C#写的ftp上传类
这个类是我之前在一个什么地方看到的不记得了，最近要用着大文件上传，翻箱倒柜的找出来。
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace WindowsForms
{
public class FTPClient
{
#region 构造函数
///
/// 构造函数
///
///
private static FTPClient instance;
private static object lockObj = new object();
///
/// 主机地址
///
private string strRemoteHost = "";
///
/// 本地文件路径
///
private string strRemotePath = "";
///
/// FTP用户名
///
private string strRemoteUser = "";
///
/// FTP密码
///
private string strRemotePass = "";
private int strRemotePort = 21;
public FTPClient()
{ }
public static FTPClient Instance()
{
lock (lockObj)
{
if (instance == null)
{
instance = new FTPClient();
}
}
return instance;
}
///
/// 带参数的构造函数
///
/// 主机地址
/// 路径
/// 用户名
/// 密码
/// 端口
public void FTPClientPram(string remoteHost, string remotePath, string remoteUser, string remotePass, int remotePort)
{
strRemoteHost = remoteHost;
strRemotePath = remotePath;
strRemoteUser = remoteUser;
strRemotePass = remotePass;
strRemotePort = remotePort;
Connect();
}
#endregion
#region 登陆
///
/// FTP服务器IP地址
///
public string RemoteHost
{
get
{
return strRemoteHost;
}
set
{
strRemoteHost = value;
}
}
///
/// FTP服务器端口
///
public int RemotePort
{
get
{
return strRemotePort;
}
set
{
strRemotePort = value;
}
}
///
/// 当前服务器目录
///
public string RemotePath
{
get
{
return strRemotePath;
}
set
{
strRemotePath = value;
}
}
///
/// 登录用户账号
///
public string RemoteUser
{
set
{
strRemoteUser = value;
}
}
///
/// 用户登录密码
///
public string RemotePass
{
set
{
strRemotePass = value;
}
}
///
/// 是否登录
///
private Boolean bConnected;
public bool Connected
{
get
{
return bConnected;
}
}
#endregion
#region 链接
///
/// 建立连接
///
public void Connect()
{
socketControl = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort);
// 链接
try
{
socketControl.Connect(ep);
}
catch (Exception)
{
throw new IOException("Couldn't connect to remote server");
}
// 获取应答码
ReadReply();
if (iReplyCode != 220)
{
DisConnect();
throw new IOException(strReply.Substring(4));
}
// 登陆
SendCommand("USER " + strRemoteUser);
if (!(iReplyCode == 331 || iReplyCode == 230))
{
CloseSocketConnect();//关闭连接
throw new IOException(strReply.Substring(4));
}
if (iReplyCode != 230)
{
SendCommand("PASS " + strRemotePass);
if (!(iReplyCode == 230 || iReplyCode == 202))
{
CloseSocketConnect();//关闭连接
throw new IOException(strReply.Substring(4));
}
}
bConnected = true;
// 切换到目录
ChDir(strRemotePath);
}
///
/// 关闭连接
///
public void DisConnect()
{
if (socketControl != null)
{
SendCommand("bye");
SendCommand("QUIT");
}
CloseSocketConnect();
}
#endregion
#region 传输模式
///
/// 传输模式:二进制类型、ASCII类型
///
public enum TransferType
{
Binary,
ASCII
};
///
/// 设置传输模式
///
/// 传输模式
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;
}
}
///
/// 获得传输模式
///
/// 传输模式
public TransferType GetTransferType()
{
return trType;
}
#endregion
#region 文件操作
///
/// 获得文件列表
///
/// 文件名的匹配字符串
///
public string[] Dir(string strMask)
{
// 建立链接
if (!bConnected)
{
Connect();
}
//建立进行数据连接的socket
Socket socketData = CreateDataSocket();
//传送命令
SendCommand("NLST " + strMask);
//分析应答代码
if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226))
{
throw new IOException(strReply.Substring(4));
}
//获得结果
strMsg = "";
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;
}
///
/// 获取文件大小
///
/// 文件名
/// 文件大小
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;
}
///
/// 删除
///
/// 待删除文件名
public void Delete(string strFileName)
{
if (!bConnected)
{
Connect();
}
SendCommand("DELE " + strFileName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
///
/// 重命名(如果新文件名与已有文件重名,将覆盖已有文件)
///
/// 旧文件名
/// 新文件名
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
///
/// 上传一个文件
///
/// 本地文件名
public void Put(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("TYPE I");
if (iReplyCode != 200)
{
throw new IOException(strReply.Substring(4));
}
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 = 102400;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
ReadReply();
//if (!(iReplyCode == 226 || iReplyCode == 250))
//{
// ReadReply();
// if (!(iReplyCode == 226 || iReplyCode == 250))
// {
// throw new IOException(strReply.Substring(4));
// }
//}
}
#endregion
#region 目录操作
///
/// 创建目录
///
/// 目录名
public void MkDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("MKD " + strDirName);
if (iReplyCode != 257)
{
throw new IOException(strReply.Substring(4));
}
}
///
/// 删除目录
///
/// 目录名
public void RmDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RMD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
///
/// 改变目录
///
/// 新的工作目录名
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 内部变量
///
/// 服务器返回的应答信息(包含应答码)
///
private string strMsg;
///
/// 服务器返回的应答信息(包含应答码)
///
private string strReply;
///
/// 服务器返回的应答码
///
private int iReplyCode;
///
/// 进行控制连接的socket
///
private Socket socketControl;
///
/// 传输模式
///
private TransferType trType;
///
/// 接收和发送数据的缓冲区
///
private static int BLOCK_SIZE = 10240;
Byte[] buffer = new Byte[BLOCK_SIZE];
///
/// 编码方式
///
Encoding ASCII = Encoding.ASCII;
#endregion
#region 内部函数
///
/// 将一行应答字符串记录在strReply和strMsg
/// 应答码记录在iReplyCode
///
private void ReadReply()
{
strMsg = "";
strReply = ReadLine();
iReplyCode = Int32.Parse(strReply.Substring(0, 3));
}
///
/// 建立进行数据连接的socket
///
/// 数据连接socket
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("Can't connect to remote server");
}
return s;
}
///
/// 关闭socket连接(用于登录以前)
///
private void CloseSocketConnect()
{
if (socketControl != null)
{
socketControl.Close();
socketControl = null;
}
bConnected = false;
}
///
/// 读取Socket返回的所有字符串
///
/// 包含应答码的字符串行
private string ReadLine()
{
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];
//seperator[0]是10,换行符是由13和0组成的,分隔后10后面虽没有字符串,
//但也会分配为空字符串给后面(也是最后一个)字符串数组,
//所以最后一个mess是没用的空字符串
//但为什么不直接取mess[0],因为只有最后一行字符串应答码与信息之间有空格
}
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;
}
///
/// 发送命令并获取应答码和最后一行应答字符串
///
/// 命令
private void SendCommand(String strCommand)
{
Byte[] cmdBytes =
Encoding.ASCII.GetBytes((strCommand + "\r\n").ToCharArray());
socketControl.Send(cmdBytes, cmdBytes.Length, 0);
ReadReply();
}
#endregion
}
}
具体是些什么我也就不赘诉了，大家拿过去用吧，个人用了感觉还不错，用于大文件上传可以做成windows服务程序。
使用方法
FTPClient ftpClient = new FTPClient();
ftpClient.FTPClientPram("IP", "目录", "用户名", "密码", 端口);
ftpClient.SetTransferType(FTPClient.TransferType.Binary);
ftpClient.Put("d:\\1.rar");
有什么疑问直接提出来讨论！
