ftp下载目录下所有文件及文件夹内(递归)

 

 /// <summary>    /// ftp文件上传、下载操作类    /// </summary>    public class FTPHelper    {        /// <summary>        /// ftp用户名，匿名为“”        /// </summary>        private string ftpUser;        /// <summary>        /// ftp用户密码，匿名为“”        /// </summary>        private string ftpPassWord;        /// <summary>        ///通过用户名，密码连接到FTP服务器        /// </summary>        /// <param name="ftpUser">ftp用户名，匿名为“”</param>        /// <param name="ftpPassWord">ftp登陆密码，匿名为“”</param>        public FTPHelper(string ftpUser, string ftpPassWord)        {            this.ftpUser = ftpUser;            this.ftpPassWord = ftpPassWord;        }        /// <summary>        /// 匿名访问        /// </summary>        public FTPHelper()        {            this.ftpUser = "";            this.ftpPassWord = "";        }        /// <summary>        /// 上传文件到Ftp服务器        /// </summary>        /// <param name="uri">把上传的文件保存为ftp服务器文件的uri,如"ftp://192.168.1.104/capture-212.avi"</param>        /// <param name="upLoadFile">要上传的本地的文件路径，如D:\capture-2.avi</param>        public void UpLoadFile(string UpLoadUri, string upLoadFile)        {            Stream requestStream = null;            FileStream fileStream = null;            FtpWebResponse uploadResponse = null;            try            {                Uri uri = new Uri(UpLoadUri);                FtpWebRequest uploadRequest = (FtpWebRequest)WebRequest.Create(uri);                uploadRequest.Method = WebRequestMethods.Ftp.UploadFile;                uploadRequest.Credentials = new NetworkCredential(ftpUser, ftpPassWord);                requestStream = uploadRequest.GetRequestStream();                fileStream = File.Open(upLoadFile, FileMode.Open);                byte[] buffer = new byte[1024];                int bytesRead;                while (true)                {                    bytesRead = fileStream.Read(buffer, 0, buffer.Length);                    if (bytesRead == 0)                        break;                    requestStream.Write(buffer, 0, bytesRead);                }                requestStream.Close();                uploadResponse = (FtpWebResponse)uploadRequest.GetResponse();            }            catch (Exception ex)            {                throw new Exception("上传文件到ftp服务器出错，文件名：" + upLoadFile + "异常信息：" + ex.ToString());            }            finally            {                if (uploadResponse != null)                    uploadResponse.Close();                if (fileStream != null)                    fileStream.Close();                if (requestStream != null)                    requestStream.Close();            }        }        /// <summary>        /// 从ftp下载文件到本地服务器        /// </summary>        /// <param name="downloadUrl">要下载的ftp文件路径，如ftp://192.168.1.104/capture-2.avi</param>        /// <param name="saveFileUrl">本地保存文件的路径，如(@"d:\capture-22.avi"</param>        public void DownLoadFile(string downloadUrl, string saveFileUrl)        {            Stream responseStream = null;            FileStream fileStream = null;            StreamReader reader = null;            try            {                // string downloadUrl = "ftp://192.168.1.104/capture-2.avi";                FtpWebRequest downloadRequest = (FtpWebRequest)WebRequest.Create(downloadUrl);                downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile;                //string ftpUser = "yoyo";                //string ftpPassWord = "123456";                downloadRequest.Credentials = new NetworkCredential(ftpUser, ftpPassWord);                FtpWebResponse downloadResponse = (FtpWebResponse)downloadRequest.GetResponse();                responseStream = downloadResponse.GetResponseStream();                fileStream = File.Create(saveFileUrl);                byte[] buffer = new byte[1024];                int bytesRead;                while (true)                {                    bytesRead = responseStream.Read(buffer, 0, buffer.Length);                    if (bytesRead == 0)                        break;                    fileStream.Write(buffer, 0, bytesRead);                }            }            catch (Exception ex)            {                throw new Exception("从ftp服务器下载文件出错，文件名：" + downloadUrl + "异常信息：" + ex.ToString());            }            finally            {                if (reader != null)                {                    reader.Close();                }                if (responseStream != null)                {                    responseStream.Close();                }                if (fileStream != null)                {                    fileStream.Close();                }            }        }        /// <summary>        /// 从FTP下载文件到本地服务器,支持断点下载        /// </summary>        /// <param name="ftpUri">ftp文件路径，如"ftp://localhost/test.txt"</param>        /// <param name="saveFile">保存文件的路径，如C:\\test.txt</param>        public void BreakPointDownLoadFile(string ftpUri, string saveFile)        {            System.IO.FileStream fs = null;            System.Net.FtpWebResponse ftpRes = null;            System.IO.Stream resStrm = null;            try            {                //下载文件的URI                Uri u = new Uri(ftpUri);                //设定下载文件的保存路径                string downFile = saveFile;                //FtpWebRequest的作成                System.Net.FtpWebRequest ftpReq = (System.Net.FtpWebRequest)                    System.Net.WebRequest.Create(u);                //设定用户名和密码                ftpReq.Credentials = new System.Net.NetworkCredential(ftpUser, ftpPassWord);                //MethodにWebRequestMethods.Ftp.DownloadFile("RETR")设定                ftpReq.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;                //要求终了后关闭连接                ftpReq.KeepAlive = false;                //使用ASCII方式传送                ftpReq.UseBinary = false;                //设定PASSIVE方式无效                ftpReq.UsePassive = false;                //判断是否继续下载                //继续写入下载文件的FileStream                if (System.IO.File.Exists(downFile))                {                    //继续下载                    ftpReq.ContentOffset = (new System.IO.FileInfo(downFile)).Length;                    fs = new System.IO.FileStream(                       downFile, System.IO.FileMode.Append, System.IO.FileAccess.Write);                }                else                {                    //一般下载                    fs = new System.IO.FileStream(                        downFile, System.IO.FileMode.Create, System.IO.FileAccess.Write);                }                //取得FtpWebResponse                ftpRes = (System.Net.FtpWebResponse)ftpReq.GetResponse();                //为了下载文件取得Stream                resStrm = ftpRes.GetResponseStream();                //写入下载的数据                byte[] buffer = new byte[1024];                while (true)                {                    int readSize = resStrm.Read(buffer, 0, buffer.Length);                    if (readSize == 0)                        break;                    fs.Write(buffer, 0, readSize);                }            }            catch (Exception ex)            {                throw new Exception("从ftp服务器下载文件出错，文件名：" + ftpUri + "异常信息：" + ex.ToString());            }            finally            {                fs.Close();                resStrm.Close();                ftpRes.Close();            }        }        #region 从FTP上下载整个文件夹，包括文件夹下的文件和文件夹        /// <summary>        /// 列出FTP服务器上面当前目录的所有文件和目录        /// </summary>        /// <param name="ftpUri">FTP目录</param>        /// <returns></returns>        public List<FileStruct> ListFilesAndDirectories(string ftpUri)        {            WebResponse webresp = null;            StreamReader ftpFileListReader = null;            FtpWebRequest ftpRequest = null;            try            {                ftpRequest = (FtpWebRequest)WebRequest.Create(new Uri(ftpUri));                ftpRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;                ftpRequest.Credentials = new NetworkCredential(ftpUser, ftpPassWord);                webresp = ftpRequest.GetResponse();                ftpFileListReader = new StreamReader(webresp.GetResponseStream(), Encoding.Default);            }            catch (Exception ex)            {                throw new Exception("获取文件列表出错，错误信息如下：" + ex.ToString());            }            string Datastring = ftpFileListReader.ReadToEnd();            return GetList(Datastring);        }        /// <summary>        /// 列出FTP目录下的所有文件        /// </summary>        /// <param name="ftpUri">FTP目录</param>        /// <returns></returns>        public List<FileStruct> ListFiles(string ftpUri)        {            List<FileStruct> listAll = ListFilesAndDirectories(ftpUri);            List<FileStruct> listFile = new List<FileStruct>();            foreach (FileStruct file in listAll)            {                if (!file.IsDirectory)                {                    listFile.Add(file);                }            }            return listFile;        }        /// <summary>        /// 列出FTP目录下的所有目录        /// </summary>        /// <param name="ftpUri">FRTP目录</param>        /// <returns>目录列表</returns>        public List<FileStruct> ListDirectories(string ftpUri)        {            List<FileStruct> listAll = ListFilesAndDirectories(ftpUri);            List<FileStruct> listDirectory = new List<FileStruct>();            foreach (FileStruct file in listAll)            {                if (file.IsDirectory)                {                    listDirectory.Add(file);                }            }            return listDirectory;        }        /// <summary>        /// 获得文件和目录列表        /// </summary>        /// <param name="datastring">FTP返回的列表字符信息</param>        private List<FileStruct> GetList(string datastring)        {            List<FileStruct> myListArray = new List<FileStruct>();            string[] dataRecords = datastring.Split('\n');            FileListStyle _directoryListStyle = GuessFileListStyle(dataRecords);            foreach (string s in dataRecords)            {                if (_directoryListStyle != FileListStyle.Unknown && s != "")                {                    FileStruct f = new FileStruct();                    f.Name = "..";                    switch (_directoryListStyle)                    {                        case FileListStyle.UnixStyle:                            f = ParseFileStructFromUnixStyleRecord(s);                            break;                        case FileListStyle.WindowsStyle:                            f = ParseFileStructFromWindowsStyleRecord(s);                            break;                    }                    if (!(f.Name == "." || f.Name == ".."))                    {                        myListArray.Add(f);                    }                }            }            return myListArray;        }        /// <summary>        /// 从Unix格式中返回文件信息        /// </summary>        /// <param name="Record">文件信息</param>        private FileStruct ParseFileStructFromUnixStyleRecord(string Record)        {            FileStruct f = new FileStruct();            string processstr = Record.Trim();            f.Flags = processstr.Substring(0, 10);            f.IsDirectory = (f.Flags[0] == 'd');            processstr = (processstr.Substring(11)).Trim();            _cutSubstringFromStringWithTrim(ref processstr, ' ', 0);   //跳过一部分            f.Owner = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0);            f.Group = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0);            _cutSubstringFromStringWithTrim(ref processstr, ' ', 0);   //跳过一部分            string yearOrTime = processstr.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)[2];            if (yearOrTime.IndexOf(":") >= 0)  //time            {                processstr = processstr.Replace(yearOrTime, DateTime.Now.Year.ToString());            }            f.CreateTime = DateTime.Parse(_cutSubstringFromStringWithTrim(ref processstr, ' ', 8));            f.Name = processstr;   //最后就是名称            return f;        }        /// <summary>        /// 从Windows格式中返回文件信息        /// </summary>        /// <param name="Record">文件信息</param>        private FileStruct ParseFileStructFromWindowsStyleRecord(string Record)        {            FileStruct f = new FileStruct();            string processstr = Record.Trim();            string dateStr = processstr.Substring(0, 8);            processstr = (processstr.Substring(8, processstr.Length - 8)).Trim();            string timeStr = processstr.Substring(0, 7);            processstr = (processstr.Substring(7, processstr.Length - 7)).Trim();            DateTimeFormatInfo myDTFI = new CultureInfo("en-US", false).DateTimeFormat;            myDTFI.ShortTimePattern = "t";            f.CreateTime = DateTime.Parse(dateStr + " " + timeStr, myDTFI);            if (processstr.Substring(0, 5) == "<DIR>")            {                f.IsDirectory = true;                processstr = (processstr.Substring(5, processstr.Length - 5)).Trim();            }            else            {                string[] strs = processstr.Split(new char[] { ' ' },2);// StringSplitOptions.RemoveEmptyEntries);   // true);                processstr = strs[1];                f.IsDirectory = false;            }            f.Name = processstr;            return f;        }        /// <summary>        /// 按照一定的规则进行字符串截取        /// </summary>        /// <param name="s">截取的字符串</param>        /// <param name="c">查找的字符</param>        /// <param name="startIndex">查找的位置</param>        private string _cutSubstringFromStringWithTrim(ref string s, char c, int startIndex)        {            int pos1 = s.IndexOf(c, startIndex);            string retString = s.Substring(0, pos1);            s = (s.Substring(pos1)).Trim();            return retString;        }        /// <summary>        /// 判断文件列表的方式Window方式还是Unix方式        /// </summary>        /// <param name="recordList">文件信息列表</param>        private FileListStyle GuessFileListStyle(string[] recordList)        {            foreach (string s in recordList)            {                if (s.Length > 10                 && Regex.IsMatch(s.Substring(0, 10), "(-|d)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)"))                {                    return FileListStyle.UnixStyle;                }                else if (s.Length > 8                 && Regex.IsMatch(s.Substring(0, 8), "[0-9][0-9]-[0-9][0-9]-[0-9][0-9]"))                {                    return FileListStyle.WindowsStyle;                }            }            return FileListStyle.Unknown;        }        /// <summary>          /// 从FTP下载整个文件夹          /// </summary>          /// <param name="ftpDir">FTP文件夹路径</param>          /// <param name="saveDir">保存的本地文件夹路径</param>          public void DownFtpDir(string ftpDir, string saveDir)        {            List<FileStruct> files = ListFilesAndDirectories(ftpDir);            if (!Directory.Exists(saveDir))            {                Directory.CreateDirectory(saveDir);            }            foreach (FileStruct f in files)            {                if (f.IsDirectory) //文件夹，递归查询                {                    DownFtpDir(ftpDir + "/" + f.Name, saveDir + "\\" + f.Name);                }                else //文件，直接下载                {                    DownLoadFile(ftpDir + "/" + f.Name, saveDir + "\\" + f.Name);                }            }        }        #endregion    }    #region 文件信息结构    public struct FileStruct    {        public string Flags;        public string Owner;        public string Group;        public bool IsDirectory;        public DateTime CreateTime;        public string Name;    }    public enum FileListStyle    {        UnixStyle,        WindowsStyle,        Unknown    }    #endregion