FTP操作类

FTPClient.cs：

using System;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
using System.Threading;

namespace RuRo.Common.FTP
{
/// <summary>
/// FTP 操作类客户端
/// </summary>
public class FTPClient
{
public static object obj = new object();

#region 构造函数
/// <summary>
/// 缺省构造函数
/// </summary>
public FTPClient()
{
strRemoteHost = "";
strRemotePath = "";
strRemoteUser = "";
strRemotePass = "";
strRemotePort = 21;
bConnected = false;
}

/// <summary>
/// 构造函数
/// </summary>
public FTPClient(string remoteHost, string remotePath, string remoteUser, string remotePass, int remotePort)
{
strRemoteHost = remoteHost;
strRemotePath = remotePath;
strRemoteUser = remoteUser;
strRemotePass = remotePass;
strRemotePort = remotePort;
Connect();
}
#endregion

#region 字段
private int strRemotePort;
private Boolean bConnected;
private string strRemoteHost;
private string strRemotePass;
private string strRemoteUser;
private string strRemotePath;

/// <summary>
/// 服务器返回的应答信息(包含应答码)
/// </summary>
private string strMsg;
/// <summary>
/// 服务器返回的应答信息(包含应答码)
/// </summary>
private string strReply;
/// <summary>
/// 服务器返回的应答码
/// </summary>
private int iReplyCode;
/// <summary>
/// 进行控制连接的socket
/// </summary>
private Socket socketControl;
/// <summary>
/// 传输模式
/// </summary>
private TransferType trType;
/// <summary>
/// 接收和发送数据的缓冲区
/// </summary>
private static int BLOCK_SIZE = 512;
/// <summary>
/// 编码方式
/// </summary>
Encoding ASCII = Encoding.ASCII;
/// <summary>
/// 字节数组
/// </summary>
Byte[] buffer = new Byte[BLOCK_SIZE];
#endregion

#region 属性
/// <summary>
/// FTP服务器IP地址
/// </summary>
public string RemoteHost
{
get
{
return strRemoteHost;
}
set
{
strRemoteHost = value;
}
}

/// <summary>
/// FTP服务器端口
/// </summary>
public int RemotePort
{
get
{
return strRemotePort;
}
set
{
strRemotePort = value;
}
}

/// <summary>
/// 当前服务器目录
/// </summary>
public string RemotePath
{
get
{
return strRemotePath;
}
set
{
strRemotePath = value;
}
}

/// <summary>
/// 登录用户账号
/// </summary>
public string RemoteUser
{
set
{
strRemoteUser = value;
}
}

/// <summary>
/// 用户登录密码
/// </summary>
public string RemotePass
{
set
{
strRemotePass = value;
}
}

/// <summary>
/// 是否登录
/// </summary>
public bool Connected
{
get
{
return bConnected;
}
}
#endregion

#region 链接
/// <summary>
/// 建立连接
/// </summary>
public void Connect()
{
lock (obj)
{
socketControl = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort);
try
{
socketControl.Connect(ep);
}
catch (Exception)
{
throw new IOException("不能连接ftp服务器");
}
}
ReadReply();
if (iReplyCode != 220)
{
DisConnect();
throw new IOException(strReply.Substring(4));
}
SendCommand("USER " + strRemoteUser);
if (!(iReplyCode == 331 || iReplyCode == 230))
{
CloseSocketConnect();
throw new IOException(strReply.Substring(4));
}
if (iReplyCode != 230)
{
SendCommand("PASS " + strRemotePass);
if (!(iReplyCode == 230 || iReplyCode == 202))
{
CloseSocketConnect();
throw new IOException(strReply.Substring(4));
}
}
bConnected = true;
ChDir(strRemotePath);
}

/// <summary>
/// 关闭连接
/// </summary>
public void DisConnect()
{
if (socketControl != null)
{
SendCommand("QUIT");
}
CloseSocketConnect();
}
#endregion

#region 传输模式
/// <summary>
/// 传输模式:二进制类型、ASCII类型
/// </summary>
public enum TransferType { Binary, ASCII };

/// <summary>
/// 设置传输模式
/// </summary>
/// <param name="ttType">传输模式</param>
public void SetTransferType(TransferType ttType)
{
if (ttType == TransferType.Binary)
{
SendCommand("TYPE I");//binary类型传输
}
else
{
SendCommand("TYPE A");//ASCII类型传输
}
if (iReplyCode != 200)
{
throw new IOException(strReply.Substring(4));
}
else
{
trType = ttType;
}
}

/// <summary>
/// 获得传输模式
/// </summary>
/// <returns>传输模式</returns>
public TransferType GetTransferType()
{
return trType;
}
#endregion

#region 文件操作
/// <summary>
/// 获得文件列表
/// </summary>
/// <param name="strMask">文件名的匹配字符串</param>
public string[] Dir(string strMask)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("NLST " + strMask);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226))
{
throw new IOException(strReply.Substring(4));
}
strMsg = "";
Thread.Sleep(2000);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
strMsg += ASCII.GetString(buffer, 0, iBytes);
if (iBytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] strsFileList = strMsg.Split(seperator);
socketData.Close(); //数据socket关闭时也会有返回码
if (iReplyCode != 226)
{
ReadReply();
if (iReplyCode != 226)
{

throw new IOException(strReply.Substring(4));
}
}
return strsFileList;
}

public void newPutByGuid(string strFileName, string strGuid)
{
if (!bConnected)
{
Connect();
}
string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
strGuid = str + "\\" + strGuid;
Socket socketData = CreateDataSocket();
SendCommand("STOR " + Path.GetFileName(strGuid));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new FileStream(strGuid, FileMode.Open);
input.Flush();
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOExcept
1545d
ion(strReply.Substring(4));
}
}
}

/// <summary>
/// 获取文件大小
/// </summary>
/// <param name="strFileName">文件名</param>
/// <returns>文件大小</returns>
public long GetFileSize(string strFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("SIZE " + Path.GetFileName(strFileName));
long lSize = 0;
if (iReplyCode == 213)
{
lSize = Int64.Parse(strReply.Substring(4));
}
else
{
throw new IOException(strReply.Substring(4));
}
return lSize;
}

/// <summary>
/// 获取文件信息
/// </summary>
/// <param name="strFileName">文件名</param>
/// <returns>文件大小</returns>
public string GetFileInfo(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("LIST " + strFileName);
string strResult = "";
if (!(iReplyCode == 150 || iReplyCode == 125
|| iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
byte[] b = new byte[512];
MemoryStream ms = new MemoryStream();

while (true)
{
int iBytes = socketData.Receive(b, b.Length, 0);
ms.Write(b, 0, iBytes);
if (iBytes <= 0)
{

break;
}
}
byte[] bt = ms.GetBuffer();
strResult = System.Text.Encoding.ASCII.GetString(bt);
ms.Close();
return strResult;
}

/// <summary>
/// 删除
/// </summary>
/// <param name="strFileName">待删除文件名</param>
public void Delete(string strFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("DELE " + strFileName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}

/// <summary>
/// 重命名(如果新文件名与已有文件重名,将覆盖已有文件)
/// </summary>
/// <param name="strOldFileName">旧文件名</param>
/// <param name="strNewFileName">新文件名</param>
public void Rename(string strOldFileName, string strNewFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RNFR " + strOldFileName);
if (iReplyCode != 350)
{
throw new IOException(strReply.Substring(4));
}
// 如果新文件名与原有文件重名,将覆盖原有文件
SendCommand("RNTO " + strNewFileName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
#endregion

#region 上传和下载
/// <summary>
/// 下载一批文件
/// </summary>
/// <param name="strFileNameMask">文件名的匹配字符串</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
public void Get(string strFileNameMask, string strFolder)
{
if (!bConnected)
{
Connect();
}
string[] strFiles = Dir(strFileNameMask);
foreach (string strFile in strFiles)
{
if (!strFile.Equals(""))//一般来说strFiles的最后一个元素可能是空字符串
{
Get(strFile, strFolder, strFile);
}
}
}

/// <summary>
/// 下载一个文件
/// </summary>
/// <param name="strRemoteFileName">要下载的文件名</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strLocalFileName">保存在本地时的文件名</param>
public void Get(string strRemoteFileName, string strFolder, string strLocalFileName)
{
Socket socketData = CreateDataSocket();
try
{
if (!bConnected)
{
Connect();
}
SetTransferType(TransferType.Binary);
if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
catch
{
socketData.Close();
socketData = null;
socketControl.Close();
bConnected = false;
socketControl = null;
}
}

/// <summary>
/// 下载一个文件
/// </summary>
/// <param name="strRemoteFileName">要下载的文件名</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strLocalFileName">保存在本地时的文件名</param>
public void GetNoBinary(string strRemoteFileName, string strFolder, string strLocalFileName)
{
if (!bConnected)
{
Connect();
}

if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
Socket socketData = CreateDataSocket();
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
FileStream output = new FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}

/// <summary>
/// 上传一批文件
/// </summary>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strFileNameMask">文件名匹配字符(可以包含*和?)</param>
public void Put(string strFolder, string strFileNameMask)
{
string[] strFiles = Directory.GetFiles(strFolder, strFileNameMask);
foreach (string strFile in strFiles)
{
Put(strFile);
}
}

/// <summary>
/// 上传一个文件
/// </summary>
/// <param name="strFileName">本地文件名</param>
public void Put(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
if (Path.GetExtension(strFileName) == "")
SendCommand("STOR " + Path.GetFileNameWithoutExtension(strFileName));
else
SendCommand("STOR " + Path.GetFileName(strFileName));

if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}

FileStream input = new FileStream(strFileName, FileMode.Open);
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}

/// <summary>
/// 上传一个文件
/// </summary>
/// <param name="strFileName">本地文件路径（记得包含名称）</param>
/// <param name="strGuid">文件名称</param>
public void PutByGuid(string strFileName, string strGuid)
{
if (!bConnected)
{
Connect();
}
string str = strFileName.Substring(0, strFileName.LastIndexOf("\\"));
string strTypeName = strFileName.Substring(strFileName.LastIndexOf("."));
strGuid = str + "\\" + strGuid;
System.IO.File.Copy(strFileName, strGuid);
System.IO.File.SetAttributes(strGuid, System.IO.FileAttributes.Normal);
Socket socketData = CreateDataSocket();
SendCommand("STOR " + Path.GetFileName(strGuid));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new FileStream(strGuid, FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
File.Delete(strGuid);
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
#endregion

#region 目录操作
/// <summary>
/// 创建目录
/// </summary>
/// <param name="strDirName">目录名</param>
public void MkDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("MKD " + strDirName);
if (iReplyCode != 257)
{
throw new IOException(strReply.Substring(4));
}
}

/// <summary>
/// 删除目录
/// </summary>
/// <param name="strDirName">目录名</param>
public void RmDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RMD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}

/// <summary>
/// 改变目录
/// </summary>
/// <param name="strDirName">新的工作目录名</param>
public void ChDir(string strDirName)
{
if (strDirName.Equals(".") || strDirName.Equals(""))
{
return;
}
if (!bConnected)
{
Connect();
}
SendCommand("CWD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
this.strRemotePath = strDirName;
}
#endregion

#region 内部函数
/// <summary>
/// 将一行应答字符串记录在strReply和strMsg,应答码记录在iReplyCode
/// </summary>
private void ReadReply()
{
strMsg = "";
strReply = ReadLine();
iReplyCode = Int32.Parse(strReply.Substring(0, 3));
}

/// <summary>
/// 建立进行数据连接的socket
/// </summary>
/// <returns>数据连接socket</returns>
private Socket CreateDataSocket()
{
SendCommand("PASV");
if (iReplyCode != 227)
{
throw new IOException(strReply.Substring(4));
}
int index1 = strReply.IndexOf('(');
int index2 = strReply.IndexOf(')');
string ipData = strReply.Substring(index1 + 1, index2 - index1 - 1);
int[] parts = new int[6];
int len = ipData.Length;
int partCount = 0;
string buf = "";
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = Char.Parse(ipData.Substring(i, 1));
if (Char.IsDigit(ch))
buf += ch;
else if (ch != ',')
{
throw new IOException("Malformed PASV strReply: " + strReply);
}
if (ch == ',' || i + 1 == len)
{
try
{
parts[partCount++] = Int32.Parse(buf);
buf = "";
}
catch (Exception)
{
throw new IOException("Malformed PASV strReply: " + strReply);
}
}
}
string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3];
int port = (parts[4] << 8) + parts[5];
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(IPAddress.Parse(ipAddress), port);
try
{
s.Connect(ep);
}
catch (Exception)
{
throw new IOException("无法连接ftp服务器");
}
return s;
}

/// <summary>
/// 关闭socket连接(用于登录以前)
/// </summary>
private void CloseSocketConnect()
{
lock (obj)
{
if (socketControl != null)
{
socketControl.Close();
socketControl = null;
}
bConnected = false;
}
}

/// <summary>
/// 读取Socket返回的所有字符串
/// </summary>
/// <returns>包含应答码的字符串行</returns>
private string ReadLine()
{
lock (obj)
{
while (true)
{
int iBytes = socketControl.Receive(buffer, buffer.Length, 0);
strMsg += ASCII.GetString(buffer, 0, iBytes);
if (iBytes < buffer.Length)
{
break;
}
}
}
char[] seperator = { '\n' };
string[] mess = strMsg.Split(seperator);
if (strMsg.Length > 2)
{
strMsg = mess[mess.Length - 2];
}
else
{
strMsg = mess[0];
}
if (!strMsg.Substring(3, 1).Equals(" ")) //返回字符串正确的是以应答码(如220开头,后面接一空格,再接问候字符串)
{
return ReadLine();
}
return strMsg;
}

/// <summary>
/// 发送命令并获取应答码和最后一行应答字符串
/// </summary>
/// <param name="strCommand">命令</param>
public void SendCommand(String strCommand)
{
lock (obj)
{
Byte[] cmdBytes = Encoding.ASCII.GetBytes((strCommand + "\r\n").ToCharArray());
socketControl.Send(cmdBytes, cmdBytes.Length, 0);
Thread.Sleep(500);
ReadReply();
}
}
#endregion
}
}


FTPHelper.cs：
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;

namespace RuRo.Common.FTP
{
/// <summary>
/// FTP帮助类
/// </summary>
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();
// }
// if (line != null)
// {
// result.Remove(result.ToString().LastIndexOf("\n"), 1);
// }
// reader.Close();
// response.Close();
// return result.ToString().Split('\n');
// }
// catch (Exception ex)
// {
// throw new Exception(ex.Message);
// }
//}
public string[] GetFilesDetailList()
{
string[] downloadFiles;
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(), Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
if (line != null)
{
result.Remove(result.ToString().LastIndexOf("\n"), 1);
}
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
downloadFiles = null;
Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFilesDetailList Error --> " + ex.Message);
return downloadFiles;
}
}

/// <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 + "/";
}

/// <summary>
/// 获取当前目录下所有的文件夹列表(仅文件夹)
/// </summary>
/// <returns></returns>
public string[] GetDirectoryList()
{
string[] drectory = GetFilesDetailList();
string m = string.Empty;
foreach (string str in drectory)
{
int dirPos = str.IndexOf("<DIR>");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += str.Substring(dirPos + 5).Trim() + "\n";
}
//else if (str.Trim().Substring(0, 1).ToUpper() == "D")
//{
// /*判断 Unix 风格*/
// string dir = str.Substring(54).Trim();
// if (dir != "." && dir != "..")
// {
// m += dir + "\n";
// }
//}
}
char[] n = new char[] { '\n' };
return m.Split(n);
}
}
}

FTPOperater.cs：

using System;
using System.Text;
using System.IO;

namespace RuRo.Common.FTP
{
/// <summary>
/// FTP操作类
/// </summary>
public class FTPOperater
{
#region 属性
private FTPClient ftp;
/// <summary>
/// 全局FTP访问变量
/// </summary>
public FTPClient Ftp
{
get { return ftp; }
set { ftp = value; }
}

private string _server;
/// <summary>
/// Ftp服务器
/// </summary>
public string Server
{
get { return _server; }
set { _server = value; }
}

private string _User;
/// <summary>
/// Ftp用户
/// </summary>
public string User
{
get { return _User; }
set { _User = value; }
}

private string _Pass;
/// <summary>
/// Ftp密码
/// </summary>
public string Pass
{
get { return _Pass; }
set { _Pass = value; }
}

private string _FolderZJ;
/// <summary>
/// Ftp密码
/// </summary>
public string FolderZJ
{
get { return _FolderZJ; }
set { _FolderZJ = value; }
}

private string _FolderWX;
/// <summary>
/// Ftp密码
/// </summary>
public string FolderWX
{
get { return _FolderWX; }
set { _FolderWX = value; }
}
#endregion

/// <summary>
/// 得到文件列表
/// </summary>
/// <returns></returns>
public string[] GetList(string strPath)
{
if (ftp == null) ftp = this.getFtpClient();
ftp.Connect();
ftp.ChDir(strPath);
return ftp.Dir("*");
}

/// <summary>
/// 下载文件
/// </summary>
/// <param name="ftpFolder">ftp目录</param>
/// <param name="ftpFileName">ftp文件名</param>
/// <param name="localFolder">本地目录</param>
/// <param name="localFileName">本地文件名</param>
public bool GetFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName)
{
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
ftp.Get(ftpFileName, localFolder, localFileName);

return true;
}
catch
{
try
{
ftp.DisConnect();
ftp = null;
}
catch { ftp = null; }
return false;
}
}

/// <summary>
/// 修改文件
/// </summary>
/// <param name="ftpFolder">本地目录</param>
/// <param name="ftpFileName">本地文件名temp</param>
/// <param name="localFolder">本地目录</param>
/// <param name="localFileName">本地文件名</param>
public bool AddMSCFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName, string BscInfo)
{
string sLine = "";
string sResult = "";
string path = "获得应用程序所在的完整的路径";
path = path.Substring(0, path.LastIndexOf("\\"));
try
{
FileStream fsFile = new FileStream(ftpFolder + "\\" + ftpFileName, FileMode.Open);
FileStream fsFileWrite = new FileStream(localFolder + "\\" + localFileName, FileMode.Create);
StreamReader sr = new StreamReader(fsFile);
StreamWriter sw = new StreamWriter(fsFileWrite);
sr.BaseStream.Seek(0, SeekOrigin.Begin);
while (sr.Peek() > -1)
{
sLine = sr.ReadToEnd();
}
string[] arStr = sLine.Split(new string[] { "\n" }, StringSplitOptions.RemoveEmptyEntries);

for (int i = 0; i < arStr.Length - 1; i++)
{
sResult += BscInfo + "," + arStr[i].Trim() + "\n";
}
sr.Close();
byte[] connect = new UTF8Encoding(true).GetBytes(sResult);
fsFileWrite.Write(connect, 0, connect.Length);
fsFileWrite.Flush();
sw.Close();
fsFile.Close();
fsFileWrite.Close();
return true;
}
catch (Exception e)
{
return false;
}
}

/// <summary>
/// 删除文件
/// </summary>
/// <param name="ftpFolder">ftp目录</param>
/// <param name="ftpFileName">ftp文件名</param>
public bool DelFile(string ftpFolder, string ftpFileName)
{
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
ftp.Delete(ftpFileName);
return true;
}
catch
{
return false;
}
}

/// <summary>
/// 上传文件
/// </summary>
/// <param name="ftpFolder">ftp目录</param>
/// <param name="ftpFileName">ftp文件名</param>
public bool PutFile(string ftpFolder, string ftpFileName)
{
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
ftp.Put(ftpFileName);
return true;
}
catch
{
return false;
}
}

/// <summary>
/// 下载文件
/// </summary>
/// <param name="ftpFolder">ftp目录</param>
/// <param name="ftpFileName">ftp文件名</param>
/// <param name="localFolder">本地目录</param>
/// <param name="localFileName">本地文件名</param>
public bool GetFileNoBinary(string ftpFolder, string ftpFileName, string localFolder, string localFileName)
{
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
ftp.GetNoBinary(ftpFileName, localFolder, localFileName);
return true;
}
catch
{
try
{
ftp.DisConnect();
ftp = null;
}
catch
{
ftp = null;
}
return false;
}
}

/// <summary>
/// 得到FTP上文件信息
/// </summary>
/// <param name="ftpFolder">FTP目录</param>
/// <param name="ftpFileName">ftp文件名</param>
public string GetFileInfo(string ftpFolder, string ftpFileName)
{
string strResult = "";
try
{
if (ftp == null) ftp = this.getFtpClient();
if (ftp.Connected) ftp.DisConnect();
ftp.Connect();
ftp.ChDir(ftpFolder);
strResult = ftp.GetFileInfo(ftpFileName);
return strResult;
}
catch
{
return "";
}
}

/// <summary>
/// 测试FTP服务器是否可登陆
/// </summary>
public bool CanConnect()
{
if (ftp == null) ftp = this.getFtpClient();
try
{
ftp.Connect();
ftp.DisConnect();
return true;
}
catch
{
return false;
}
}

/// <summary>
/// 得到FTP上文件信息
/// </summary>
/// <param name="ftpFolder">FTP目录</param>
/// <param name="ftpFileName">ftp文件名</param>
public string GetFileInfoConnected(string ftpFolder, string ftpFileName)
{
string strResult = "";
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
strResult = ftp.GetFileInfo(ftpFileName);
return strResult;
}
catch
{
return "";
}
}

/// <summary>
/// 得到文件列表
/// </summary>
/// <param name="ftpFolder">FTP目录</param>
/// <returns>FTP通配符号</returns>
public string[] GetFileList(string ftpFolder, string strMask)
{
string[] strResult;
try
{
if (ftp == null) ftp = this.getFtpClient();
if (!ftp.Connected)
{
ftp.Connect();
ftp.ChDir(ftpFolder);
}
strResult = ftp.Dir(strMask);
return strResult;
}
catch
{
return null;
}
}

/// <summary>
///得到FTP传输对象
/// </summary>
public FTPClient getFtpClient()
{
FTPClient ft = new FTPClient();
ft.RemoteHost = this.Server;
ft.RemoteUser = this.User;
ft.RemotePass = this.Pass;
return ft;
}
}
}

网上抄的，有时候连接的时候会弹出各种异常，很郁闷，所以修改了helper连接的判断方式