C#之ftp- 该实例所需要的引用：
一：引用
using System; using System.Collections.Generic; using System.Text; using System.IO; using System.Net;using System.Text.RegularExpressions;
二：命名空间及字段
namespace DotNet.Utilities{ public class FTPHelper { #region 字段 string ftpURI; string ftpUserID; string ftpServerIP; string ftpPassword; string ftpRemotePath; #endregion /// /// 连接FTP服务器 /// /// FTP连接地址 /// 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 /// 用户名 /// 密码 public FTPHelper(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword) { ftpServerIP = FtpServerIP; ftpRemotePath = FtpRemotePath; ftpUserID = FtpUserID; ftpPassword = FtpPassword; ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/"; }
三：ftp上传文件实例代码，只需要传递相对应的文件名，调用该方法即可
////// 上传 /// public void Upload(string filename) { FileInfo fileInf = new FileInfo(filename); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileInf.Name)); reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.UploadFile; reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.ContentLength = fileInf.Length; int buffLength = 2048; byte[] buff = new byte[buffLength]; int contentLen; FileStream fs = fileInf.OpenRead(); try { 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(); } catch (Exception ex) { throw new Exception(ex.Message); } }
四：ftp下载之实例代码，只需要传递相对应的文件路径，文件名，调用该方法即可完成
////// 下载 /// public void Download(string filePath, string fileName) { try { FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName)); reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; reqFTP.UseBinary = true; 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) { throw new Exception(ex.Message); } }
五：ftp删除文件之实例代码，有上传和下载，必然就会有删除，依旧简单，传入文件名即可完成删除
////// 删除文件 /// public void Delete(string fileName) { try { FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName)); reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.DeleteFile; reqFTP.KeepAlive = false; 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(); } catch (Exception ex) { throw new Exception(ex.Message); } }
六：ftp获取列表之实例代码，获取当前目录下明细(包含文件和文件夹) ,这个可能用的不多，但也是需要了解的
////// 获取当前目录下明细(包含文件和文件夹) /// public string[] GetFilesDetailList() { try { 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()); string line = reader.ReadLine(); line = reader.ReadLine(); line = reader.ReadLine(); while (line != null) { 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'); } catch (Exception ex) { throw new Exception(ex.Message); } }
七：ftp之实例代码，获取FTP文件列表(包括文件夹)
////// 获取FTP文件列表(包括文件夹) /// private string[] GetAllList(string url) { Listlist = new List (); FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri(url)); req.Credentials = new NetworkCredential(ftpPassword, ftpPassword); req.Method = WebRequestMethods.Ftp.ListDirectory; req.UseBinary = true; req.UsePassive = true; try { using (FtpWebResponse res = (FtpWebResponse)req.GetResponse()) { using (StreamReader sr = new StreamReader(res.GetResponseStream())) { string s; while ((s = sr.ReadLine()) != null) { list.Add(s); } } } } catch (Exception ex) { throw (ex); } return list.ToArray(); }
八：ftp创建文件夹之实例代码，如何创建文件夹
////// 创建文件夹 /// public void MakeDir(string dirName) { FtpWebRequest reqFTP; try { 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(); } catch (Exception ex) { } }
九：ftp之指定文件大小 ，依旧只需要提供文件名即可
////// 获取指定文件大小 /// public long GetFileSize(string filename) { FtpWebRequest reqFTP; long fileSize = 0; try { 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(); } catch (Exception ex) { } return fileSize; }
十：ftp之更改文件名，传递当前文件名和新文件名即可
////// 更改文件名 /// public void ReName(string currentFilename, string newFilename) { FtpWebRequest reqFTP; try { 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(); } catch (Exception ex) { } }
十一：ftp之移动文件，这个用的不是很多，但是有时候也是经常用到的，当前路径，新路径即可，这里要用绝对路径哦
////// 移动文件 /// public void MovieFile(string currentFilename, string newDirectory) { ReName(currentFilename, newDirectory); } }}
哈哈，总结了这么多，希望给需要的人一些帮助，当然还有一些其他的方法我就不一一列出来了，多行多努力！与大家共勉