C#ftp上传下载

能够直接用的类

using System;using System.Collections.Generic;using System.Text;using System.IO;using System.Net;using System.Windows.Forms;using System.Globalization;namespace FTP{  public  class FtpWeb    {         string ftpServerIP;        string ftpRemotePath;        string ftpUserID;        string ftpPassword;        string ftpURI;        /// <summary>        /// 连接FTP        /// </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 FtpWeb(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)        {            ftpServerIP = FtpServerIP;            ftpRemotePath = FtpRemotePath;            ftpUserID = FtpUserID;            ftpPassword = FtpPassword;            ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";        }        /// <summary>        /// 上传        /// </summary>        /// <param name="filename"></param>        public void Upload(string filename)        {            FileInfo fileInf = new FileInfo(filename);            string uri = ftpURI + fileInf.Name;            FtpWebRequest reqFTP;            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);            reqFTP.KeepAlive = false;            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;            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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "Upload Error --> " + ex.Message);            }        }        /// <summary>        /// 下载        /// </summary>        /// <param name="filePath"></param>        /// <param name="fileName"></param>        public void Download(string filePath, string fileName)        {            FtpWebRequest reqFTP;            FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);            try            {                //FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                Stream ftpStream = response.GetResponseStream();                long cl = response.ContentLength;                int bufferSize = 12048;                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)            {            //    Insert_Standard_ErrorLog.Insert("FtpWeb", "Download Error --> " + ex.Message);                outputStream.Close();            }        }        /// <summary>        /// 删除文件        /// </summary>        /// <param name="fileName"></param>        public void Delete(string fileName)        {            try            {                string uri = ftpURI + fileName;                FtpWebRequest reqFTP;                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                reqFTP.KeepAlive = false;                reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;                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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "Delete Error --> " + ex.Message + "  文件名:" + fileName);            }        }        /// <summary>        /// 删除文件夹        /// </summary>        /// <param name="folderName"></param>        public void RemoveDirectory(string folderName)        {            try            {                string uri = ftpURI + folderName;                FtpWebRequest reqFTP;                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                reqFTP.KeepAlive = false;                reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;                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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "Delete Error --> " + ex.Message + "  文件名:" + folderName);            }        }        /// <summary>        /// 获取当前目录下明细(包含文件和文件夹)        /// </summary>        /// <returns></returns>        public string[] GetFilesDetailList()        {            string[] downloadFiles;            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(), Encoding.Default);                //while (reader.Read() > 0)                //{                //}                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)            {                downloadFiles = null;                Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFilesDetailList Error --> " + ex.Message);                return downloadFiles;            }        }        /// <summary>        /// 获取当前目录下文件列表(仅文件)        /// </summary>        /// <returns></returns>        public string[] GetFileList(string mask)        {            string[] downloadFiles;            StringBuilder result = new StringBuilder();            FtpWebRequest reqFTP;            try            {                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));                reqFTP.UseBinary = true;                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;                WebResponse response = reqFTP.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);                string line = reader.ReadLine();                while (line != null)                {                    if (mask.Trim() != string.Empty && mask.Trim() != "*.*")                    {                        string mask_ = mask.Substring(0, mask.IndexOf("*"));                        if (line.Substring(0, mask_.Length) == mask_)                        {                            result.Append(line);                            result.Append("\n");                        }                    }                    else                    {                        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)            {                downloadFiles = null;                if (ex.Message.Trim() != "远程服务器返回错误: (550) 文件不可用(例如，未找到文件，无法访问文件)。")                {                    Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileList Error --> " + ex.Message.ToString());                }                return downloadFiles;            }        }        /// <summary>        /// 获取当前目录下所有的文件夹列表(仅文件夹)        /// </summary>        /// <returns></returns>        public string[] GetDirectoryList()        {            string[] drectory = GetFilesDetailList();            string m = string.Empty;            foreach (string str in drectory)            {                int dirPos = str.IndexOf("<DIR>");                if (dirPos>0)                {                    /*判断 Windows 风格*/                    m += str.Substring(dirPos + 5).Trim() + "\n";                }                else if (str.Trim().Substring(0, 1).ToUpper() == "D")                {                    /*判断 Unix 风格*/                    string dir = str.Substring(54).Trim();                    if (dir != "." && dir != "..")                    {                        m += dir + "\n";                     }                }            }            char[] n = new char[] { '\n' };            return m.Split(n);        }        /// <summary>        /// 判断当前目录下指定的子目录是否存在        /// </summary>        /// <param name="RemoteDirectoryName">指定的目录名</param>        public bool DirectoryExist(string RemoteDirectoryName)        {            string[] dirList = GetDirectoryList();            foreach (string str in dirList)            {                if (str.Trim() == RemoteDirectoryName.Trim())                {                    return true;                }            }            return false;        }        /// <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>        /// <param name="dirName"></param>        public void MakeDir(string dirName)        {            FtpWebRequest reqFTP;            try            {                // dirName = name of the directory to create.                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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "MakeDir Error --> " + ex.Message);            }        }        /// <summary>        /// 获取指定文件大小        /// </summary>        /// <param name="filename"></param>        /// <returns></returns>        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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileSize Error --> " + ex.Message);            }            return fileSize;        }        /// <summary>        /// 改名        /// </summary>        /// <param name="currentFilename"></param>        /// <param name="newFilename"></param>        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)            {                Insert_Standard_ErrorLog.Insert("FtpWeb", "ReName Error --> " + ex.Message);            }        }        /// <summary>        /// 移动文件        /// </summary>        /// <param name="currentFilename"></param>        /// <param name="newFilename"></param>        public void MovieFile(string currentFilename, string newDirectory)        {            ReName(currentFilename, newDirectory);        }        /// <summary>        /// 切换当前目录        /// </summary>        /// <param name="DirectoryName"></param>        /// <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>        /// 删除订单目录        /// </summary>        /// <param name="ftpServerIP">FTP 主机地址</param>        /// <param name="folderToDelete">FTP 用户名</param>        /// <param name="ftpUserID">FTP 用户名</param>        /// <param name="ftpPassword">FTP 密码</param>        public static void DeleteOrderDirectory(string ftpServerIP, string folderToDelete, string ftpUserID, string ftpPassword)        {            try{                if (!string.IsNullOrEmpty(ftpServerIP) && !string.IsNullOrEmpty(folderToDelete) && !string.IsNullOrEmpty(ftpUserID) && !string.IsNullOrEmpty(ftpPassword))                {                    FtpWeb fw = new FtpWeb(ftpServerIP, folderToDelete, ftpUserID, ftpPassword);                    //进入订单目录                    fw.GotoDirectory(folderToDelete, true);                    //获取规格目录                    string[] folders = fw.GetDirectoryList();                    foreach (string folder in folders)                    {                         if (!string.IsNullOrEmpty(folder) || folder != "")                        {                            //进入订单目录                            string subFolder = folderToDelete + "/" + folder;                            fw.GotoDirectory(subFolder, true);                            //获取文件列表                            string[] files = fw.GetFileList("*.*");                            if (files != null)                            {                                //删除文件                                foreach (string file in files)                                {                                    fw.Delete(file);                                }                            }                            //删除冲印规格文件夹                            fw.GotoDirectory(folderToDelete, true);                            fw.RemoveDirectory(folder);                        }                    }                    //删除订单文件夹                    string parentFolder = folderToDelete.Remove(folderToDelete.LastIndexOf('/'));                    string orderFolder = folderToDelete.Substring(folderToDelete.LastIndexOf('/') + 1);                    fw.GotoDirectory(parentFolder, true);                    fw.RemoveDirectory(orderFolder);                }                else                {                    throw new Exception("FTP 及路径不能为空！");                }            }            catch(Exception ex)            {                throw new Exception("删除订单时发生错误，错误信息为：" + ex.Message);            }        }    }    public class Insert_Standard_ErrorLog    {        public static void Insert(string x, string y)        {        }    }    }

使用方法

FtpWeb ftp = new FtpWeb("192.168.1.155:8934", "", "ftp账号", "ftp密码");ftp.Download(file, "要下载文件名称");