标题: Discuz!NT 2.6的FTP类
作者: dnawo
日期: 2009-03-01 03:34 AM
分类: Web编程
内容: Discuz!NT 2.6带了一个FTP类，位于Discuz.Common\FTP.cs，使用它可以非常的方便的进行文件上传、下载操作以及其他常规文件(夹)操作。下边为该FTP类完整内容：
复制内容到剪贴板 程序代码using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;
namespace Discuz.Common
{
/// <summary>
/// FTP类
/// </summary>
public class FTP
{
#region 变量声明
/// <summary>
/// 服务器连接地址
/// </summary>
public string server;
/// <summary>
/// 登陆帐号
/// </summary>
public string user;
/// <summary>
/// 登陆口令
/// </summary>
public string pass;
/// <summary>
/// 端口号
/// </summary>
public int port;
/// <summary>
/// 无响应时间（FTP在指定时间内无响应）
/// </summary>
public int timeout;
/// <summary>
/// 服务器错误状态信息
/// </summary>
public string errormessage;
/// <summary>
/// 服务器状态返回信息
/// </summary>
private string messages;
/// <summary>
/// 服务器的响应信息
/// </summary>
private string responseStr;
/// <summary>
/// 链接模式（主动或被动，默认为被动）
/// </summary>
private bool passive_mode;
/// <summary>
/// 上传或下载信息字节数
/// </summary>
private long bytes_total;
/// <summary>
/// 上传或下载的文件大小
/// </summary>
private long file_size;
/// <summary>
/// 主套接字
/// </summary>
private Socket main_sock;
/// <summary>
/// 要链接的网络地址终结点
/// </summary>
private IPEndPoint main_ipEndPoint;
/// <summary>
/// 侦听套接字
/// </summary>
private Socket listening_sock;
/// <summary>
/// 数据套接字
/// </summary>
private Socket data_sock;
/// <summary>
/// 要链接的网络数据地址终结点
/// </summary>
private IPEndPoint data_ipEndPoint;
/// <summary>
/// 用于上传或下载的文件流对象
/// </summary>
private FileStream file;
/// <summary>
/// 与FTP服务器交互的状态值
/// </summary>
private int response;
/// <summary>
/// 读取并保存当前命令执行后从FTP服务器端返回的数据信息
/// </summary>
private string bucket;
#endregion
#region 构造函数
/// <summary>
/// 构造函数
/// </summary>
public FTP()
{
server = null;
user = null;
pass = null;
port = 21;
passive_mode = true;
main_sock = null;
main_ipEndPoint = null;
listening_sock = null;
data_sock = null;
data_ipEndPoint = null;
file = null;
bucket = "";
bytes_total = 0;
timeout = 10000; //无响应时间为10秒
messages = "";
errormessage = "";
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="server">服务器IP或名称</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
public FTP(string server, string user, string pass)
{
this.server = server;
this.user = user;
this.pass = pass;
port = 21;
passive_mode = true;
main_sock = null;
main_ipEndPoint = null;
listening_sock = null;
data_sock = null;
data_ipEndPoint = null;
file = null;
bucket = "";
bytes_total = 0;
timeout = 10000; //无响应时间为10秒
messages = "";
errormessage = "";
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="server">服务器IP或名称</param>
/// <param name="port">端口号</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
public FTP(string server, int port, string user, string pass)
{
this.server = server;
this.user = user;
this.pass = pass;
this.port = port;
passive_mode = true;
main_sock = null;
main_ipEndPoint = null;
listening_sock = null;
data_sock = null;
data_ipEndPoint = null;
file = null;
bucket = "";
bytes_total = 0;
timeout = 10000; //无响应时间为10秒
messages = "";
errormessage = "";
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="server">服务器IP或名称</param>
/// <param name="port">端口号</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
/// <param name="mode">链接方式</param>
public FTP(string server, int port, string user, string pass, int mode)
{
this.server = server;
this.user = user;
this.pass = pass;
this.port = port;
passive_mode = mode <= 1 ? true : false;
main_sock = null;
main_ipEndPoint = null;
listening_sock = null;
data_sock = null;
data_ipEndPoint = null;
file = null;
bucket = "";
bytes_total = 0;
this.timeout = 10000; //无响应时间为10秒
messages = "";
errormessage = "";
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="server">服务器IP或名称</param>
/// <param name="port">端口号</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
/// <param name="mode">链接方式</param>
/// <param name="timeout">无响应时间(限时),单位:秒 (小于或等于0为不受时间限制)</param>
public FTP(string server, int port, string user, string pass, int mode, int timeout_sec)
{
this.server = server;
this.user = user;
this.pass = pass;
this.port = port;
passive_mode = mode <= 1 ? true : false;
main_sock = null;
main_ipEndPoint = null;
listening_sock = null;
data_sock = null;
data_ipEndPoint = null;
file = null;
bucket = "";
bytes_total = 0;
this.timeout = (timeout_sec <= 0) ? int.MaxValue : (timeout_sec * 1000); //无响应时间
messages = "";
errormessage = "";
}
#endregion
#region 属性
/// <summary>
/// 当前是否已连接
/// </summary>
public bool IsConnected
{
get
{
if (main_sock != null)
return main_sock.Connected;
return false;
}
}
/// <summary>
/// 当message缓冲区有数据则返回
/// </summary>
public bool MessagesAvailable
{
get
{
if (messages.Length > 0)
return true;
return false;
}
}
/// <summary>
/// 获取服务器状态返回信息, 并清空messages变量
/// </summary>
public string Messages
{
get
{
string tmp = messages;
messages = "";
return tmp;
}
}
/// <summary>
/// 最新指令发出后服务器的响应
/// </summary>
public string ResponseString
{
get
{
return responseStr;
}
}
/// <summary>
///在一次传输中,发送或接收的字节数
/// </summary>
public long BytesTotal
{
get
{
return bytes_total;
}
}
/// <summary>
///被下载或上传的文件大小,当文件大小无效时为0
/// </summary>
public long FileSize
{
get
{
return file_size;
}
}
/// <summary>
/// 链接模式:
/// true 被动模式 [默认]
/// false: 主动模式
/// </summary>
public bool PassiveMode
{
get
{
return passive_mode;
}
set
{
passive_mode = value;
}
}
#endregion
#region 操作
/// <summary>
/// 操作失败
/// </summary>
private void Fail()
{
Disconnect();
errormessage += responseStr;
//throw new Exception(responseStr);
}
/// <summary>
/// 下载文件类型
/// </summary>
/// <param name="mode">true:二进制文件 false:字符文件</param>
private void SetBinaryMode(bool mode)
{
if (mode)
SendCommand("TYPE I");
else
SendCommand("TYPE A");
ReadResponse();
if (response != 200)
Fail();
}
/// <summary>
/// 发送命令
/// </summary>
/// <param name="command"></param>
private void SendCommand(string command)
{
Byte[] cmd = Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
if (command.Length > 3 && command.Substring(0, 4) == "PASS")
{
messages = "\rPASS xxx";
}
else
{
messages = "\r" + command;
}
try
{
main_sock.Send(cmd, cmd.Length, 0);
}
catch (Exception ex)
{
try
{
Disconnect();
errormessage += ex.Message;
return;
}
catch
{
main_sock.Close();
file.Close();
main_sock = null;
main_ipEndPoint = null;
file = null;
}
}
}
private void FillBucket()
{
Byte[] bytes = new Byte[512];
long bytesgot;
int msecs_passed = 0;
while (main_sock.Available < 1)
{
System.Threading.Thread.Sleep(50);
msecs_passed += 50;
//当等待时间到,则断开链接
if (msecs_passed > timeout)
{
Disconnect();
errormessage += "Timed out waiting on server to respond.";
return;
}
}
while (main_sock.Available > 0)
{
bytesgot = main_sock.Receive(bytes, 512, 0);
bucket += Encoding.ASCII.GetString(bytes, 0, (int)bytesgot);
System.Threading.Thread.Sleep(50);
}
}
private string GetLineFromBucket()
{
int i;
string buf = "";
if ((i = bucket.IndexOf('\n')) < 0)
{
while (i < 0)
{
FillBucket();
i = bucket.IndexOf('\n');
}
}
buf = bucket.Substring(0, i);
bucket = bucket.Substring(i + 1);
return buf;
}
/// <summary>
/// 返回服务器端返回信息
/// </summary>
private void ReadResponse()
{
string buf;
messages = "";
while (true)
{
buf = GetLineFromBucket();
if (Regex.Match(buf, "^[0-9]+ ").Success)
{
responseStr = buf;
response = int.Parse(buf.Substring(0, 3));
break;
}
else
messages += Regex.Replace(buf, "^[0-9]+-", "") + "\n";
}
}
/// <summary>
/// 打开数据套接字
/// </summary>
private void OpenDataSocket()
{
if (passive_mode)
{
string[] pasv;
string server;
int port;
Connect();
SendCommand("PASV");
ReadResponse();
if (response != 227)
Fail();
try
{
int i1, i2;
i1 = responseStr.IndexOf('(') + 1;
i2 = responseStr.IndexOf(')') - i1;
pasv = responseStr.Substring(i1, i2).Split(',');
}
catch (Exception)
{
Disconnect();
errormessage += "Malformed PASV response: " + responseStr;
return ;
}
if (pasv.Length < 6)
{
Disconnect();
errormessage += "Malformed PASV response: " + responseStr;
return ;
}
server = String.Format("{0}.{1}.{2}.{3}", pasv[0], pasv[1], pasv[2], pasv[3]);
port = (int.Parse(pasv[4]) << 8) + int.Parse(pasv[5]);
try
{
CloseDataSocket();
data_sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
#if NET1
data_ipEndPoint = new IPEndPoint(Dns.GetHostByName(server).AddressList[0], port);
#else
data_ipEndPoint = new IPEndPoint(System.Net.Dns.GetHostEntry(server).AddressList[0], port);
#endif
data_sock.Connect(data_ipEndPoint);
}
catch (Exception ex)
{
errormessage += "Failed to connect for data transfer: " + ex.Message;
return ;
}
}
else
{
Connect();
try
{
CloseDataSocket();
listening_sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// 对于端口,则发送IP地址.下面则提取相应信息
string sLocAddr = main_sock.LocalEndPoint.ToString();
int ix = sLocAddr.IndexOf(':');
if (ix < 0)
{
errormessage += "Failed to parse the local address: " + sLocAddr;
return;
}
string sIPAddr = sLocAddr.Substring(0, ix);
// 系统自动绑定一个端口号(设置 port = 0)
System.Net.IPEndPoint localEP = new IPEndPoint(IPAddress.Parse(sIPAddr), 0);
listening_sock.Bind(localEP);
sLocAddr = listening_sock.LocalEndPoint.ToString();
ix = sLocAddr.IndexOf(':');
if (ix < 0)
{
errormessage += "Failed to parse the local address: " + sLocAddr;
}
int nPort = int.Parse(sLocAddr.Substring(ix + 1));
// 开始侦听链接请求
listening_sock.Listen(1);
string sPortCmd = string.Format("PORT {0},{1},{2}",
sIPAddr.Replace('.', ','),
nPort / 256, nPort % 256);
SendCommand(sPortCmd);
ReadResponse();
if (response != 200)
Fail();
}
catch (Exception ex)
{
errormessage += "Failed to connect for data transfer: " + ex.Message;
return;
}
}
}
private void ConnectDataSocket()
{
if (data_sock != null) // 已链接
return;
try
{
data_sock = listening_sock.Accept(); // Accept is blocking
listening_sock.Close();
listening_sock = null;
if (data_sock == null)
{
throw new Exception("Winsock error: " +
Convert.ToString(System.Runtime.InteropServices.Marshal.GetLastWin32Error()));
}
}
catch (Exception ex)
{
errormessage += "Failed to connect for data transfer: " + ex.Message;
}
}
private void CloseDataSocket()
{
if (data_sock != null)
{
if (data_sock.Connected)
{
data_sock.Close();
}
data_sock = null;
}
data_ipEndPoint = null;
}
/// <summary>
/// 关闭所有链接
/// </summary>
public void Disconnect()
{
CloseDataSocket();
if (main_sock != null)
{
if (main_sock.Connected)
{
SendCommand("QUIT");
main_sock.Close();
}
main_sock = null;
}
if (file != null)
file.Close();
main_ipEndPoint = null;
file = null;
}
/// <summary>
/// 链接到FTP服务器
/// </summary>
/// <param name="server">要链接的IP地址或主机名</param>
/// <param name="port">端口号</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
public void Connect(string server, int port, string user, string pass)
{
this.server = server;
this.user = user;
this.pass = pass;
this.port = port;
Connect();
}
/// <summary>
/// 链接到FTP服务器
/// </summary>
/// <param name="server">要链接的IP地址或主机名</param>
/// <param name="user">登陆帐号</param>
/// <param name="pass">登陆口令</param>
public void Connect(string server, string user, string pass)
{
this.server = server;
this.user = user;
this.pass = pass;
Connect();
}
/// <summary>
/// 链接到FTP服务器
/// </summary>
public bool Connect()
{
if (server == null)
{
errormessage += "No server has been set.\r\n";
}
if (user == null)
{
errormessage += "No server has been set.\r\n";
}
if (main_sock != null)
if (main_sock.Connected)
return true;
try
{
main_sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
#if NET1
main_ipEndPoint = new IPEndPoint(Dns.GetHostByName(server).AddressList[0], port);
#else
main_ipEndPoint = new IPEndPoint(System.Net.Dns.GetHostEntry(server).AddressList[0], port);
#endif
main_sock.Connect(main_ipEndPoint);
}
catch (Exception ex)
{
errormessage += ex.Message;
return false;
}
ReadResponse();
if (response != 220)
Fail();
SendCommand("USER " + user);
ReadResponse();
switch (response)
{
case 331:
if (pass == null)
{
Disconnect();
errormessage += "No password has been set.";
return false;
}
SendCommand("PASS " + pass);
ReadResponse();
if (response != 230)
{
Fail();
return false;
}
break;
case 230:
break;
}
return true;
}
/// <summary>
/// 获取FTP当前(工作)目录下的文件列表
/// </summary>
/// <returns>返回文件列表数组</returns>
public ArrayList List()
{
Byte[] bytes = new Byte[512];
string file_list = "";
long bytesgot = 0;
int msecs_passed = 0;
ArrayList list = new ArrayList();
Connect();
OpenDataSocket();
SendCommand("LIST");
ReadResponse();
switch (response)
{
case 125:
case 150:
break;
default:
CloseDataSocket();
throw new Exception(responseStr);
}
ConnectDataSocket();
while (data_sock.Available < 1)
{
System.Threading.Thread.Sleep(50);
msecs_passed += 50;
if (msecs_passed > (timeout / 10))
{
break;
}
}
while (data_sock.Available > 0)
{
bytesgot = data_sock.Receive(bytes, bytes.Length, 0);
file_list += Encoding.ASCII.GetString(bytes, 0, (int)bytesgot);
System.Threading.Thread.Sleep(50);
}
CloseDataSocket();
ReadResponse();
if (response != 226)
throw new Exception(responseStr);
foreach (string f in file_list.Split('\n'))
{
if (f.Length > 0 && !Regex.Match(f, "^total").Success)
list.Add(f.Substring(0, f.Length - 1));
}
return list;
}
/// <summary>
/// 获取到文件名列表
/// </summary>
/// <returns>返回文件名列表</returns>
public ArrayList ListFiles()
{
ArrayList list = new ArrayList();
foreach (string f in List())
{
if ((f.Length > 0))
{
if ((f[0] != 'd') && (f.ToUpper().IndexOf("<DIR>") < 0))
list.Add(f);
}
}
return list;
}
/// <summary>
/// 获取路径列表
/// </summary>
/// <returns>返回路径列表</returns>
public ArrayList ListDirectories()
{
ArrayList list = new ArrayList();
foreach (string f in List())
{
if (f.Length > 0)
{
if ((f[0] == 'd') || (f.ToUpper().IndexOf("<DIR>") >= 0))
list.Add(f);
}
}
return list;
}
/// <summary>
/// 获取原始数据信息.
/// </summary>
/// <param name="fileName">远程文件名</param>
/// <returns>返回原始数据信息.</returns>
public string GetFileDateRaw(string fileName)
{
Connect();
SendCommand("MDTM " + fileName);
ReadResponse();
if (response != 213)
{
errormessage += responseStr;
return "";
}
return (this.responseStr.Substring(4));
}
/// <summary>
/// 得到文件日期.
/// </summary>
/// <param name="fileName">远程文件名</param>
/// <returns>返回远程文件日期</returns>
public DateTime GetFileDate(string fileName)
{
return ConvertFTPDateToDateTime(GetFileDateRaw(fileName));
}
private DateTime ConvertFTPDateToDateTime(string input)
{
if (input.Length < 14)
throw new ArgumentException("Input Value for ConvertFTPDateToDateTime method was too short.");
//YYYYMMDDhhmmss":
int year = Convert.ToInt16(input.Substring(0, 4));
int month = Convert.ToInt16(input.Substring(4, 2));
int day = Convert.ToInt16(input.Substring(6, 2));
int hour = Convert.ToInt16(input.Substring(8, 2));
int min = Convert.ToInt16(input.Substring(10, 2));
int sec = Convert.ToInt16(input.Substring(12, 2));
return new DateTime(year, month, day, hour, min, sec);
}
/// <summary>
/// 获取FTP上的当前(工作)路径
/// </summary>
/// <returns>返回FTP上的当前(工作)路径</returns>
public string GetWorkingDirectory()
{
//PWD - 显示工作路径
Connect();
SendCommand("PWD");
ReadResponse();
if (response != 257)
{
errormessage += responseStr;
}
string pwd;
try
{
pwd = responseStr.Substring(responseStr.IndexOf("\"", 0) + 1);//5);
pwd = pwd.Substring(0, pwd.LastIndexOf("\""));
pwd = pwd.Replace("\"\"", "\""); // 替换带引号的路径信息符号
}
catch (Exception ex)
{
errormessage += ex.Message;
return null;
}
return pwd;
}
/// <summary>
/// 跳转服务器上的当前(工作)路径
/// </summary>
/// <param name="path">要跳转的路径</param>
public bool ChangeDir(string path)
{
Connect();
SendCommand("CWD " + path);
ReadResponse();
if (response != 250)
{
errormessage += responseStr;
return false;
}
return true;
}
/// <summary>
/// 创建指定的目录
/// </summary>
/// <param name="dir">要创建的目录</param>
public void MakeDir(string dir)
{
Connect();
SendCommand("MKD " + dir);
ReadResponse();
switch (response)
{
case 257:
case 250:
break;
default:
{
errormessage += responseStr;
break;
}
}
}
/// <summary>
/// 移除FTP上的指定目录
/// </summary>
/// <param name="dir">要移除的目录</param>
public void RemoveDir(string dir)
{
Connect();
SendCommand("RMD " + dir);
ReadResponse();
if (response != 250)
{
errormessage += responseStr;
return; ;
}
}
/// <summary>
/// 移除FTP上的指定文件
/// </summary>
/// <param name="filename">要移除的文件名称</param>
public void RemoveFile(string filename)
{
Connect();
SendCommand("DELE " + filename);
ReadResponse();
if (response != 250)
{
errormessage += responseStr;
}
}
/// <summary>
/// 重命名FTP上的文件
/// </summary>
/// <param name="oldfilename">原文件名</param>
/// <param name="newfilename">新文件名</param>
public void RenameFile(string oldfilename, string newfilename)
{
Connect();
SendCommand("RNFR " + oldfilename);
ReadResponse();
if (response != 350)
{
errormessage += responseStr;
}
else
{
SendCommand("RNTO " + newfilename);
ReadResponse();
if (response != 250)
{
errormessage += responseStr;
}
}
}
/// <summary>
/// 获得指定文件的大小(如果FTP支持)
/// </summary>
/// <param name="filename">指定的文件</param>
/// <returns>返回指定文件的大小</returns>
public long GetFileSize(string filename)
{
Connect();
SendCommand("SIZE " + filename);
ReadResponse();
if (response != 213)
{
errormessage += responseStr;
}
return Int64.Parse(responseStr.Substring(4));
}
/// <summary>
/// 上传指定的文件
/// </summary>
/// <param name="filename">要上传的文件</param>
public bool OpenUpload(string filename)
{
return OpenUpload(filename, filename, false);
}
/// <summary>
/// 上传指定的文件
/// </summary>
/// <param name="filename">本地文件名</param>
/// <param name="remotefilename">远程要覆盖的文件名</param>
public bool OpenUpload(string filename, string remotefilename)
{
return OpenUpload(filename, remotefilename, false);
}
/// <summary>
/// 上传指定的文件
/// </summary>
/// <param name="filename">本地文件名</param>
/// <param name="resume">如果存在,则尝试恢复</param>
public bool OpenUpload(string filename, bool resume)
{
return OpenUpload(filename, filename, resume);
}
/// <summary>
/// 上传指定的文件
/// </summary>
/// <param name="filename">本地文件名</param>
/// <param name="remote_filename">远程要覆盖的文件名</param>
/// <param name="resume">如果存在,则尝试恢复</param>
public bool OpenUpload(string filename, string remote_filename, bool resume)
{
Connect();
SetBinaryMode(true);
OpenDataSocket();
bytes_total = 0;
try
{
file = new FileStream(filename, FileMode.Open);
}
catch (Exception ex)
{
file = null;
errormessage += ex.Message;
return false;
}
file_size = file.Length;
if (resume)
{
long size = GetFileSize(remote_filename);
SendCommand("REST " + size);
ReadResponse();
if (response == 350)
file.Seek(size, SeekOrigin.Begin);
}
SendCommand("STOR " + remote_filename);
ReadResponse();
switch (response)
{
case 125:
case 150:
break;
default:
file.Close();
file = null;
errormessage += responseStr;
return false;
}
ConnectDataSocket();
return true;
}
/// <summary>
/// 下载指定文件
/// </summary>
/// <param name="filename">远程文件名称</param>
public void OpenDownload(string filename)
{
OpenDownload(filename, filename, false);
}
/// <summary>
/// 下载并恢复指定文件
/// </summary>
/// <param name="filename">远程文件名称</param>
/// <param name="resume">如文件存在,则尝试恢复</param>
public void OpenDownload(string filename, bool resume)
{
OpenDownload(filename, filename, resume);
}
/// <summary>
/// 下载指定文件
/// </summary>
/// <param name="filename">远程文件名称</param>
/// <param name="localfilename">本地文件名</param>
public void OpenDownload(string remote_filename, string localfilename)
{
OpenDownload(remote_filename, localfilename, false);
}
/// <summary>
/// 打开并下载文件
/// </summary>
/// <param name="remote_filename">远程文件名称</param>
/// <param name="local_filename">本地文件名</param>
/// <param name="resume">如果文件存在则恢复</param>
public void OpenDownload(string remote_filename, string local_filename, bool resume)
{
Connect();
SetBinaryMode(true);
bytes_total = 0;
try
{
file_size = GetFileSize(remote_filename);
}
catch
{
file_size = 0;
}
if (resume && File.Exists(local_filename))
{
try
{
file = new FileStream(local_filename, FileMode.Open);
}
catch (Exception ex)
{
file = null;
throw new Exception(ex.Message);
}
SendCommand("REST " + file.Length);
ReadResponse();
if (response != 350)
throw new Exception(responseStr);
file.Seek(file.Length, SeekOrigin.Begin);
bytes_total = file.Length;
}
else
{
try
{
file = new FileStream(local_filename, FileMode.Create);
}
catch (Exception ex)
{
file = null;
throw new Exception(ex.Message);
}
}
OpenDataSocket();
SendCommand("RETR " + remote_filename);
ReadResponse();
switch (response)
{
case 125:
case 150:
break;
default:
file.Close();
file = null;
errormessage += responseStr;
return;
}
ConnectDataSocket();
return;
}
/// <summary>
/// 上传文件(循环调用直到上传完毕)
/// </summary>
/// <returns>发送的字节数</returns>
public long DoUpload()
{
Byte[] bytes = new Byte[512];
long bytes_got;
try
{
bytes_got = file.Read(bytes, 0, bytes.Length);
bytes_total += bytes_got;
data_sock.Send(bytes, (int)bytes_got, 0);
if (bytes_got <= 0)
{
//上传完毕或有错误发生
file.Close();
file = null;
CloseDataSocket();
ReadResponse();
switch (response)
{
case 226:
case 250:
break;
default: //当上传中断时
{
errormessage += responseStr;
return -1;
}
}
SetBinaryMode(false);
}
}
catch (Exception ex)
{
file.Close();
file = null;
CloseDataSocket();
ReadResponse();
SetBinaryMode(false);
//throw ex;
//当上传中断时
errormessage += ex.Message;
return -1;
}
return bytes_got;
}
/// <summary>
/// 下载文件(循环调用直到下载完毕)
/// </summary>
/// <returns>接收到的字节点</returns>
public long DoDownload()
{
Byte[] bytes = new Byte[512];
long bytes_got;
try
{
bytes_got = data_sock.Receive(bytes, bytes.Length, 0);
if (bytes_got <= 0)
{
//下载完毕或有错误发生
CloseDataSocket();
file.Close();
file = null;
ReadResponse();
switch (response)
{
case 226:
case 250:
break;
default:
{
errormessage += responseStr;
return -1;
}
}
SetBinaryMode(false);
return bytes_got;
}
file.Write(bytes, 0, (int)bytes_got);
bytes_total += bytes_got;
}
catch (Exception ex)
{
CloseDataSocket();
file.Close();
file = null;
ReadResponse();
SetBinaryMode(false);
//throw ex;
//当下载中断时
errormessage += ex.Message;
return -1;
}
return bytes_got;
}
#endregion
}
}
简单使用示例：
复制内容到剪贴板 程序代码FTP ftp = new FTP("127.0.0.1", "abc", "123456");
//建立文件夹
ftp.MakeDir("com");
ftp.ChangeDir("com");
ftp.MakeDir("mzwu");
ftp.ChangeDir("mzwu");
//文件夹列表
ArrayList list = ftp.ListDirectories();
for (int i = 0; i < list.Count; i++)
{
Response.Write(list[i].ToString() + "<br/>");
}
//删除文件夹(不能直接删除非空文件夹)
ftp.RemoveDir("com\\mzwu");
//上传文件
if (ftp.Connect())
{
if (ftp.OpenUpload(@"F:\mzwucom.jpg", Path.GetFileName(@"F:\mzwucom.jpg")))
{
while (ftp.DoUpload() > 0)
{
int perc = (int)(((ftp.BytesTotal) * 100) / ftp.FileSize);
Response.Write(perc.ToString() + "%<br/>");
Response.Flush();
}
ftp.Disconnect();
}
}
//下载文件
if (ftp.Connect())
{
ftp.OpenDownload("mzwucom.jpg", @"E:\mzwucom.jpg");
while (ftp.DoDownload() > 0)
{
int perc = (int)(((ftp.BytesTotal) * 100) / ftp.FileSize);
Response.Write(perc.ToString() + "%<br/>");
Response.Flush();
}
ftp.Disconnect();
}
//文件列表
ArrayList list = ftp.ListFiles();
for (int i = 0; i < list.Count; i++)
{
Response.Write(list[i].ToString() + "<br/>");
}
//文件重命名
ftp.RenameFile("mzwucom.jpg", "test.jpg");
//删除文件
ftp.RemoveFile("test.jpg");
//显示错误信息
Response.Write(ftp.errormessage);
参考文章
Discuz!NT中远程附件的功能实现[FTP协议]：http://www.cnblogs.com/daizhj/archive/2008/07/28/1254648.html
+ 查看当前日志评论 (2)
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评论内容:
== dnawo 2010-09-02 03:15 PM ----
测试了下，上传到服务器保存文件名为中文或是下载服务器上文件名为中文的文件时都有问题，主要还是编码的问题，这个问题在Discuz!NT 3.1的FTP类中仍存在，目前还没改好的方案-_-
== linjia 2010-08-30 02:53 PM ----
上传文件，使用 保存为 中文名称 时会报错！
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