• ftp上传文件


        /// 上传文件
              /// </summary>
              /// <param name="fileBytes"></param>
              /// <param name="originalName"></param>
              /// <param name="msg"></param>
              /// <returns></returns>
            protected bool UpLoad(byte[] fileBytes, string originalName, out string newFileName, out string msg)
            {
                msg = "";
                newFileName = "";
                try
                {
                    FTPUpFile ftp = new FTPUpFile();
                    newFileName = ftp.UpFile(fileBytes, originalName);
                    if (string.IsNullOrEmpty(newFileName))
                    {
                        msg = "上传文件时出错!";
                        return false;
                    }
                    return true;
                }
                catch (Exception ex)
                {
                    msg = ex.Message;
                    return false;
                }
            }
    
            /// <summary>
             /// FTP上传文件
             /// </summary>
            public class FTPUpFile
            {
                string Filetype = ConfigurationManager.AppSettings["FileType"];
                string ipaddress = ConfigurationManager.AppSettings["IPaddress"];
                string Username = ConfigurationManager.AppSettings["UserName"];
                string Password = ConfigurationManager.AppSettings["Password"];
                /// <summary>
                  /// FTP上传文件
                  /// </summary>
                  /// <param name="filename">上传文件路径</param>
                  /// <param name="ftpServerIP">FTP服务器的IP和端口</param>
                  /// <param name="ftpPath">FTP服务器下的哪个目录</param>
                  /// <param name="ftpUserID">FTP用户名</param>
                  /// <param name="ftpPassword">FTP密码</param>
                public bool Upload(string filename, string ftpServerIP, string ftpPath, string ftpUserID, string ftpPassword)
                {
                    FileInfo fileInf = new FileInfo(filename);
                    string uri = "ftp://" + ftpServerIP + "/" + ftpPath + "/" + fileInf.Name;
                    try
                    {
                        FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                        // ftp用户名和密码
                        reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
                        reqFTP.KeepAlive = false;
                        // 指定执行什么命令
                        reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
                        // 指定数据传输类型
                        reqFTP.UseBinary = true;
                        // 上传文件时通知服务器文件的大小
                        reqFTP.ContentLength = fileInf.Length;
                        //this.Invoke(InitUProgress, fileInf.Length);
                        // 缓冲大小设置为2kb
                        int buffLength = 4096;
                        byte[] buff = new byte[buffLength];
                        int contentLen;
                        // 打开一个文件流 (System.IO.FileStream) 去读上传的文件
                        FileStream fs = fileInf.OpenRead();
                        // 把上传的文件写入流
                        Stream strm = reqFTP.GetRequestStream();
                        contentLen = fs.Read(buff, 0, buffLength);
                        while (contentLen != 0)
                        {
                            strm.Write(buff, 0, contentLen);
                            contentLen = fs.Read(buff, 0, buffLength);
                        }
                        // 关闭两个流
                        strm.Close();
                        strm.Dispose();
                        fs.Close();
                        fs.Dispose();
                        return true;
                    }
                    catch (Exception ex)
                    {
                        return false;
                    }
                }
                /// <summary>
                  /// 新建目录
                  /// </summary>
                  /// <param name="ftpPath"></param>
                  /// <param name="dirName"></param>
                public void MakeDir(string ftpPath, string dirName, string username, string password)
                {
                    try
                    {
                        //实例化FTP连接
                        FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath + dirName));
                        // ftp用户名和密码
                        request.Credentials = new NetworkCredential(username, password);
                        // 默认为true,连接不会被关闭
                        request.KeepAlive = false;
                        //指定FTP操作类型为创建目录
                        request.Method = WebRequestMethods.Ftp.MakeDirectory;
                        //获取FTP服务器的响应
                        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
                        response.Close();
                    }
                    catch (Exception ex)
                    {
                        //Respons
                    }
                }
                /// <summary>
                  /// 删除指定文件
                  /// </summary>
                  /// <param name="ftpPath"></param>
                  /// <param name="dirName"></param>
                  /// <param name="username"></param>
                  /// <param name="password"></param>
                public void DeleteFile(string ftpPath, string username, string password)
                {
                    try
                    {
                        // string uri = "ftp://" + ftpServerIP + "/" + ftpPath + "/" + fileInf.Name;
                        //ftpPath = "ftp://192.168.1.111:2005/2012-12-05/20121206O5CATICE.docx";
                        //password = "111";
                        //username = "yuanluluoli";
                        //实例化FTP连接
                        FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath));
                        request.Method = WebRequestMethods.Ftp.DeleteFile;
                        // ftp用户名和密码
                        request.Credentials = new NetworkCredential(username, password);
                        // 默认为true,连接不会被关闭
                        request.KeepAlive = false;
                        //获取FTP服务器的响应
                        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
                        response.Close();
                    }
                    catch (Exception ex)
                    {
                        //Respons
                    }
                }
                /// <summary>
                  /// 检查目录是否存在
                  /// </summary>
                  /// <param name="ftpPath">要检查的目录的路径</param>
                  /// <param name="dirName">要检查的目录名</param>
                  /// <returns>存在返回true,否则false</returns>
                public bool CheckDirectoryExist(string ftpPath, string dirName, string username, string password)
                {
                    bool result = false;
                    try
                    {
                        //实例化FTP连接
                        FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath));
                        // ftp用户名和密码
                        request.Credentials = new NetworkCredential(username, password);
                        request.KeepAlive = false;
                        //指定FTP操作类型为创建目录
                        request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                        //获取FTP服务器的响应
                        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
                        StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.Default);
                        StringBuilder str = new StringBuilder();
                        string line = sr.ReadLine();
                        while (line != null)
                        {
                            str.Append(line);
                            str.Append("|");
                            line = sr.ReadLine();
                        }
                        string[] datas = str.ToString().Split('|');
                        for (int i = 0; i < datas.Length; i++)
                        {
                            if (datas[i].Contains("<DIR>"))
                            {
                                int index = datas[i].IndexOf("<DIR>");
                                string name = datas[i].Substring(index + 5).Trim();
                                if (name == dirName)
                                {
                                    result = true;
                                    break;
                                }
                            }
                        }
                        sr.Close();
                        sr.Dispose();
                        response.Close();
                    }
                    catch (Exception)
                    {
                        return false;
                    }
                    return result;
                }
                /// <summary>
                  /// 上传文件
                  /// </summary>
                  /// <param name="buffer">文件的Byte数组</param>
                  /// <param name="originalName">文件原始名字(带后缀名)</param>
                  /// <param name="perStr">新文件名的前缀</param>
                  /// <returns></returns>
                public string UpFile(byte[] buffer, string originalName, string perStr = "")
                {
                    if (buffer == null || buffer.Length <= 0 || string.IsNullOrEmpty(originalName))
                        throw new ArgumentException("参数错误!");
                    string filePathstr = string.Empty;
                    string filepathsql = null;
                    try
                    {
                        string pathstr = perStr + DateTime.Now.ToString().Replace("/", "").Replace("-", "").Replace(":", "").Replace(" ", "");
                        string rodumlist = GeneralHelper.GetMixPwd(10);//10位随机数
                        filePathstr = "~/File/" + pathstr + rodumlist + Path.GetExtension(originalName);
                        //Stream sr = upfile.PostedFile.InputStream;
                        //byte[] file = new byte[sr.Length];
                        //sr.Read(file, 0, file.Length);
                        StreamWriter sw = new StreamWriter(HttpContext.Current.Server.MapPath(filePathstr));
                        sw.BaseStream.Write(buffer, 0, buffer.Length);
                        sw.Flush(); sw.Close();
                        // file.SaveAs(HttpContext.Current.Server.MapPath(filePathstr));//把文件上传到服务器的绝对路径上
                        bool check;
                        string ftpPath = DateTime.Now.ToString("yyyy-MM-dd");
                        string uri = @"ftp://" + ipaddress + "/";
                        //检查是否存在此目录文件夹
                        if (CheckDirectoryExist(uri, ftpPath, Username, Password))
                        {
                            //存在此文件夹就直接上传
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        else
                        {
                            MakeDir(uri, ftpPath, Username, Password);//创建
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        //成功就更新
                        if (check)
                        {
                            filepathsql = ftpPath + "/" + pathstr + rodumlist + Path.GetExtension(originalName);
                        }
                        //检查是否存在此文件
                        if (File.Exists(HttpContext.Current.Server.MapPath(filePathstr)))
                        {
                            File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        }
                        return filepathsql;
                    }
                    catch (Exception ex)
                    {
                        File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        throw ex;
                    }
                }
                /// <summary>
                  /// 上传文件
                  /// 不修改名字及后缀名
                  /// </summary>
                  /// <param name="originalFilePath">上传文件的绝对路径</param>
                  /// <returns></returns>
                public string UpFile(string originalFilePath)
                {
                    if (string.IsNullOrEmpty(originalFilePath))
                        throw new ArgumentException("参数错误!");
                    string filepathsql = null;
                    try
                    {
                        //检查是否存在此文件
                        if (!File.Exists(originalFilePath))
                            throw new Exception("文件不存在!");
                        //Stream sr = upfile.PostedFile.InputStream;
                        //byte[] file = new byte[sr.Length];
                        //sr.Read(file, 0, file.Length);
                        // file.SaveAs(HttpContext.Current.Server.MapPath(filePathstr));//把文件上传到服务器的绝对路径上
                        bool check;
                        string ftpPath = DateTime.Now.ToString("yyyy-MM-dd");
                        string uri = @"ftp://" + ipaddress + "/";
                        //检查是否存在此目录文件夹
                        if (CheckDirectoryExist(uri, ftpPath, Username, Password))
                        {
                            //存在此文件夹就直接上传
                            check = Upload(originalFilePath, ipaddress, ftpPath, Username, Password);
                        }
                        else
                        {
                            MakeDir(uri, ftpPath, Username, Password);//创建
                            check = Upload(originalFilePath, ipaddress, ftpPath, Username, Password);
                        }
                        //成功就更新
                        if (check)
                        {
                            filepathsql = ftpPath + "/" + Path.GetFileName(originalFilePath);
                        }
                        //检查是否存在此文件
                        if (File.Exists(originalFilePath))
                        {
                            File.Delete(originalFilePath);
                        }
                        return filepathsql;
                    }
                    catch (Exception ex)
                    {
                        //File.Delete(originalFilePath);
                        throw ex;
                    }
                }
                public string Ftp_Up(HtmlInputFile upfile)
                {
                    //Encrypt En = new Encrypt();
                    string filePathstr = string.Empty;
                    string filepathsql = null;
                    try
                    {
                        string pathstr = DateTime.Now.ToString().Replace("/", "").Replace("-", "").Replace(":", "").Replace(" ", "");
                        string rodumlist = GeneralHelper.GetMixPwd(10);//10位随机数
                        filePathstr = "~/File/" + pathstr + rodumlist + Path.GetExtension(upfile.PostedFile.FileName);
                        Stream sr = upfile.PostedFile.InputStream;
                        byte[] file = new byte[sr.Length];
                        sr.Read(file, 0, file.Length);
                        StreamWriter sw = new StreamWriter(HttpContext.Current.Server.MapPath(filePathstr));
                        sw.BaseStream.Write(file, 0, file.Length);
                        sw.Flush(); sw.Close(); sr.Flush(); sr.Close();
                        // file.SaveAs(HttpContext.Current.Server.MapPath(filePathstr));//把文件上传到服务器的绝对路径上
                        bool check;
                        string ftpPath = DateTime.Now.ToString("yyyy-MM-dd");
                        string uri = @"ftp://" + ipaddress + "/";
                        //检查是否存在此目录文件夹
                        if (CheckDirectoryExist(uri, ftpPath, Username, Password))
                        {
                            //存在此文件夹就直接上传
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        else
                        {
                            MakeDir(uri, ftpPath, Username, Password);//创建
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        //成功就更新
                        if (check)
                        {
                            filepathsql = ftpPath + "/" + pathstr + rodumlist + Path.GetExtension(upfile.PostedFile.FileName);
                        }
                        //检查是否存在此文件
                        if (File.Exists(HttpContext.Current.Server.MapPath(filePathstr)))
                        {
                            File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        }
                        return filepathsql;
                    }
                    catch (Exception)
                    {
                        File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        return filepathsql;
                        // Response.Write("<script>alert(" + ex.Message + ");</script>");
                    }
                }
                /// <summary>
                  /// 上传
                  /// </summary>
                  /// <param name="file"></param>
                  /// <returns></returns>
                public string Ftp_Up(HttpPostedFileBase postedFile)
                {
                    string filePathstr = string.Empty;
                    string filepathsql = null;
                    try
                    {
                        string pathstr = DateTime.Now.ToString("yyyyMMddHHmmss");
                        string rodumlist = GeneralHelper.GetMixPwd(10);//10位随机数
                        string filename = System.IO.Path.GetFileName(postedFile.FileName);
                        string eExtension = Path.GetExtension(filename);
                        string strLocation = HttpContext.Current.Server.MapPath("~/File/");
                        filePathstr = strLocation + pathstr + rodumlist + eExtension;
                        postedFile.SaveAs(filePathstr);
                        bool check;
                        string ftpPath = DateTime.Now.ToString("yyyy-MM-dd");
                        string uri = @"ftp://" + ipaddress + "/";
                        //检查是否存在此目录文件夹
                        if (CheckDirectoryExist(uri, ftpPath, Username, Password))
                        {
                            //存在此文件夹就直接上传
                            check = Upload(filePathstr, ipaddress, ftpPath, Username, Password);
                        }
                        else
                        {
                            MakeDir(uri, ftpPath, Username, Password);//创建
                            check = Upload(filePathstr, ipaddress, ftpPath, Username, Password);
                        }
                        //成功就更新
                        if (check)
                        {
                            filepathsql = ftpPath + "/" + pathstr + rodumlist + eExtension;
                        }
                        //检查是否存在此文件
                        if (File.Exists(filePathstr))
                        {
                            File.Delete(filePathstr);
                        }
                        return filepathsql;
                    }
                    catch (Exception ex)
                    {
                        //检查是否存在此文件
                        if (File.Exists(filePathstr))
                        {
                            File.Delete(filePathstr);
                        }
                        return "";
                        // Response.Write("<script>alert(" + ex.Message + ");</script>");
                    }
                }
                /// <summary>
                  /// FTP下载文件在服务器目录
                  /// </summary>
                  /// <param name="pathname">本地保存目录路径和文件名称</param>
                  /// <param name="filename">FTP目录路径和文件名称</param>
                  /// <returns></returns>
                public bool FileDown(string pathname, string filename)
                {
                    string uri = "ftp://" + ipaddress + "/" + filename;
                    string FileName = pathname;//本地保存目录
                                               //创建一个文件流
                    FileStream fs = null;
                    Stream responseStream = null;
                    try
                    {
                        //创建一个与FTP服务器联系的FtpWebRequest对象
                        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri(uri));
                        //连接登录FTP服务器
                        request.Credentials = new NetworkCredential(Username, Password);
                        request.KeepAlive = false;
                        //设置请求的方法是FTP文件下载
                        request.Method = WebRequestMethods.Ftp.DownloadFile;
                        //获取一个请求响应对象
                        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
                        //获取请求的响应流
                        responseStream = response.GetResponseStream();
                        //判断本地文件是否存在,如果存在,则打开和重写本地文件
                        if (File.Exists(FileName))
                            fs = File.Open(FileName, FileMode.Open, FileAccess.ReadWrite);
                        //判断本地文件是否存在,如果不存在,则创建本地文件
                        else
                        {
                            fs = File.Create(FileName);
                        }
                        if (fs != null)
                        {
                            int buffer_count = 65536;
                            byte[] buffer = new byte[buffer_count];
                            int size = 0;
                            while ((size = responseStream.Read(buffer, 0, buffer_count)) > 0)
                            {
                                fs.Write(buffer, 0, size);
                            }
                            fs.Flush();
                            fs.Close();
                            responseStream.Close();
                        }
                        return true;
                    }
                    catch (Exception ex)
                    {
                        return false;
                    }
                    finally
                    {
                        if (fs != null)
                            fs.Close();
                        if (responseStream != null)
                            responseStream.Close();
                    }
                }
    
                  /// <summary>
                  /// 保存和上传图片
                  /// </summary>
                  /// <param name="imgtwo">需要上传图片</param>
                  /// <param name="date"></param>
                  /// <returns>文件路径</returns>
                public string SaveUploadImg(Bitmap imgtwo)
                {
                    string filePathstr = string.Empty;
                    string filepathsql = null;
                    try
                    {
                        string pathstr = DateTime.Now.ToString().Replace("/", "").Replace("-", "").Replace(":", "").Replace(" ", "");
                        string rodumlist = GeneralHelper.GetMixPwd(10);//10位随机数
                        filePathstr = "~/File/" + pathstr + rodumlist + ".jpg";
                        imgtwo.Save(HttpContext.Current.Server.MapPath(filePathstr));//把文件上传到服务器的绝对路径上
                        bool check;
                        string ftpPath = DateTime.Now.ToString("yyyy-MM-dd");
                        string uri = @"ftp://" + ipaddress + "/";
                        //检查是否存在此目录文件夹
                        if (CheckDirectoryExist(uri, ftpPath, Username, Password))
                        {
                            //存在此文件夹就直接上传
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        else
                        {
                            MakeDir(uri, ftpPath, Username, Password);//创建
                            check = Upload(HttpContext.Current.Server.MapPath(filePathstr), ipaddress, ftpPath, Username, Password);
                        }
                        //成功就更新
                        if (check)
                        {
                            filepathsql = ftpPath + "/" + pathstr + rodumlist + ".jpg";
                        }
                        //检查是否存在此文件
                        if (File.Exists(HttpContext.Current.Server.MapPath(filePathstr)))
                        {
                            File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        }
                        imgtwo.Dispose();
                        return filepathsql;
                    }
                    catch (Exception ex)
                    {
                        File.Delete(HttpContext.Current.Server.MapPath(filePathstr));
                        return filepathsql;
                    }
                }
                #region
                /// <summary>
                  /// 文件大小
                  /// </summary>
                public bool _File_Length(int ContentLength)
                {
                    bool length = false;
                    int FileLen = ContentLength;
                    if (FileLen > 2048 * 1024 == false)//不能超过2M
                    {
                        length = true;
                    }
                    return length;
                }
                #endregion
                //用来获取文件类型
                public bool File_PastFileName(string fileName)
                {
                    //bmp, doc, docx, gif, jpg, jpeg, pdf, png, tif, tiff
                    bool isnot = true;
                    string ext = Path.GetExtension(fileName);
                    string[] type = Filetype.Split(';');
                    for (int i = 0; i < type.Length; i++)
                    {
                        if (type[i].ToLower() == ext.ToLower())
                        {
                            isnot = false;
                            break;
                        }
                    }
                    return isnot;
                }
            }
    
        }
    
        internal class GeneralHelper
        {
            internal static string GetMixPwd(int v)
            {
                throw new NotImplementedException();
            }
        }
    

      

    对于不可控的事情,保持乐观; 对于可控的事情,保持谨慎
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  • 原文地址:https://www.cnblogs.com/baylor2019/p/12842524.html
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