高分求能用的FTP上传续传代码

Question

只是看类，看不太明白是怎么用的。
所以希望有实际代码可以参考。
WINFORM或者WEBFORM都可以。SF那边基本都是没有上传续传的。谢谢。能用的马上结贴

Answer 1

http://www.cnblogs.com/soulroom/archive/2005/09/13/235642.html

Answer 2

http://www.codeproject.com/internet/mdftpclient1.asp

Answer 3

Asp.net(c#)实现多线程断点续传
http://www.51one.net/study/aspnet/62943.html

Answer 4

点击愚公的blog 里面有 就上面那个连接 呵呵

Answer 5

很多问题，牛人的blog里都有UP

Answer 6

到处都有，给你个例子：
using System;
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;namespace FtpLib
{ public class FTPFactory
{ private string 
remoteHost,remotePath,remoteUser,remotePass,mes;
private int remotePort,bytes;
private Socket clientSocket; private int retValue;
private Boolean debug;
private Boolean logined;
private string reply; private static int BLOCK_SIZE = 512; Byte[] buffer = new Byte[BLOCK_SIZE];
Encoding ASCII = Encoding.ASCII; public FTPFactory()
{ remoteHost  = "localhost";
remotePath  = ".";
remoteUser  = "anonymous";
remotePass  = "[email protected]";
remotePort  = 21;
debug     = false;
logined    = false; } ///
/// Set the name of the FTP server to connect to.
///
/// Server name
public void setRemoteHost(string remoteHost)
{
this.remoteHost = remoteHost;
} ///
/// Return the name of the current FTP server.
///
/// Server name
public string getRemoteHost()
{
return remoteHost;
} ///
/// Set the port number to use for FTP.
///
/// Port number
public void setRemotePort(int remotePort)
{
this.remotePort = remotePort;
} ///
/// Return the current port number.
///
/// Current port number
public int getRemotePort()
{
return remotePort;
} ///
/// Set the remote directory path.
///
/// The remote directory path
public void setRemotePath(string rmPath)
{
            //this.remotePath = remotePath.Trim();            //sendCommand("CWD " + remotePath);            //if (!(retValue == 250))
            //{
            //    throw new IOException(reply.Substring(4));
            //}
            chdir(rmPath ); } ///
/// Return the current remote directory path.
///
/// The current remote directory path.
public string getRemotePath()
{
return remotePath;
} ///
/// Set the user name to use for logging into the remote server.

///
/// Username
public void setRemoteUser(string remoteUser)
{
this.remoteUser = remoteUser;
} ///
/// Set the password to user for logging into the remote server.

///
/// Password
public void setRemotePass(string remotePass)
{
this.remotePass = remotePass;
} ///
/// Return a string array containing the remote directory's file list.

///
///
///
public string[] getFileList(string mask)
{ if(!logined)
{
login();
} Socket cSocket = createDataSocket(); sendCommand("NLST " + mask); if(!(retValue == 150 || retValue == 125))
{
                    if (reply.Trim().Length >4)
    throw new IOException(reply.Substring(4));
                    else 
                        throw new IOException(reply);
} mes = ""; while(true)
{ int bytes = cSocket.Receive(buffer, buffer.Length, 0);
mes += ASCII.GetString(buffer, 0, bytes); if(bytes < buffer.Length)
{
break;
}
} char[] seperator = {'\n'};
string[] mess = mes.Split(seperator); cSocket.Close(); readReply(); if(retValue != 226)
{
                    if (reply.Trim().Length >4)
    throw new IOException(reply.Substring(4));
                    else 
                        throw new IOException(reply); }
return mess; } ///
/// Return the size of a file.
///
///
///
public long getFileSize(string fileName)
{ if(!logined)
{
login();
} sendCommand("SIZE " + fileName);
long size=0; if(retValue == 213)
{
size = Int64.Parse(reply.Substring(4));
}
else
{
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else 
    throw new IOException(reply);
} return size; } ///
/// Login to the remote server.
///
public void login()
{ clientSocket = new 
Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
            IPEndPoint ep = new IPEndPoint(Dns.GetHostEntry(remoteHost).AddressList[0], remotePort);
                //IPEndPoint(Dns.Resolve(remoteHost).AddressList[0], remotePort);            clientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendTimeout, 3);
            clientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 3); try
{
clientSocket.Connect(ep);
}
catch(Exception)
{
throw new IOException("Couldn't connect to remote server");
            } readReply();            if (retValue == 0)
            {
                close();
                //throw new Exception ("连接未能打开！");
                return;
            } if(retValue != 220)
{
close();
                //throw new IOException(reply.Substring(4));
                return;
}
if(debug)
Console.WriteLine("USER "+remoteUser); sendCommand("USER "+remoteUser); if( !(retValue == 331 || retValue == 230) )
{
cleanup();
                //throw new IOException(reply.Substring(4));
                return;
} if( retValue != 230 )
{
if(debug)
Console.WriteLine("PASS xxx"); sendCommand("PASS "+remotePass); if( !(retValue == 230 || retValue == 202) )
{
cleanup();
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else 
                        throw new IOException(reply);
                    //return;
}
} logined = true;
Console.WriteLine("Connected to "+remoteHost); chdir(remotePath); }        public bool GetState()
{
return this.logined;
} ///
/// If the value of mode is true, set binary mode for downloads.

/// Else, set Ascii mode.
///
///
public void setBinaryMode(Boolean mode)
{ if(mode)
{
sendCommand("TYPE I");
}
else
{
sendCommand("TYPE A");
}
if (retValue != 200)
{
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else 
    throw new IOException(reply);
}
}        public void setFiles(string fname)
        {
            sendCommand("STOR d:\\pic\\config.ini");            if (retValue != 200)
            {
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else 
                    throw new IOException(reply);
            }
        }        public void DirPath()
        {
            sendCommand("LIST");
            if (!((retValue ==200) ||(retValue ==150) || (retValue ==26)))
            {
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else 
                    throw new IOException(reply);
            }
        } ///
/// Download a file to the Assembly's local directory,
/// keeping the same file name.
///
///
public void download(string remFileName)
{
download(remFileName,"",false);
}

Answer 7

///
/// Download a remote file to the Assembly's local  directory, /// keeping the same file name, and set the resume flag.
///
///
///
public void download(string remFileName,Boolean resume)
{
download(remFileName,"",resume);
} ///
/// Download a remote file to a local file name which can include

/// a path. The local file name will be created or overwritten,

/// but the path must exist.
///
///
/// public void download(string remFileName,string locFileName)
{
download(remFileName,locFileName,false);
} ///
/// Download a remote file to a local file name which can 

/// a path, and set the resume flag. The local file name will be

/// created or overwritten, but the path must exist.
/// include
///
///
///
public void download(string remFileName,string 
locFileName,Boolean resume)
{
if(!logined)
{
login();
} setBinaryMode(true); Console.WriteLine("Downloading file "+remFileName+" from "+remoteHost + "/"+remotePath); if (locFileName.Equals(""))
{
locFileName = remFileName;
} if(!File.Exists(locFileName))
{
Stream st = File.Create(locFileName);
st.Close();
} FileStream output = new 
FileStream(locFileName,FileMode.Open); Socket cSocket = createDataSocket(); long offset = 0; if(resume)
{ offset = output.Length; if(offset > 0 )
{
sendCommand("REST "+offset);
if(retValue != 350)
{
//throw new IOException(reply.Substring(4));
//Some servers may not support resuming.
offset = 0;
}
} if(offset > 0)
{
if(debug)
{
Console.WriteLine("seeking to " + offset);
}
long npos = output.Seek(offset,SeekOrigin.Begin);
Console.WriteLine("new pos="+npos);
}
} sendCommand("RETR " + remFileName); if(!(retValue == 150 || retValue == 125))
{
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else 
    throw new IOException(reply);
} while(true)
{ bytes = cSocket.Receive(buffer, buffer.Length, 0);
output.Write(buffer,0,bytes); if(bytes <= 0)
{
break;
}
} output.Close();
if (cSocket.Connected)
{
cSocket.Close();
} Console.WriteLine(""); readReply(); if( !(retValue == 226 || retValue == 250) )
{
                    if (reply.Trim().Length >4)
                        throw new IOException(reply.Substring(4));
                    else
                        throw new IOException(reply);
} } ///
/// Upload a file.
///
///
public bool upload(string fileName)
{
            //string str = "\"" + fileName + "\"";
            //return upload(str, false);
            return upload(fileName, false);
} ///
/// Upload a file and set the resume flag.
///
///
///
public bool upload(string fileName,Boolean resume)
{            try
            {
                if (!logined)
                {
                    login();
                }                Socket cSocket = createDataSocket();
                long offset = 0;                if (resume)
                {                    try
                    {                        setBinaryMode(true);
                        offset = getFileSize(fileName);                    }
                    catch (Exception)
                    {
                        offset = 0;
                    }
                }                if (offset > 0)
                {
                    sendCommand("REST " + offset);
                    if (retValue != 350)
                    {
                        //throw new IOException(reply.Substring(4));
                        //Remote server may not support resuming.
                        offset = 0;
                    }
                }
                //string strName = "\"" + fileName + "\" ";
                //string strDes = " \"" + this.remotePath + "\\" + Path.GetFileName(fileName) + "\"";                //sendCommand("STOR " + Path.GetFileName(fileName));
                //sendCommand("STOR " + strName + strDes);                //sendCommand(" STOR " + "\"" + Path.GetFileName(fileName) + "\"");
                sendCommand("STOR " + Path.GetFileName(fileName) );                if (!(retValue == 125 || retValue == 150))
                {
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else
                        throw new IOException(reply);                    //return false;
                }                // open input stream to read source file
                FileStream input = new
                    FileStream(fileName, FileMode.Open);                if (offset != 0)
                {                    if (debug)
                    {
                        Console.WriteLine("seeking to " + offset);
                    }
                    input.Seek(offset, SeekOrigin.Begin);
                }                Console.WriteLine("Uploading file  " + fileName + " to " + remotePath);                while ((bytes = input.Read(buffer, 0, buffer.Length)) > 0)
                {                    cSocket.Send(buffer, bytes, 0);                }
                input.Close();                Console.WriteLine("");                if (cSocket.Connected)
                {
                    cSocket.Close();
                }                readReply();                //sendCommand("ls " );
                if (!(retValue == 226 || retValue == 250))
                {
                    return false;
                    //throw new IOException(reply.Substring(4));
                }
            }
            catch (Exception)
            {                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);                //return false;
            }
                
            return true;
}

Answer 8

///
/// Delete a file from the remote FTP server.
///
///
public void deleteRemoteFile(string fileName)
{ if(!logined)
{
login();
} sendCommand("DELE "+fileName); if(retValue != 250)
{
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);
            } } ///
/// Rename a file on the remote FTP server.
///
///
///
public void renameRemoteFile(string oldFileName,string 
newFileName)
{ if(!logined)
{
login();
} sendCommand("RNFR "+oldFileName); if(retValue != 350)
{
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);
            } //  known problem
//  rnto will not take care of existing file.
//  i.e. It will overwrite if newFileName exist
sendCommand("RNTO "+newFileName);
if(retValue != 250)
{
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);
            } } ///
/// Create a directory on the remote FTP server.
///
///
public void mkdir(string dirName)
{ if(!logined)
{
login();
} sendCommand("MKD "+dirName); if(retValue != 250)
{
                if ((retValue != 257) && (retValue != 550))
                {
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else
                        throw new IOException(reply);                }
} } ///
/// Delete a directory on the remote FTP server.
///
///
public void rmdir(string dirName)
{ if(!logined)
{
login();
} sendCommand("RMD "+dirName); if(retValue != 250)
{
                if (reply.Trim().Length >4)
                    throw new IOException(reply.Substring(4));
                else 
    throw new IOException(reply);
} } ///
/// Change the current working directory on the remote FTP server.

///
///
public void chdir(string dirName)
{ if(dirName.Equals("."))
{
return;
} if(!logined)
{
login();
} sendCommand("CWD "+dirName); if(retValue != 250 )
{
                    if (retValue == 230)
                    {
                        sendCommand("CWD " + dirName);
                        return;
                    }
                    if (reply.Trim().Length > 4)
                        throw new IOException(reply.Substring(4));
                    else
                        if (reply.Trim().Length >0)
                            throw new IOException(reply);                } this.remotePath = dirName; Console.WriteLine("Current directory is "+remotePath); } ///
/// Close the FTP connection.
///
public void close()
{ if( clientSocket != null )
{
                chdir("/");
sendCommand("QUIT");
} cleanup();
Console.WriteLine("Closing...");
} ///
/// Set debug mode.
///
///
public void setDebug(Boolean debug)
{
this.debug = debug;
} private void readReply()
{
mes = "";
reply = readLine();
            Console.WriteLine("mes is {0}:", mes);
            if ((reply.Trim()== "999") || (reply.Trim().Length ==0))
            {
                retValue = 0;
            }
            else
            {
                retValue = Int32.Parse(reply.Substring(0, 3));
            }
} private void cleanup()
{
if(clientSocket!=null)
{
clientSocket.Close();
clientSocket = null;
}
logined = false;
} private string readLine()
{
            try
            {
                while ((true && (clientSocket != null)))
                {
                    if (clientSocket == null)
                    {
                        mes = "999";
                        return mes;
                    }
                    bytes = clientSocket.Receive(buffer, buffer.Length, 0);
                    Console.WriteLine("bytes from clientsocket received :{0},buffer lenth is {1}", 
                        bytes.ToString(),buffer.Length.ToString());                    if (bytes == 12 || bytes == 35)
                    {
                        Console.WriteLine("Pass error !");
                    }                    mes += ASCII.GetString(buffer, 0, bytes);
                    if (bytes < buffer.Length)
                    {
                        break;
                    }
                }
            }
            catch
            {
                if (clientSocket == null)
                {
                    mes = "";
                    return mes;
                }
            }            if (clientSocket == null)
            {
                mes = "";
                return mes;
            } char[] seperator = {'\n'};
string[] mess = mes.Split(seperator); if(mes.Length > 2)
{
mes = mess[mess.Length-2];
}
else
{
mes = mess[0];
}            if (mes.Trim().Length > 3)
            {
                if ((!mes.Substring(3, 1).Equals(" "))&&(!mes.Substring(3,1).Equals("-")))
                {
                    return readLine();
                }            } if(debug)
{
for(int k=0;k < mess.Length-1;k++)
{
Console.WriteLine(mess[k]);
}
}
return mes;
} private void sendCommand(String command)
{
            try
            {
                Console.WriteLine(command);
                //if (command.Trim().StartsWith("STOR"))
                //{
                //    command.Replace("\\", "");
                //    //cmdBytes =
                //    //    Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
                //    //clientSocket.Send(cmdBytes, cmdBytes.Length, 0);                //}
                //else
                //{
                //}                //Byte[] cmdBytes =
                //    Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
                Console.WriteLine("COMMAND IS NOW ******* " + command);
                Byte[] cmdBytes =
                    Encoding.Default.GetBytes((command + "\r\n").ToCharArray());
                Console.WriteLine("byte[] is : {0}", cmdBytes.ToString());
                clientSocket.Send(cmdBytes, cmdBytes.Length, 0);                readReply();
            }
            catch (Exception e)
            {
                if (clientSocket != null)
                {
                    clientSocket.Close();
                    clientSocket = null;
                }
                logined = false;
                throw new IOException(e.Message);
            } }

Answer 9

        private Socket CreateDSocketPort()
        {
            //sendCommand("PASV");
            //sendCommand("PORT");            if (retValue != 227)
            {
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);
            }            int index1 = reply.IndexOf('(');
            int index2 = reply.IndexOf(')');
            string ipData =
                reply.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 reply: " +
                        reply);
                }                if (ch == ',' || i + 1 == len)
                {                    try
                    {
                        parts[partCount++] = Int32.Parse(buf);
                        buf = "";
                    }
                    catch (Exception)
                    {
                        throw new IOException("Malformed PASV reply: " +
                            reply);
                    }
                }
            }            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(Dns.GetHostEntry(ipAddress).AddressList[0], port);
            //IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);
            try
            {
                s.Connect(ep);
            }
            catch (Exception)
            {
                throw new IOException("Can't connect to remote server");
            }            return s;
        }
private Socket createDataSocket()
{            sendCommand("PASV");
            //sendCommand("PORT"); if(retValue != 227)
{
                if (reply.Trim().Length > 4)
                    throw new IOException(reply.Substring(4));
                else
                    throw new IOException(reply);
            } int index1 = reply.IndexOf('(');
int index2 = reply.IndexOf(')');
string ipData = 
reply.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 reply: " + 
reply);
} if (ch == ',' || i+1 == len)
{ try
{
parts[partCount++] = Int32.Parse(buf);
buf="";
}
catch (Exception)
{
                        throw new IOException("Malformed PASV reply: " + 
reply);
}
}
} 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(Dns.GetHostEntry(ipAddress).AddressList[0], port);                
            //IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);
                 try
{
s.Connect(ep);
}
catch(Exception)
{
throw new IOException("Can't connect to remote server");
  } return s;
} }
}

Answer 10

/*
Following is the listing of a test program which uses this 
library
*//*File : Test.cs
Better view with tab space=4
use the following line to compile
csc.exe /t:exe /r:System.DLL /r:FTPLib.dll /out:"Test.exe" 
"Test.cs"*//*
using System;
using FtpLib;public class Test 
{ public static void Main() 
{ try 
{ Console.WriteLine("Starting..."); FTPFactory ff = new FTPFactory();
ff.setDebug(true);
ff.setRemoteHost("192.168.0.30");
ff.setRemoteUser("jaimon");
ff.setRemotePass("mathew");
ff.login();
ff.chdir("incoming"); string[] fileNames = ff.getFileList("*.*");
for(int i=0;i < fileNames.Length;i++) 
{
Console.WriteLine(fileNames[i]);
} ff.setBinaryMode(true);
ff.upload("c:\jaimon\tmp\Webdunia.ttf");
ff.close();
            G_FtpSending = false; }
catch(Exception e) 
{
Console.WriteLine("Caught Error :"+e.Message);
}
}
}
*/
/////////////////测试事例

Answer 11

另外有个问题,因为我是用1.1开发的,不知道那个FTP类库比较好用楼上的类..报错,System.Net.Dns有问题

Answer 12

to  楼上的类..报错,System.Net.Dns有问题这个是抱警告,版本低 .
我用的是.net 2.0,有新版本可以替换,不过我测试了一下,这个性能更高.如果想替换,可以用             IPEndPoint ep = new IPEndPoint(Dns.GetHostEntry(ipAddress).AddressList[0], port);
            //IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);下面屏蔽掉的语句替换上面的语句.代码都测试过,没有问题.