求C# FTP下载文件夹的代码
各位高手：
我想要实现FTP下载一个目录下所有内容（包括文件以及子目录等等）的功能。
请高手给我一个可以执行的完整代码。
注：不要给我粘贴各种链接，我也查过，但是很多都不能用，所以请大侠们试验一下，把好用的代码提供一下，我将万分感谢！
[解决办法]
- C# code
private void Download(string filePath, string fileName){ FtpWebRequest reqFTP; try { FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create); reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + 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(); } catch (Exception ex) { MessageBox.Show(ex.Message); }}
[解决办法]
完整一点
- C# code
public class FtpFile { string ftpServerIP; public string FtpServerIP { get { return ftpServerIP; } set { ftpServerIP = value; } } string ftpUserID; public string FtpUserID { get { return ftpUserID; } set { ftpUserID = value; } } string ftpPassword; public string FtpPassword { get { return ftpPassword; } set { ftpPassword = value; } } FtpWebRequest reqFTP; public static string FtpServer = System.Configuration.ConfigurationSettings.AppSettings["FtpServer"]; public static string FtpUser = System.Configuration.ConfigurationSettings.AppSettings["FtpUser"]; public static string FtpPwd = System.Configuration.ConfigurationSettings.AppSettings["FtpPwd"]; 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 reqFTP.UseBinary = true; // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); } public FtpFile(string ftpServerIP, string ftpUserID, string ftpPassword) { this.ftpServerIP = ftpServerIP; this.ftpUserID = ftpUserID; this.ftpPassword = ftpPassword; } public FtpFile() { this.ftpServerIP = FtpServer; this.ftpUserID = FtpUser; this.ftpPassword = FtpPwd; }
[解决办法]
- C# code
//都调用这个 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); } public string Upload(string filedir, string filename) //上面的代码实现了从ftp服务器上载文件的功能 { FileInfo fileInf = new FileInfo(filename); string uri = "ftp://" + ftpServerIP + filedir + fileInf.Name; 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kb int buffLength = 2048 * 5; 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kb 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(); return ""; } catch (Exception ex) { return "Upload Error" + ex.Message; } } /// <summary> /// 下载文件 /// </summary> /// <param name="filedir">文件夹地址：必须是服务器根级相对地址，比如"/ftpFiles/images"</param> /// <param name="filePath">下载文件新路径，但不包含文件名，如：D:\Photo</param> /// <param name="fileName">ftp文件绝对路径,如:ftp://127.0.0.1/Photo/1.bmp</param> /// <returns></returns> public string Download(string filedir, string filePath, string fileName)////上面的代码实现了从ftp服务器下载文件的功能 { try { String onlyFileName = Path.GetFileName(fileName); string newFileName = filePath + "\\" + onlyFileName; if (File.Exists(newFileName)) { return "本地文件" + newFileName + "已存在,无法下载"; } string url = "ftp://" + ftpServerIP + filedir + onlyFileName; 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 * 5; 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(); return ""; } catch (Exception ex) { return "因" + ex.Message + ",无法下载"; } } //删除文件 public void DeleteFileName(string filedir, string fileName) { try { string fName = Path.GetFileName(fileName); string uri = "ftp://" + ftpServerIP + filedir + fName; 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"); } } //创建目录 public string 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(); return ""; } catch (WebException ex) { return "[Make Dir]" + ex.Message; } } //删除目录 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); } } //获得文件大小 public long GetFileSize(string filename) { long fileSize = 0; try { FileInfo fileInf = new FileInfo(filename); string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name; 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; } //文件改名 public void Rename(string currentFilename, string newFilename) { try { FileInfo fileInf = new FileInfo(currentFilename); string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name; 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); } } //获得文件明晰 public string[] GetFilesDetailList() { return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails); } //获得文件明晰 public string[] GetFilesDetailList(string path) { return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails); } }
[解决办法]