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【转】C# FTP上传文件至服务器代码

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转自：http://www.cnblogs.com/wuhuisheng/archive/2012/08/14/2638020.html

C# FTP上传文件至服务器代码

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        /// <summary>        /// 上传文件        /// </summary>        /// <param name="fileinfo">需要上传的文件</param>        /// <param name="targetDir">目标路径</param>        /// <param name="hostname">ftp地址</param>        /// <param name="username">ftp用户名</param>        /// <param name="password">ftp密码</param>        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;            //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);                            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)            {                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         }
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 /// <summary>        /// 下载文件        /// </summary>        /// <param name="localDir">下载至本地路径</param>        /// <param name="FtpDir">ftp目标文件路径</param>        /// <param name="FtpFile">从ftp要下载的文件名</param>        /// <param name="hostname">ftp地址即IP</param>        /// <param name="username">ftp用户名</param>        /// <param name="password">ftp密码</param>        public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password)        {            string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile;            string tmpname = Guid.NewGuid().ToString();            string localfile = localDir + @"\" + tmpname;            System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);            ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile;            ftp.UseBinary = true;            ftp.UsePassive = false;            using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())            {                using (Stream responseStream = response.GetResponseStream())                {                    //loop to read & write to file                    using (FileStream fs = new FileStream(localfile, FileMode.CreateNew))                    {                        try                        {                            byte[] buffer = new byte[2048];                            int read = 0;                            do                            {                                read = responseStream.Read(buffer, 0, buffer.Length);                                fs.Write(buffer, 0, read);                            } while (!(read == 0));                            responseStream.Close();                            fs.Flush();                            fs.Close();                        }                        catch (Exception)                        {                            //catch error and delete file only partially downloaded                            fs.Close();                            //delete target file as it's incomplete                            File.Delete(localfile);                            throw;                        }                    }                    responseStream.Close();                }                response.Close();            }            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;        }        /// <summary>        /// 搜索远程文件        /// </summary>        /// <param name="targetDir"></param>        /// <param name="hostname"></param>        /// <param name="username"></param>        /// <param name="password"></param>        /// <param name="SearchPattern"></param>        /// <returns></returns>        public static List<string> ListDirectory(string targetDir, string hostname, string username, string password, string SearchPattern)        {            List<string> result = new List<string>();            try            {                string URI = "FTP://" + hostname + "/" + targetDir + "/" + SearchPattern;                System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);                ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectory;                ftp.UsePassive = true;                ftp.UseBinary = true;                string str = GetStringResponse(ftp);                str = str.Replace("\r\n", "\r").TrimEnd('\r');                str = str.Replace("\n", "\r");                if (str != string.Empty)                    result.AddRange(str.Split('\r'));                return result;            }            catch { }            return null;        }        private static string GetStringResponse(FtpWebRequest ftp)        {            //Get the result, streaming to a string            string result = "";            using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse())            {                long size = response.ContentLength;                using (Stream datastream = response.GetResponseStream())                {                    using (StreamReader sr = new StreamReader(datastream, System.Text.Encoding.Default))                    {                        result = sr.ReadToEnd();                        sr.Close();                    }                    datastream.Close();                }                response.Close();            }            return result;        }
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 /// 在ftp服务器上创建目录        /// </summary>        /// <param name="dirName">创建的目录名称</param>        /// <param name="ftpHostIP">ftp地址</param>        /// <param name="username">用户名</param>        /// <param name="password">密码</param>        public void MakeDir(string dirName,string ftpHostIP,string username,string password)        {            try            {                string uri = "ftp://" + ftpHostIP + "/" + dirName;                System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                ftp.Method = WebRequestMethods.Ftp.MakeDirectory;                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }
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/// <summary>        /// 删除目录        /// </summary>        /// <param name="dirName">创建的目录名称</param>        /// <param name="ftpHostIP">ftp地址</param>        /// <param name="username">用户名</param>        /// <param name="password">密码</param>        public void delDir(string dirName, string ftpHostIP, string username, string password)        {            try            {                string uri = "ftp://" + ftpHostIP + "/" + dirName;                System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                ftp.Method = WebRequestMethods.Ftp.RemoveDirectory;                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }
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/// <summary>        /// 文件重命名        /// </summary>        /// <param name="currentFilename">当前目录名称</param>        /// <param name="newFilename">重命名目录名称</param>        /// <param name="ftpServerIP">ftp地址</param>        /// <param name="username">用户名</param>        /// <param name="password">密码</param>        public void Rename(string currentFilename, string newFilename, string ftpServerIP, string username, string password)        {            try            {                FileInfo fileInf = new FileInfo(currentFilename);                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;                System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                ftp.Method = WebRequestMethods.Ftp.Rename;                ftp.RenameTo = newFilename;                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }
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 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;        }using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;using System.Net;
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/// <summary>        /// 向Ftp服务器上传文件并创建和本地相同的目录结构        /// 遍历目录和子目录的文件        /// </summary>        /// <param name="file"></param>        private void GetFileSystemInfos(FileSystemInfo file)        {            string getDirecName=file.Name;            if (!ftpIsExistsFile(getDirecName, "192.168.0.172", "Anonymous", "") && file.Name.Equals(FileName))            {                MakeDir(getDirecName, "192.168.0.172", "Anonymous", "");            }            if (!file.Exists) return;            DirectoryInfo dire = file as DirectoryInfo;            if (dire == null) return;            FileSystemInfo[] files = dire.GetFileSystemInfos();            for (int i = 0; i < files.Length; i++)            {                FileInfo fi = files[i] as FileInfo;                if (fi != null)                {                    DirectoryInfo DirecObj=fi.Directory;                    string DireObjName = DirecObj.Name;                    if (FileName.Equals(DireObjName))                    {                        UploadFile(fi, DireObjName, "192.168.0.172", "Anonymous", "");                    }                    else                    {                        Match m = Regex.Match(files[i].FullName, FileName + "+.*" + DireObjName);                        //UploadFile(fi, FileName+"/"+DireObjName, "192.168.0.172", "Anonymous", "");                        UploadFile(fi, m.ToString(), "192.168.0.172", "Anonymous", "");                    }                }                else                {                    string[] ArrayStr = files[i].FullName.Split('\\');                    string finame=files[i].Name;                    Match m=Regex.Match(files[i].FullName,FileName+"+.*"+finame);                    //MakeDir(ArrayStr[ArrayStr.Length - 2].ToString() + "/" + finame, "192.168.0.172", "Anonymous", "");                    MakeDir(m.ToString(), "192.168.0.172", "Anonymous", "");                    GetFileSystemInfos(files[i]);                }            }        }
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/// <summary>        /// 判断ftp服务器上该目录是否存在        /// </summary>        /// <param name="dirName"></param>        /// <param name="ftpHostIP"></param>        /// <param name="username"></param>        /// <param name="password"></param>        /// <returns></returns>        private bool ftpIsExistsFile(string dirName, string ftpHostIP, string username, string password)        {            bool flag = true;            try            {                string uri = "ftp://" + ftpHostIP + "/" + dirName;                System.Net.FtpWebRequest ftp = GetRequest(uri, username, password);                ftp.Method = WebRequestMethods.Ftp.ListDirectory;                FtpWebResponse response = (FtpWebResponse)ftp.GetResponse();                response.Close();            }            catch (Exception )            {                flag = false;            }            return flag;        }
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