FTP访问类代码,CSharp代码库,德仔网

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【CSharp】 FTP访问类
作者:Duncan / 发布于2014/11/18/ 342

	using System;
	using System.Collections.Generic;
	using System.Text;
	using System.IO;
	using System.Net;
	using System.Text.RegularExpressions;

	namespace DotNet.Utilities
	{
	 public class FTPHelper
	 {
	 #region 字段
	 string ftpURI;
	 string ftpUserID;
	 string ftpServerIP;
	 string ftpPassword;
	 string ftpRemotePath;
	 #endregion

	 /// <summary>
	 /// 连接FTP服务器
	 /// </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 FTPHelper(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
	 {
	 ftpServerIP = FtpServerIP;
	 ftpRemotePath = FtpRemotePath;
	 ftpUserID = FtpUserID;
	 ftpPassword = FtpPassword;
	 ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
	 }

	 /// <summary>
	 /// 上传
	 /// </summary>
	 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);
	 }
	 }

	 /// <summary>
	 /// 下载
	 /// </summary>
	 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);
	 }
	 }

	 /// <summary>
	 /// 删除文件
	 /// </summary>
	 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);
	 }
	 }

	 /// <summary>
	 /// 获取当前目录下明细(包含文件和文件夹)
	 /// </summary>
	 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);
	 }
	 }

	 /// <summary>
	 /// 获取FTP文件列表(包括文件夹)
	 /// </summary>
	 private string[] GetAllList(string url)
	 {
	 List<string> list = new List<string>();
	 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();
	 }

	 /// <summary>
	 /// 获取当前目录下文件列表(不包括文件夹)
	 /// </summary>
	 public string[] GetFileList(string url)
	 {
	 StringBuilder result = new StringBuilder();
	 FtpWebRequest reqFTP;
	 try
	 {
	 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
	 reqFTP.UseBinary = true;
	 reqFTP.Credentials = new NetworkCredential(ftpPassword, ftpPassword);
	 reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
	 WebResponse response = reqFTP.GetResponse();
	 StreamReader reader = new StreamReader(response.GetResponseStream());
	 string line = reader.ReadLine();
	 while (line != null)
	 {

	 if (line.IndexOf("<DIR>") == -1)
	 {
	 result.Append(Regex.Match(line, @"[\S]+ [\S]+", RegexOptions.IgnoreCase).Value.Split(' ')[1]);
	 result.Append("\n");
	 }
	 line = reader.ReadLine();
	 }
	 result.Remove(result.ToString().LastIndexOf('\n'), 1);
	 reader.Close();
	 response.Close();
	 }
	 catch (Exception ex)
	 {
	 throw (ex);
	 }
	 return result.ToString().Split('\n');
	 }

	 /// <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>
	 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)
	 { }
	 }

	 /// <summary>
	 /// 获取指定文件大小
	 /// </summary>
	 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;
	 }

	 /// <summary>
	 /// 更改文件名
	 /// </summary>
	 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)
	 { }
	 }

	 /// <summary>
	 /// 移动文件
	 /// </summary>
	 public void MovieFile(string currentFilename, string newDirectory)
	 {
	 ReName(currentFilename, newDirectory);
	 }

	 /// <summary>
	 /// 切换当前目录
	 /// </summary>
	 /// <param name="IsRoot">true:绝对路径 false:相对路径</param>
	 public void GotoDirectory(string DirectoryName, bool IsRoot)
	 {
	 if (IsRoot)
	 {
	 ftpRemotePath = DirectoryName;
	 }
	 else
	 {
	 ftpRemotePath += DirectoryName + "/";
	 }
	 ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
	 }
	 }
	}
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