https://jingyan.baidu.com/article/f54ae2fc3521d51e92b849c7.html

注意电脑用户名称不能是FTP之前设置为FTP用户名称一直导致登录错误 如上网址可以进行FTP的电脑设置

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net;using System.IO;using System.Threading;namespace TCPFileDownUp{    class Program    {        static void Main(string[] args)        {            //暂时只做了文件上传 没有做文件夹上传即文件夹内容中所包含的所有东西上传操作            List
     
       dirs = GetDirctory("LocalUserDemo");            DownloadFile(@"F:\下载的文件", "LocalUserDemo", "DUCT.zip", @"192.168.1.43:58888/", "fuck", "1234");            Console.ReadKey();            FileInfo fileInfo = new FileInfo(@"F:\黄成\PE1110.zip");            UploadFile(fileInfo, "LocalUserDemo", @"192.168.1.43:58888/", "fuck", "1234");            Console.ReadKey();        }        /// 
      
        /// 上传文件        /// 
        /// 
      需要上传的文件        /// 
      目标路径        /// 
      ftp地址        /// 
      ftp用户名        /// 
      ftp密码        public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password)        {            //1. check target            string target;            if (targetDir.Trim() == "")            {                return;            }            target = Guid.NewGuid().ToString();  //使用临时文件名            string URI = "FTP://" + hostname + "/" + targetDir + "/" + target;            ///WebClient webcl = new WebClient();            System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);            //设置FTP命令 设置所要执行的FTP命令，            //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假设此处为显示指定路径下的文件列表            ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;            //指定文件传输的数据类型            ftp.UseBinary = true;            ftp.UsePassive = true;            //告诉ftp文件大小            ftp.ContentLength = fileinfo.Length;            //缓冲大小设置为2KB            const int BufferSize = 2048;            byte[] content = new byte[BufferSize - 1 + 1];            int dataRead;            int sumTotal = 0;            //打开一个文件流 (System.IO.FileStream) 去读上传的文件            using (FileStream fs = fileinfo.OpenRead())            {                try                {                    //把上传的文件写入流                    using (Stream rs = ftp.GetRequestStream())                    {                        do                        {                            //每次读文件流的2KB                            dataRead = fs.Read(content, 0, BufferSize);                            //进度                            sumTotal += dataRead;                            double RateOfProgress = sumTotal * 1.0 / fileinfo.Length;                            Console.WriteLine(RateOfProgress);                            rs.Write(content, 0, dataRead);                        } while (!(dataRead < BufferSize));                        rs.Close();                    }                }                catch (Exception ex) { }                finally                {                    fs.Close();                }            }            ftp = null;            //设置FTP命令            ftp = GetRequest(URI, username, password);            ftp.Method = System.Net.WebRequestMethods.Ftp.Rename; //改名            ftp.RenameTo = fileinfo.Name;            try            {                ftp.GetResponse();            }            catch (Exception ex)            {                //出问题就删除                ftp = GetRequest(URI, username, password);                ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; //删除                ftp.GetResponse();                throw ex;            }            finally            {                //fileinfo.Delete();            }            // 可以记录一个日志  "上传" + fileinfo.FullName + "上传到" + "FTP://" + hostname + "/" + targetDir + "/" + fileinfo.Name + "成功." );            ftp = null;            #region            /*****             *FtpWebResponse             * ****/            //FtpWebResponse ftpWebResponse = (FtpWebResponse)ftp.GetResponse();            #endregion        }        /// 
      
        /// 从ftp服务器上获得文件夹列表        /// 
        /// 
      服务器下的相对路径        /// 
              public static List
      
        GetDirctory(string RequedstPath)        {            List
       
         strs = new List
        
         ();            try            {                string uri = @"ftp://192.168.1.43:58888/" + RequedstPath;   //目标路径 path为服务器地址                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));                // ftp用户名和密码                reqFTP.Credentials = new NetworkCredential("fuck", "1234");                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;                WebResponse response = reqFTP.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名                string line = reader.ReadLine();                while (line != null)                {                    if (line.Contains("
         
          "))                    {                        string msg = line.Substring(line.LastIndexOf("
          
           ") + 5).Trim(); strs.Add(msg); } line = reader.ReadLine(); } reader.Close(); response.Close(); return strs; } catch (Exception ex) { Console.WriteLine("获取目录出错：" + ex.Message); } return strs; } private static FtpWebRequest GetRequest(string URI, string username, string password) { //根据服务器信息FtpWebRequest创建类的对象 FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI); //提供身份验证信息 result.Credentials = new System.Net.NetworkCredential(username, password); //设置请求完成之后是否保持到FTP服务器的控制连接，默认值为true result.KeepAlive = false; return result; } /// 
           
 /// 获取文件大小 /// 
 /// 
           ip服务器下的相对路径 /// 
           
            文件大小
            public static int GetFileSize(string file, string username, string password) { StringBuilder result = new StringBuilder(); FtpWebRequest request; try { request = (FtpWebRequest)FtpWebRequest.Create(new Uri(file)); request.UseBinary = true; request.UsePassive = false; request.KeepAlive = false; request.Credentials = new NetworkCredential(username, password);//设置用户名和密码 request.Method = WebRequestMethods.Ftp.GetFileSize; int dataLength = (int)request.GetResponse().ContentLength; return dataLength; } catch (Exception ex) { Console.WriteLine("获取文件大小出错：" + ex.Message); return -1; } } /// 
           
 /// 下载文件 /// 
 /// 
           下载至本地路径 /// 
           ftp目标文件路径 /// 
           从ftp要下载的文件名 /// 
           ftp地址即IP /// 
           ftp用户名 /// 
           ftp密码 public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password) { string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile; int FileTotal = GetFileSize(URI, username, password); string tmpname = Guid.NewGuid().ToString(); //本地路径 string localfile = localDir + @"\" + tmpname; System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile; //很重要 如果要多次访问这个地方要为false keepAlive则设成false,一个查询请求完了后就关闭 因为上面做了一个查询 查询文件大小 ftp.KeepAlive = false; ftp.UseBinary = true; ftp.UsePassive = false; int bufferCount = 40960; //long f = ftp.ContentLength; FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); using (Stream responseStream = response.GetResponseStream()) { using (FileStream fs = new FileStream(localfile, FileMode.CreateNew)) { try { byte[] buffer = new byte[bufferCount]; int read = 0; int TotalByte = 0; do { //把流写到buffer的byte数组中 read = responseStream.Read(buffer, 0, buffer.Length); //下载的进度 TotalByte += read; //下载的进度 double k = TotalByte * 1.0 / FileTotal; Console.WriteLine(k); //读 fs.Write(buffer, 0, read); } while (!(read == 0)); } catch (Exception ex) { //catch error and delete file only partially downloaded fs.Close(); //delete target file as it's incomplete File.Delete(localfile); throw ex; Console.WriteLine(ex.Message); } Console.WriteLine("over"); } } //using () //{ // using () // { // //loop to read & write to file // using () // { // } // } //} //try //{ // //File.Delete(localDir + @"\" + FtpFile); // //File.Move(localfile, localDir + @"\" + FtpFile); // //ftp = null; // //ftp = GetRequest(URI, username, password); // //ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; // //ftp.GetResponse(); //} //catch (Exception ex) //{ // File.Delete(localfile); // throw ex; //} // 记录日志 "从" + URI.ToString() + "下载到" + localDir + @"\" + FtpFile + "成功." ); //ftp = null; } }}