网络协议的实现与应用实训报告(11)

FTP 服务器的安装和配置方法FTP 客户端的开发方法

if (fileName.Length == 0) {

MessageBox.Show("请先选择要下载的文件"); return; }

string filePath ="D:\\ftpdownload\\DownLoad"; // string filePath = Application.StartupPath

if (Directory.Exists(filePath) == false) {

Directory.CreateDirectory(filePath); }

Stream responseStream = null;

FileStream fileStream = null;

StreamReader reader = null; try {

string uri = GetUriString(fileName);

MessageBox.Show(uri);

FtpWebRequest request = CreateFtpWebRequest(uri, WebRequestMethods.Ftp.DownloadFile);

FtpWebResponse response = GetFtpResponse(request);

if (response == null) {

return; }

responseStream = response.GetResponseStream(); string path = filePath + "\\" + fileName; MessageBox.Show(path);

fileStream = File.Create(path); byte[] buffer = new byte[8196]; int bytesRead; while (true) {

bytesRead = responseStream.Read(buffer, 0, buffer.Length);

if (bytesRead == 0)

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