C#FTP帮助 类

using System;  using System.Collections.Generic;  using System.Text;  using System.IO;  using System.Net;using System.Text.RegularExpressions;namespace DotNet.Utilities{    /// <summary>    /// FTP帮助类    /// </summary>    public class FTPHelper    {        #region 字段        string ftpURI;        string ftpUserID;        string ftpServerIP;        string ftpPassword;        string ftpRemotePath;        #endregion        /// <summary>          /// 连接FTP服务器        /// </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)        {            ftpServerIP = FtpServerIP;            ftpRemotePath = FtpRemotePath;            ftpUserID = FtpUserID;            ftpPassword = FtpPassword;            ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";        }        /// <summary>          /// 上传          /// </summary>           public void Upload(string filename)        {            FileInfo fileInf = new FileInfo(filename);            FtpWebRequest reqFTP;            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileInf.Name));            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;            reqFTP.KeepAlive = false;            reqFTP.UseBinary = true;            reqFTP.ContentLength = fileInf.Length;            int buffLength = 2048;            byte[] buff = new byte[buffLength];            int contentLen;            FileStream fs = fileInf.OpenRead();            try            {                Stream strm = reqFTP.GetRequestStream();                contentLen = fs.Read(buff, 0, buffLength);                while (contentLen != 0)                {                    strm.Write(buff, 0, contentLen);                    contentLen = fs.Read(buff, 0, buffLength);                }                strm.Close();                fs.Close();            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }        }        /// <summary>          /// 下载          /// </summary>           public void Download(string filePath, string fileName)        {            try            {                FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);                FtpWebRequest reqFTP;                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;                reqFTP.UseBinary = true;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                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);                }                ftpStream.Close();                outputStream.Close();                response.Close();            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }        }        /// <summary>          /// 删除文件          /// </summary>          public void Delete(string fileName)        {            try            {                FtpWebRequest reqFTP;                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;                reqFTP.KeepAlive = false;                string result = String.Empty;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                long size = response.ContentLength;                Stream datastream = response.GetResponseStream();                StreamReader sr = new StreamReader(datastream);                result = sr.ReadToEnd();                sr.Close();                datastream.Close();                response.Close();            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }        }        /// <summary>          /// 获取当前目录下明细(包含文件和文件夹)          /// </summary>          public string[] GetFilesDetailList()        {            try            {                StringBuilder result = new StringBuilder();                FtpWebRequest ftp;                ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));                ftp.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;                WebResponse response = ftp.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream());                string line = reader.ReadLine();                line = reader.ReadLine();                line = reader.ReadLine();                while (line != null)                {                    result.Append(line);                    result.Append("\n");                    line = reader.ReadLine();                }                result.Remove(result.ToString().LastIndexOf("\n"), 1);                reader.Close();                response.Close();                return result.ToString().Split('\n');            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }        }        /// <summary>          /// 获取FTP文件列表(包括文件夹)        /// </summary>           private string[] GetAllList(string url)        {            List<string> list = new List<string>();            FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri(url));            req.Credentials = new NetworkCredential(ftpPassword, ftpPassword);            req.Method = WebRequestMethods.Ftp.ListDirectory;            req.UseBinary = true;            req.UsePassive = true;            try            {                using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())                {                    using (StreamReader sr = new StreamReader(res.GetResponseStream()))                    {                        string s;                        while ((s = sr.ReadLine()) != null)                        {                            list.Add(s);                        }                    }                }            }            catch (Exception ex)            {                throw (ex);            }            return list.ToArray();        }        /// <summary>          /// 获取当前目录下文件列表(不包括文件夹)          /// </summary>          public string[] GetFileList(string url)        {            StringBuilder result = new StringBuilder();            FtpWebRequest reqFTP;            try            {                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpPassword, ftpPassword);                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;                WebResponse response = reqFTP.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream());                string line = reader.ReadLine();                while (line != null)                {                    if (line.IndexOf("<DIR>") == -1)                    {                        result.Append(Regex.Match(line, @"[\S]+ [\S]+", RegexOptions.IgnoreCase).Value.Split(' ')[1]);                        result.Append("\n");                    }                    line = reader.ReadLine();                }                result.Remove(result.ToString().LastIndexOf('\n'), 1);                reader.Close();                response.Close();            }            catch (Exception ex)            {                throw (ex);            }            return result.ToString().Split('\n');        }        /// <summary>          /// 判断当前目录下指定的文件是否存在          /// </summary>          /// <param name="RemoteFileName">远程文件名</param>          public bool FileExist(string RemoteFileName)        {            string[] fileList = GetFileList("*.*");            foreach (string str in fileList)            {                if (str.Trim() == RemoteFileName.Trim())                {                    return true;                }            }            return false;        }        /// <summary>          /// 创建文件夹          /// </summary>           public void MakeDir(string dirName)        {            FtpWebRequest reqFTP;            try            {                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName));                reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                Stream ftpStream = response.GetResponseStream();                ftpStream.Close();                response.Close();            }            catch (Exception ex)            { }        }        /// <summary>          /// 获取指定文件大小          /// </summary>          public long GetFileSize(string filename)        {            FtpWebRequest reqFTP;            long fileSize = 0;            try            {                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + filename));                reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                Stream ftpStream = response.GetResponseStream();                fileSize = response.ContentLength;                ftpStream.Close();                response.Close();            }            catch (Exception ex)            { }            return fileSize;        }        /// <summary>          /// 更改文件名          /// </summary>         public void ReName(string currentFilename, string newFilename)        {            FtpWebRequest reqFTP;            try            {                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + currentFilename));                reqFTP.Method = WebRequestMethods.Ftp.Rename;                reqFTP.RenameTo = newFilename;                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                Stream ftpStream = response.GetResponseStream();                ftpStream.Close();                response.Close();            }            catch (Exception ex)            { }        }        /// <summary>          /// 移动文件          /// </summary>          public void MovieFile(string currentFilename, string newDirectory)        {            ReName(currentFilename, newDirectory);        }        /// <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 + "/";        }    }}