c_实现FTP方法(一)-FtpWebRequest

class FTP_Class{string ftpServerIP;string ftpUserID;string ftpPassword;FtpWebRequest reqFTP;public void Connecttest(string ftpServerIP, string ftpUserID, string ftpPassword){// 根据uri创建FtpWebRequest对象reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP));// 指定数据传输类型eBinary = true;// ftp用户名和密码reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);}#region 连接/// <summary>/// 连接/// </summary>/// <param name="path"></param>private void Connect(String path)//连接ftp{// 根据uri创建FtpWebRequest对象reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));// 指定数据传输类型eBinary = true;// ftp用户名和密码reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);}#endregion#region ftp登录信息/// <summary>/// ftp登录信息/// </summary>/// <param name="ftpServerIP">ftpServerIP</param>/// <param name="ftpUserID">ftpUserID</param>/// <param name="ftpPassword">ftpPassword</param>public void FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword){this.ftpServerIP = ftpServerIP;this.ftpUserID = ftpUserID;this.ftpPassword = ftpPassword;}#endregion#region 获取文件列表/// <summary>/// 获取文件列表/// </summary>/// <param name="path"></param>/// <param name="WRMethods"></param>/// <returns></returns>private string[] GetFileList(string path, string WRMethods)//上面的代码示例了如何从ftp服务器上获得文件列表{string[] downloadFiles;StringBuilder result = new StringBuilder();try{Connect(path);reqFTP.Method = WRMethods;WebResponse response = reqFTP.GetResponse();StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.UTF8);//中文文件名string line = reader.ReadLine();while (line != null){result.Append(line);result.Append("\n");line = reader.ReadLine();}// to remove the trailing '\n'result.Remove(result.ToString().LastIndexOf('\n'), 1);reader.Close();response.Close();return result.ToString().Split('\n');}catch (Exception ex){System.Windows.Forms.MessageBox.Show(ex.Message);downloadFiles = null;return downloadFiles;}}public string[] GetFileList(string path)//上面的代码示例了如何从ftp服务器上获得文件列表{return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory);}public string[] GetFileList()//上面的代码示例了如何从ftp服务器上获得文件列表{return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);}#endregion#region 上传文件/// <summary>/// 上传文件/// </summary>/// <param name="filename"></param>public bool Upload(string filename, string path, out string errorinfo) //上面的代码实现了从ftp服务器上载文件的功能{path = path.Replace("\\", "/");FileInfo fileInf = new FileInfo(filename);string uri = "ftp://" + path + "/" + ;Connect(uri);//连接// 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;// 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kbint 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();// 每次读文件流的kbcontentLen = fs.Read(buff, 0, buffLength);// 流内容没有结束while (contentLen != 0){// 把内容从file stream 写入upload streamstrm.Write(buff, 0, contentLen);contentLen = fs.Read(buff, 0, buffLength);}// 关闭两个流strm.Close();fs.Close();errorinfo = "完成";return true;}catch (Exception ex){errorinfo = string.Format("因{0},无法完成上传", ex.Message);return false;}}#endregion#region 续传文件/// <summary>/// 续传文件/// </summary>/// <param name="filename"></param>public bool Upload(string filename, long size,string path, out string errorinfo) //上面的代码实现了从ftp服务器上载文件的功能{path = path.Replace("\\", "/");FileInfo fileInf = new FileInfo(filename);//string uri = "ftp://" + path + "/" + ;string uri = "ftp://" + path;Connect(uri);//连接// 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.AppendFile;// 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kbint 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{StreamReader dsad = new StreamReader(fs);fs.Seek(size, SeekOrigin.Begin);// 把上传的文件写入流Stream strm = reqFTP.GetRequestStream();// 每次读文件流的kbcontentLen = fs.Read(buff, 0, buffLength);// 流内容没有结束while (contentLen != 0){// 把内容从file stream 写入upload streamstrm.Write(buff, 0, contentLen);contentLen = fs.Read(buff, 0, buffLength);}// 关闭两个流strm.Close();fs.Close();errorinfo = "完成";return true;}catch (Exception ex){errorinfo = string.Format("因{0},无法完成上传", ex.Message);return false;}}#endregion#region 下载文件/// <summary>/// 下载文件/// </summary>/// <param name="filePath"></param>/// <param name="fileName"></param>/// <param name="errorinfo"></param>/// <returns></returns>public bool Download(string ftpfilepath, string filePath, string fileName, out string errorinfo)////上面的代码实现了从ftp服务器下载文件的功能{try{filePath = filePath.Replace("我的电脑\\", "");String onlyFileName = Path.GetFileName(fileName);string newFileName = filePath + onlyFileName;if (File.Exists(newFileName)){errorinfo = string.Format("本地文件{0}已存在,无法下载", newFileName);return false;}ftpfilepath = ftpfilepath.Replace("\\", "/");string url = "ftp://" + ftpfilepath;Connect(url);//连接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);FileStream outputStream = new FileStream(newFileName, FileMode.Create);while (readCount > 0){outputStream.Write(buffer, 0, readCount);readCount = ftpStream.Read(buffer, 0, bufferSize);}ftpStream.Close();outputStream.Close();response.Close();errorinfo = "";return true;}catch (Exception ex){errorinfo = string.Format("因{0},无法下载", ex.Message);return false;}}#endregion#region 删除文件/// <summary>/// 删除文件/// </summary>/// <param name="fileName"></param>public void DeleteFileName(string fileName){try{FileInfo fileInf = new FileInfo(fileName);string uri = "ftp://" + ftpServerIP + "/" + ;Connect(uri);//连接// 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.DeleteFile;FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();response.Close();}catch (Exception ex){//MessageBox.Show(ex.Message, "删除错误");}}#endregion#region 在ftp上创建目录/// <summary>/// 在ftp上创建目录/// </summary>/// <param name="dirName"></param>public void MakeDir(string dirName){try{string uri = "ftp://" + ftpServerIP + "/" + dirName;Connect(uri);//连接reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();response.Close();}catch (Exception ex){// MessageBox.Show(ex.Message);}}#endregion#region 删除ftp上目录/// <summary>/// 删除ftp上目录/// </summary>/// <param name="dirName"></param>public void delDir(string dirName){try{string uri = "ftp://" + ftpServerIP + "/" + dirName;Connect(uri);//连接reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();response.Close();}catch (Exception ex){// MessageBox.Show(ex.Message);}}#endregion#region 获得ftp上文件大小/// <summary>/// 获得ftp上文件大小/// </summary>/// <param name="filename"></param>/// <returns></returns>public long GetFileSize(string filename){long fileSize = 0;filename = filename.Replace("\\","/");try{// FileInfo fileInf = new FileInfo(filename);//string uri1 = "ftp://" + ftpServerIP + "/" + ;// string uri = filename;string uri = "ftp://" + filename;Connect(uri);//连接reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();fileSize = response.ContentLength;response.Close();}catch (Exception ex){// MessageBox.Show(ex.Message);}return fileSize;}#endregion#region ftp上文件改名/// <summary>/// ftp上文件改名/// </summary>/// <param name="currentFilename"></param>/// <param name="newFilename"></param>public void Rename(string currentFilename, string newFilename){try{FileInfo fileInf = new FileInfo(currentFilename);string uri = "ftp://" + ftpServerIP + "/" + ;Connect(uri);//连接reqFTP.Method = WebRequestMethods.Ftp.Rename;reqFTP.RenameTo = newFilename;FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); //Stream ftpStream = response.GetResponseStream();//ftpStream.Close();response.Close();}catch (Exception ex){// MessageBox.Show(ex.Message);}}#endregion#region 获得文件明晰/// <summary>/// 获得文件明晰/// </summary>/// <returns></returns>public string[] GetFilesDetailList(){return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);}/// <summary>/// 获得文件明晰/// </summary>/// <param name="path"></param>/// <returns></returns>public string[] GetFilesDetailList(string path){path = path.Replace("\\", "/");return GetFileList("ftp://" + path, WebRequestMethods.Ftp.ListDirectoryDetails);}#endregion}。