C/S模式上传图片是报错 基础连接已经关闭: 服务器提交了协议冲突。

Question

 private void Upload(string filename)
        {
            FileInfo fileInf = new FileInfo(filename);            string uri = "ftp://" + ftpServerIP+":"+"28" + "/gameData/" + fileInf.Name;
            FtpWebRequest reqFTP;            // 根据uri创建FtpWebRequest对象 
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/gameData" + fileInf.Name));            // ftp用户名和密码
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);            // 默认为true，连接不会被关闭
            // 在一个命令之后被执行
            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;            // 缓冲大小设置为2kb
            int buffLength = 2048;            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();
            try
            {
                
                // 把上传的文件写入流
                Stream strm = reqFTP.GetRequestStream();//此处报错！！！！                // 每次读文件流的2kb
                contentLen = fs.Read(buff, 0, buffLength);                // 流内容没有结束
                while (contentLen != 0)
                {
                    // 把内容从file stream 写入 upload stream
                    strm.Write(buff, 0, contentLen);                    contentLen = fs.Read(buff, 0, buffLength);
                }                // 关闭两个流
                strm.Close();
                fs.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Upload Error");
                // Response.Write("Upload Error：" + ex.Message);
            }
        }

Answer 1

  Stream strm = reqFTP.GetRequestStream();//此处报错！！！！
  这句话报错    郁闷     

Answer 2

public class FTP
    {
        string ftpServerIP;
        /// <summary>
        /// FTP服务器IP
        /// </summary>
        public string FtpServerIP
        {
            get { return ftpServerIP; }
            set { ftpServerIP = value; }
        }
        string ftpRemotePath;        /// <summary>
        /// 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
        /// </summary>
        public string FtpRemotePath
        {
            get { return ftpRemotePath; }
            set
            {
                ftpRemotePath = value;
                if (!string.IsNullOrEmpty(ftpRemotePath))
                {
                    this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
                }
            }
        }
        string ftpUserID;
        /// <summary>
        /// 用户名
        /// </summary>
        public string FtpUserID
        {
            get { return ftpUserID; }
            set { ftpUserID = value; }
        }
        string ftpPassword;        /// <summary>
        /// 密码
        /// </summary>
        public string FtpPassword
        {
            get { return ftpPassword; }
            set { ftpPassword = value; }
        }        string ftpURI;        /// <summary>
        /// 连接FTP
        /// </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 FTP(string ftpServerIp, string ftpRemotePath, string ftpUserId, string ftpPassword)
        {
            this.ftpServerIP = ftpServerIp;
            this.ftpRemotePath = ftpRemotePath;
            this.ftpUserID = ftpUserId;
            this.ftpPassword = ftpPassword;
            if (!string.IsNullOrEmpty(ftpRemotePath))
            {
                this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
            }
            else
            {
                this.ftpURI = "ftp://" + ftpServerIP + "/";
            }
        }
            }

Answer 3

/// <summary>
        /// 上传
        /// </summary>
        /// <param name="filename"></param>
        public void Upload(string filename)
        {
            FileInfo fileInf = new FileInfo(filename);
            string uri = ftpURI + fileInf.Name;
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            reqFTP.UseBinary = true;
            reqFTP.ContentLength = fileInf.Length;
            int buffLength = 2048;
            byte[] buff = new byte[buffLength];
            int contentLen;
            FileStream fs = fileInf.OpenRead();
            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();
        }
        /// <summary>
        /// 上传
        /// </summary>
        /// <param name="filename"></param>
        public void Upload(string dirName, string filename)
        {
            FileInfo fileInf = new FileInfo(filename);
            string uri = ftpURI + dirName + "/" + fileInf.Name;
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            reqFTP.UseBinary = true;
            reqFTP.ContentLength = fileInf.Length;
            int buffLength = 2048;
            byte[] buff = new byte[buffLength];
            int contentLen;
            FileStream fs = fileInf.OpenRead();
            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();
        }
        /// <summary>
        /// 下载
        /// </summary>
        /// <param name="filePath"></param>
        /// <param name="fileName"></param>
        public void Download(string filePath, string fileName)
        {
            FtpWebRequest reqFTP;
            FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
            reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
            reqFTP.UseBinary = true;
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            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();
        }
        /// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="fileName"></param>
        public void Delete(string fileName)
        {
            string uri = ftpURI + fileName;
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
            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();
        }
        /// <summary>
        /// 获取当前目录下明细(包含文件和文件夹)
        /// </summary>
        /// <returns></returns>
        public string[] GetFilesDetailList()
        {
            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(), Encoding.Default);
            string line = reader.ReadLine();
            line = reader.ReadLine();
            line = reader.ReadLine();
            while (line != null)
            {
                result.Append(line);
                result.Append("\n");
                line = reader.ReadLine();
            }
            if (result.ToString().LastIndexOf("\n") > 0)
            {
                result.Remove(result.ToString().LastIndexOf("\n"), 1);
            }
            reader.Close();
            response.Close();
            return result.ToString().Split('\n');
        }
        /// <summary>
        /// 获取当前目录下文件列表(仅文件)
        /// </summary>
        /// <returns></returns>
        public string[] GetFileList(string mask)
        {
            StringBuilder result = new StringBuilder();
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
            reqFTP.UseBinary = true;
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
            WebResponse response = reqFTP.GetResponse();
            StreamReader reader = new StreamReader(response.GetResponseStream());
            string line = reader.ReadLine();
            while (line != null)
            {
                if (mask.Trim() != string.Empty && mask.Trim() != "*.*")
                {
                    string mask_ = mask.Substring(0, mask.IndexOf("*"));
                    if (line.Substring(0, mask_.Length) == mask_)
                    {
                        result.Append(line);
                        result.Append("\n");
                    }
                }
                else
                {
                    result.Append(line);
                    result.Append("\n");
                }
                line = reader.ReadLine();
            }
            result.Remove(result.ToString().LastIndexOf('\n'), 1);
            reader.Close();
            response.Close();
            return result.ToString().Split('\n');
        }
        

Answer 4

/// <summary>
        /// 获取当前目录下所有的文件夹列表(仅文件夹)
        /// </summary>
        /// <returns></returns>
        public string[] GetDirectoryList()
        {
            string[] drectory = GetFilesDetailList();
            string m = string.Empty;
            foreach (string str in drectory)
            {
                if (string.IsNullOrEmpty(str))
                    continue;
                if (str.Trim().Substring(0, 1).ToUpper() == "D")
                {
                    m += str.Substring(54).Trim() + "\n";
                }
            }
            char[] n = new char[] { '\n' };
            return m.Split(n);
        }
        /// <summary>
        /// 判断当前目录下指定的子目录是否存在
        /// </summary>
        /// <param name="RemoteDirectoryName">指定的目录名</param>
        public bool DirectoryExist(string RemoteDirectoryName)
        {
            string[] dirList = GetDirectoryList();
            foreach (string str in dirList)
            {
                if (str.Trim() == RemoteDirectoryName.Trim())
                {
                    return true;
                }
            }
            return false;
        }
        /// <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>
        /// <param name="dirName"></param>
        public void MakeDir(string dirName)
        {
            FtpWebRequest reqFTP;
            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();
        }
        /// <summary>
        /// 获取指定文件大小
        /// </summary>
        /// <param name="filename"></param>
        /// <returns></returns>
        public long GetFileSize(string filename)
        {
            FtpWebRequest reqFTP;
            long fileSize = 0;
            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();
            return fileSize;
        }
        /// <summary>
        /// 改名
        /// </summary>
        /// <param name="currentFilename"></param>
        /// <param name="newFilename"></param>
        public void ReName(string currentFilename, string newFilename)
        {
            FtpWebRequest reqFTP;
            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();
        }
        /// <summary>
        /// 移动文件
        /// </summary>
        /// <param name="currentFilename"></param>
        /// <param name="newFilename"></param>
        public void MovieFile(string currentFilename, string newDirectory)
        {
            ReName(currentFilename, newDirectory);
        }
        /// <summary>
        /// 切换当前目录
        /// </summary>
        /// <param name="DirectoryName"></param>
        public void GotoDirectory(string DirectoryName, bool flag)
        {
            if (string.IsNullOrEmpty(DirectoryName))
            {
                throw new Exception("根目录不能为空");
            }
            if (flag)
            {
                if (string.IsNullOrEmpty(ftpRemotePath))
                {
                    this.ftpURI = "ftp://" + ftpServerIP + "/" + DirectoryName + "/";
                }
                else
                {
                    this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/" + DirectoryName + "/";
                }
            }
            else
            {
                this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
            }
            this.ftpRemotePath = DirectoryName;
        }