FTP操作（FTPClient）

//FTP開源封裝的類

using System;

using System.Collections.Generic;

using System.Net;

using System.IO;

namespace FTP

{

    /// <summary>

    /// FTP用戶端操作類

    /// </summary>

    public class FtpClient

    {

        #region 構造函數

        /// <summary>

        /// 建立FTP工具

        /// <para>

        /// 預設不使用SSL,使用二進制傳輸方式,使用被動模式

        /// </para>

        /// </summary>

        /// <param name="host">主機名稱</param>

        /// <param name="userId">使用者名</param>

        /// <param name="password">密碼</param>

        public FtpClient(string host, string userId, string password)

            : this(host, userId, password, 21, null, false, true, true)

        {

        }

        /// <param name="port">端口</param>

        /// <param name="enableSsl">允許Ssl</param>

        /// <param name="proxy">代理</param>

        /// <param name="useBinary">允許二進制</param>

        /// <param name="usePassive">允許被動模式</param>

        public FtpClient(string host, string userId, string password, int port, IWebProxy proxy, bool enableSsl, bool useBinary, bool usePassive)

            this.userId = userId;

            this.password = password;

            if (host.ToLower().StartsWith("ftp://"))

            {

                this.host = host;

            }

            else

                this.host = "ftp://" + host;

            this.port = port;

            this.proxy = proxy;

            this.enableSsl = enableSsl;

            this.useBinary = useBinary;

            this.usePassive = usePassive;

        #endregion

        #region 主機

        private string host = string.Empty;

        /// 主機

        public string Host

            get

                return this.host ?? string.Empty;

        #region 登入使用者名

        private string userId = string.Empty;

        /// 登入使用者名

        public string UserId

                return this.userId;

        #region 密碼

        private string password = string.Empty;

        /// 密碼

        public string Password

                return this.password;

        #region 代理

        IWebProxy proxy = null;

        /// 代理

        public IWebProxy Proxy

                return this.proxy;

            set

                this.proxy = value;

        #region 端口

        private int port = 21;

        /// 端口

        public int Port

                return port;

                this.port = value;

        #region 設定是否允許Ssl

        private bool enableSsl = false;

        /// EnableSsl 

        public bool EnableSsl

                return enableSsl;

        #region 使用被動模式

        private bool usePassive = true;

        /// 被動模式

        public bool UsePassive

                return usePassive;

                this.usePassive = value;

        #region 二進制方式

        private bool useBinary = true;

        /// 二進制方式

        public bool UseBinary

                return useBinary;

                this.useBinary = value;

        #region 遠端路徑

        private string remotePath = "/";

        /// 遠端路徑

        ///     傳回FTP伺服器上的目前路徑(可以是 / 或 /a/../ 的形式)

        public string RemotePath

                return remotePath;

                string result = "/";

                if (!string.IsNullOrEmpty(value) && value != "/")

                {

                    result = "/" + value.TrimStart('/').TrimEnd('/') + "/";

                }

                this.remotePath = result;

        #region 建立一個FTP連接配接

        /// 建立一個FTP請求

        /// <param name="url">請求位址</param>

        /// <param name="method">請求方法</param>

        /// <returns>FTP請求</returns>

        private FtpWebRequest CreateRequest(string url, string method)

            //建立連接配接

            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(url);

            request.Credentials = new NetworkCredential(this.userId, this.password);

            request.Proxy = this.proxy;

            request.KeepAlive = false;//指令執行完畢之後關閉連接配接

            request.UseBinary = useBinary;

            request.UsePassive = usePassive;

            request.EnableSsl = enableSsl;

            request.Method = method;

            return request;

        #region 上傳一個檔案到遠端路徑下

        /// 把檔案上傳到FTP伺服器的RemotePath下

        /// <param name="localFile">本地檔案資訊</param>

        /// <param name="remoteFileName">要儲存到FTP檔案伺服器上的名稱</param>

        public bool Upload(FileInfo localFile, string remoteFileName)

            bool result = false;

            if (localFile.Exists)

                string url = Host.TrimEnd('/') + RemotePath + remoteFileName;

                FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.UploadFile);

                //上傳資料

                using (Stream rs = request.GetRequestStream())

                using (FileStream fs = localFile.OpenRead())

                    byte[] buffer = new byte[4096];//4K

                    int count = fs.Read(buffer, 0, buffer.Length);

                    while (count > 0)

                    {

                        rs.Write(buffer, 0, count);

                        count = fs.Read(buffer, 0, buffer.Length);

                    }

                    fs.Close();

                    result = true;

                return result;

            throw new Exception(string.Format("本地檔案不存在,檔案路徑:{0}", localFile.FullName));

        #region 從FTP伺服器上下載下傳檔案

        /// 從目前目錄下下載下傳檔案

        /// 如果本地檔案存在,則從本地檔案結束的位置開始下載下傳.

        /// <param name="serverName">伺服器上的檔案名稱</param>

        /// <param name="localName">本地檔案名稱</param>

        /// <returns>傳回一個值,訓示是否下載下傳成功</returns>

        public bool Download(string serverName, string localName)

            using (FileStream fs = new FileStream(localName, FileMode.OpenOrCreate)) //建立或打開本地檔案

                //建立連接配接

                string url = Host.TrimEnd('/') + RemotePath + serverName;

                FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.DownloadFile);

                request.ContentOffset = fs.Length;

                using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())

                    fs.Position = fs.Length;

                    int count = response.GetResponseStream().Read(buffer, 0, buffer.Length);

                        fs.Write(buffer, 0, count);

                        count = response.GetResponseStream().Read(buffer, 0, buffer.Length);

                    response.GetResponseStream().Close();

                result = true;

            return result;

        #region 重命名FTP伺服器上的檔案

        /// 檔案更名

        /// <param name="oldFileName">原檔案名</param>

        /// <param name="newFileName">新檔案名</param>

        /// <returns>傳回一個值,訓示更名是否成功</returns>

        public bool Rename(string oldFileName, string newFileName)

            string url = Host.TrimEnd('/') + RemotePath + oldFileName;

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.Rename);

            request.RenameTo = newFileName;

            using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())

        #region 從目前目錄下擷取檔案清單

        /// 擷取目前目錄下檔案清單

        /// <returns></returns>

        public List<string> GetFileList()

            List<string> result = new List<string>();

            string url = Host.TrimEnd('/') + RemotePath;

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.ListDirectory);

                StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文檔案名

                string line = reader.ReadLine();

                while (line != null)

                    result.Add(line);

                    line = reader.ReadLine();

        #region 從FTP伺服器上擷取檔案和檔案夾清單

        /// 擷取詳細清單

        public List<string> GetFileDetails()

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.ListDirectoryDetails);

        #region 從FTP伺服器上删除檔案

        /// 删除FTP伺服器上的檔案

        /// <param name="fileName">檔案名稱</param>

        /// <returns>傳回一個值,訓示是否删除成功</returns>

        public bool DeleteFile(string fileName)

            string url = Host.TrimEnd('/') + RemotePath + fileName;

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.DeleteFile);

        #region 在FTP伺服器上建立目錄

        /// 在目前目錄下建立檔案夾

        /// <param name="dirName">檔案夾名稱</param>

        /// <returns>傳回一個值,訓示是否建立成功</returns>

        public bool MakeDirectory(string dirName)

            string url = Host.TrimEnd('/') + RemotePath + dirName;

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.MakeDirectory);

        #region 從FTP伺服器上删除目錄

        /// 删除檔案夾

        public bool DeleteDirectory(string dirName)

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.RemoveDirectory);

        #region 從FTP伺服器上擷取檔案大小

        /// 擷取檔案大小

        /// <param name="fileName"></param>

        public long GetFileSize(string fileName)

            long result = 0;

            FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.GetFileSize);

                result = response.ContentLength;

        #region 給FTP伺服器上的檔案追加内容

        /// 給FTP伺服器上的檔案追加内容

        /// <param name="localFile">本地檔案</param>

        /// <param name="remoteFileName">FTP伺服器上的檔案</param>

        /// <returns>傳回一個值,訓示是否追加成功</returns>

        public bool Append(FileInfo localFile, string remoteFileName)

                using (FileStream fs = new FileStream(localFile.FullName, FileMode.Open))

                    return Append(fs, remoteFileName);

        /// <param name="stream">資料流(可通過設定偏移來實作從特定位置開始上傳)</param>

        public bool Append(Stream stream, string remoteFileName)

            if (stream != null && stream.CanRead)

                FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.AppendFile);

                    //上傳資料

                    int count = stream.Read(buffer, 0, buffer.Length);

                        count = stream.Read(buffer, 0, buffer.Length);

        #region 擷取FTP伺服器上的目前路徑

        /// 擷取FTP伺服器上的目前路徑

        public string CurrentDirectory

                string result = string.Empty;

                string url = Host.TrimEnd('/') + RemotePath;

                FtpWebRequest request = CreateRequest(url, WebRequestMethods.Ftp.PrintWorkingDirectory);

                    string temp = response.StatusDescription;

                    int start = temp.IndexOf('"') + 1;

                    int end = temp.LastIndexOf('"');

                    if (end >= start)

                        result = temp.Substring(start, end - start);

        #region 檢查目前路徑上是否存在某個檔案

        /// 檢查檔案是否存在

        /// <param name="fileName">要檢查的檔案名</param>

        /// <returns>傳回一個值,訓示要檢查的檔案是否存在</returns>

        public bool CheckFileExist(string fileName)

            if (fileName != null && fileName.Trim().Length > 0)

                fileName = fileName.Trim();

                List<string> files = GetFileList();

                if (files != null && files.Count > 0)

                    foreach (string file in files)

                        if (file.ToLower() == fileName.ToLower())

                        {

                            result = true;

                            break;

                        }

    }

}

/*

FTP全狀态碼查詢詞典

1xx - 肯定的初步答複

這些狀态代碼訓示一項操作已經成功開始，但用戶端希望在繼續操作新指令前得到另一個答複。

本文轉自蓬萊仙羽51CTO部落格，原文連結：http://blog.51cto.com/dingxiaowei/1366854，如需轉載請自行聯系原作者