.Read(buffer, 0, bufferSize); } } } } } public class FileStruct { /// <summary> /// 是否为目录 /// </summary> public bool IsDirectory { get; set; } /// <summary> /// 创建时间 /// </summary> public DateTime CreateTime { get; set; } /// <summary> /// 文件或目录名称 /// </summary> public string Name { get; set; } /// <summary> /// 路径 /// </summary> public string Path { get; set; } }