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  • C# FTP帮助类

    using System;
    using System.Collections.Generic;
    using System.IO;
    using System.Linq;
    using System.Net;
    using System.Text;
    using System.Text.RegularExpressions;
    
    namespace LCPlatform.Toolkits.Utility
    {
        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("
    ");
                        line = reader.ReadLine();
                    }
                    result.Remove(result.ToString().LastIndexOf("
    "), 1);
                    reader.Close();
                    response.Close();
                    return result.ToString().Split('
    ');
                }
                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("
    ");
                        }
                        line = reader.ReadLine();
                    }
                    result.Remove(result.ToString().LastIndexOf('
    '), 1);
                    reader.Close();
                    response.Close();
                }
                catch (Exception ex)
                {
                    throw (ex);
                }
                return result.ToString().Split('
    ');
            }
            /// <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 + "/";
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/d0975/p/13065494.html
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