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以前一直没找到CFtpConnection的简单封装类，所以今天自己写了一个，供有需要的朋友使用

该类只是简单的封装，不可能达到socket来实现FTP功能的灵活和性能。

你也可以自己改造，如类里加入线程启动下载，加入上传下载通知消息等，因为我用不上，所以就不加了

使用HTTP上传下载的方法也类似，可以做为参考

使用说明：

CMyFtp ftpTest("192.168.16.63", "test", "test112", 21);

bool result = ftpTest.UploadFile("336.txt","d://111.txt");

if(!result)

AfxMessageBox(ftpTest.GetErrorMsg());

ftpTest.DownloadFile( "336.txt", "12.txt");

ftpTest.CreateRemoteDirectory("test222");

ftpTest.SetRemoteDir("test222");

ftpTest.UploadFile("113.txt","d://111.txt");

ftpTest.SetRemoteDir("//");

ftpTest.UploadFile("116.txt","d://111.txt");

.h文件

// MyFtpClient.h: interface for the CMyFtpClient class.////#include 
   
    #if !defined(AFX_MYFTPCLIENT_H__A9FC4CC7_20CE_4700_B93F_8381A3E3F5C5__INCLUDED_)#define AFX_MYFTPCLIENT_H__A9FC4CC7_20CE_4700_B93F_8381A3E3F5C5__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000class CMyFtpClient  {public:	CMyFtpClient();	CMyFtpClient(CString str_ip, CString str_user, CString str_pwd, UINT port);	virtual ~CMyFtpClient();	void setParm(CString str_ip, CString str_user, CString str_pwd, UINT port);	void setPassive(BOOL state){ m_passive = state;}//设定FTP Passive	static bool login();//登录	bool logout();//退出	//上传文件	static DWORD WINAPI UploadFile(LPVOID lpParameter);	bool UploadFileThread(CString str_remoteFileName/*远程文件名，必须是当前路径下的文件*/,		CString str_LocalFileName/*本地文件名，全路径*/);	//上传文件列表，参数参考 UploadFile	bool UploadFileList(CStringList str_remoteFileNameList, CStringList str_LocalFileList);//上传	//设置远程当前路径	bool SetRemoteDir(CString str_remoteDir);	//设置远程当前路径为根目录	bool SetRemoteRoot(){ return SetRemoteDir(_T("/"));}	//得到远程当前路径	CString GetRemoteDir(){  		m_pConnect->GetCurrentDirectory(m_remoteCurrentDir); 		return m_remoteCurrentDir; }	//创建远程目录，不会改变当前远程路径	bool CreateRemoteDir(CString str_dirName);	//删除远程目录及目录下的子文件,子文件夹	bool DelRemoteDir(CString str_dirName);	//删除远程文件	bool DelRemoteFile(CString str_FileName);	//重命名远程文件	bool RenameRemoteFile(CString str_OldFileName,CString str_NewFileName);	//下载远程文件	bool DownloadFile(CString str_remoteFileName/*远程文件名*/, CString str_LocalFileName/*本地文件名*/);	//下载远程文件列表	bool DownloadFileList(CStringList str_remoteFileNameList, CStringList str_LocalFileList);	//得到错误信息	CString GetErrorMsg();	//上传进度百分比	DWORD GetUploadFilePercent();	//上传速度 bytes/s	DWORD  GetUploadSpeed();	//下载进度百分比	DWORD GetDownloadFilePercent();	//下载速度 bytes/s	DWORD  GetDownloadSpeed();	//设定文件每次读写大小,网速越快，值设置越大	void SetFileStepSize(DWORD dSize){ m_FileLenStep = dSize*1024; }	// 取得目录下的所有文件	void GetFileInPath(LPCTSTR lpszPath, CStringArray &arrstrFile, 		BOOL bFindSubDir/* = FALSE*/,		LPCTSTR lpszFileExt);private:	static BOOL m_passive;	static CString m_errorMsg;	static BOOL m_bLogin;	CString m_remoteCurrentDir;	static CFile m_CFile;	static CInternetSession m_session;	static CFtpConnection * m_pConnect;	static CInternetFile * m_pRemoteFile;	static CString m_Ip,m_user,m_pwd;	static UINT m_port;	static DWORD m_FileLenStep;	static DWORD m_TotalUploadSize, m_TotalDownloadSize;	static DWORD m_CurUploadSize, m_CurDownloadSize;	DWORD m_UploadSpeed, m_DownloadSpeed;	void Init();	static void CloseRemoteFile();	static void SetErrorMsg();	static CString m_str_remoteFileName, m_str_LocalFileName;};#endif // !defined(AFX_MYFTP_H__A9FC4CC7_20CE_4700_B93F_8381A3E3F5C5__INCLUDED_)
   

.cpp文件

// MyFtpClient.cpp: implementation of the CMyFtpClient class.////#include "stdafx.h"#include "MyFtpClient.h"#ifdef _DEBUG#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endif//// Construction/Destruction//DWORD CMyFtpClient::m_TotalUploadSize = 0, CMyFtpClient::m_TotalDownloadSize = 0;DWORD CMyFtpClient::m_CurUploadSize = 0, CMyFtpClient::m_CurDownloadSize = 0;DWORD CMyFtpClient::m_FileLenStep = 1024*1024;CFtpConnection * CMyFtpClient::m_pConnect = NULL;CInternetFile * CMyFtpClient::m_pRemoteFile = NULL;CInternetSession CMyFtpClient::m_session;CFile CMyFtpClient::m_CFile;CString CMyFtpClient::m_str_remoteFileName = "", CMyFtpClient::m_str_LocalFileName = "";CString CMyFtpClient::m_errorMsg = "";CString CMyFtpClient::m_Ip = "", CMyFtpClient::m_user = "", CMyFtpClient::m_pwd = "";BOOL CMyFtpClient::m_passive = FALSE;BOOL CMyFtpClient::m_bLogin = FALSE;UINT CMyFtpClient::m_port = 20;CMyFtpClient::CMyFtpClient(){	Init();}CMyFtpClient::~CMyFtpClient(){	logout();}CMyFtpClient::CMyFtpClient(CString str_ip, CString str_user, CString str_pwd, UINT port){	m_Ip = str_ip;	m_user = str_user;	m_pwd = str_pwd;	m_port = port;	Init();}void CMyFtpClient::Init(){	m_pConnect = NULL;	m_pRemoteFile = NULL;	m_FileLenStep = 1024*1024;	m_CurUploadSize = m_TotalUploadSize = m_CurDownloadSize = m_TotalDownloadSize = 0;	setPassive(FALSE);}void CMyFtpClient::setParm(CString str_ip, CString str_user, CString str_pwd, UINT port){	m_Ip = str_ip;	m_user = str_user;	m_pwd = str_pwd;	m_port = port;}bool CMyFtpClient::login(){	try	{		if(m_bLogin)			return true;		//m_pConnect = m_session.GetFtpConnection( m_Ip, m_user,			//m_pwd, m_port, m_passive);		m_pConnect = m_session.GetFtpConnection( m_Ip, m_user,			m_pwd, m_port, m_passive);		if(m_pConnect == NULL)		{			SetErrorMsg();			return false;		}	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		delete m_pConnect;		m_pConnect = NULL;		m_session.Close();		return false;	}	catch (...)	{		SetErrorMsg();		delete m_pConnect;		m_pConnect = NULL;		m_session.Close();		return false;	}	m_bLogin = TRUE;	return true;}bool CMyFtpClient::logout(){	try	{		if(m_pRemoteFile)		{			m_pRemoteFile->Close();			delete m_pRemoteFile;			m_pRemoteFile = NULL;		}		if(m_pConnect)		{			m_pConnect->Close();			delete m_pConnect;			m_pConnect = NULL;		}		m_bLogin = FALSE;		//m_session.Close();	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		delete m_pRemoteFile;		m_pRemoteFile = NULL;		delete m_pConnect;		m_pConnect = NULL;		m_bLogin = FALSE;		return false;	}	catch (...)	{		SetErrorMsg();		return false;	}	m_bLogin = FALSE;	return true;}void CMyFtpClient::CloseRemoteFile(){	try	{		if(m_pRemoteFile)		{			m_pRemoteFile->Close();			delete m_pRemoteFile;			m_pRemoteFile = NULL;		}	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();	}	catch (...)	{		SetErrorMsg();	}}bool CMyFtpClient::UploadFileThread(CString str_remoteFileName, CString str_LocalFileName){	DWORD      _i;	m_str_remoteFileName = str_remoteFileName;	m_str_LocalFileName = str_LocalFileName;	m_CurUploadSize = m_TotalUploadSize = m_CurDownloadSize = m_TotalDownloadSize = 0;	::CreateThread (NULL, 0, UploadFile, this, 0,&_i);	return 1;}DWORD CMyFtpClient::UploadFile(LPVOID lpParameter){	BOOL bOpen = FALSE;	char *pBuf = NULL;	try	{		if(m_pConnect == NULL)		{			if ( !login() )			{				return false;			}		}		m_pRemoteFile =  m_pConnect->OpenFile(m_str_remoteFileName, GENERIC_WRITE);		if(m_pRemoteFile == NULL)		{			AfxMessageBox(m_str_remoteFileName + "  :远程文件创建失败");			return false;		}		bOpen = m_CFile.Open( m_str_LocalFileName , CFile::modeRead );		if(!bOpen)		{			AfxMessageBox(m_str_LocalFileName + "  :本地文件打开失败");			return false;		}		m_TotalUploadSize =  m_CFile.GetLength();		m_FileLenStep = m_FileLenStep > m_TotalUploadSize ? m_TotalUploadSize : m_FileLenStep;		DWORD dwRead = m_FileLenStep;		pBuf = new char[m_FileLenStep+1];		memset(pBuf, 0x00, m_FileLenStep+1);		while( (dwRead = m_CFile.Read(pBuf, m_FileLenStep)) > 0 )		{			m_pRemoteFile->Write( pBuf, dwRead );			m_CurUploadSize += dwRead;		}		delete pBuf;				m_CFile.Close();	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		delete pBuf;		if(bOpen)			m_CFile.Close();		return false;	}	catch (...)	{		SetErrorMsg();		delete pBuf;		if(bOpen)			m_CFile.Close();		return false;	}	CloseRemoteFile();	return true;}bool CMyFtpClient::UploadFileList(CStringList str_remoteFileNameList, CStringList str_LocalFileList){	for(int i = 0; i< str_remoteFileNameList.GetCount(); i++)	{		CString remoteFile = str_remoteFileNameList.GetAt(str_remoteFileNameList.FindIndex(i));		CString localFile = str_LocalFileList.GetAt(str_LocalFileList.FindIndex(i));		UploadFileThread( remoteFile, localFile );	}	return true;}bool CMyFtpClient::CreateRemoteDir(CString str_dirName){	try	{		if(m_pConnect == NULL)			return false;		if ( m_pConnect->CreateDirectory(str_dirName) <= 0 )			return false;		return SetRemoteDir(str_dirName);	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		return false;	}	catch (...)	{		SetErrorMsg();		return false;	}	return true;}bool CMyFtpClient::SetRemoteDir(CString str_remoteDir){ 	try	{		if(m_pConnect == NULL)			return false;		if( m_pConnect->SetCurrentDirectory( str_remoteDir) <= 0 )				return false;		m_pConnect->GetCurrentDirectory(m_remoteCurrentDir);	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		return false;	}	catch (...)	{		SetErrorMsg();		return false;	}	return true;}bool CMyFtpClient::DelRemoteDir(CString str_remoteDir/*全路径或当前路径下的文件夹*/){ _RECALL:	CFtpFileFind ftpFind(m_pConnect);	try	{		if(m_pConnect == NULL)			return false;		if(str_remoteDir.Left(1) != "/")//不是全路径		{			CString strPath;			m_pConnect->GetCurrentDirectory(strPath);			str_remoteDir = strPath + _T("/") + str_remoteDir + _T("/*");		}		SetRemoteDir(str_remoteDir);		BOOL bContinue = ftpFind.FindFile(str_remoteDir);		if (!bContinue)//是个空目录，删除		{			SetRemoteDir("..");//返回上层			m_pConnect->RemoveDirectory(str_remoteDir);//删除			goto _QUIT;		}		bContinue = ftpFind.FindFile();		if (!bContinue)//文件未找到		{			goto _QUIT;		}		do 		{			bContinue =  ftpFind.FindNextFile();			if (ftpFind.IsDirectory())			{				CString strPath = ftpFind.GetFilePath();				ftpFind.Close();				DelRemoteDir( strPath );//递归调用				SetRemoteDir("..");//返回上层				goto _RECALL;			}			else			{								DelRemoteFile(ftpFind.GetFileName());			}		}		while (bContinue);	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		goto _FAIL;	}	catch (...)	{		SetErrorMsg();		goto _FAIL;	}_QUIT:	ftpFind.Close();	return true;_FAIL:	ftpFind.Close();	return false;}bool CMyFtpClient::DelRemoteFile(CString str_FileName){ 	try	{		if(m_pConnect == NULL)			return false;		if( m_pConnect->Remove( str_FileName ) <= 0 )			return false;	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		return false;	}	catch (...)	{		SetErrorMsg();		return false;	}	return true;}bool CMyFtpClient::RenameRemoteFile(CString str_OldFileName,CString str_NewFileName){ 	try	{		if(m_pConnect == NULL)			return false;		if( m_pConnect->Rename( str_OldFileName,  str_NewFileName ) <= 0 )			return false;	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		return false;	}	catch (...)	{		SetErrorMsg();		return false;	}	return true;}bool CMyFtpClient::DownloadFile(CString str_remoteFileName, CString str_LocalFileName){	LPBYTE pBuffer = new BYTE[m_FileLenStep+1];	memset(pBuffer, 0, m_FileLenStep+1);	CFile wrireFile;	try	{		if(m_pConnect == NULL)		{			if ( !login() )			{				return false;			}		}		if( !wrireFile.Open(str_LocalFileName, CFile::modeCreate|CFile::modeWrite|CFile::typeBinary))		{			AfxMessageBox(str_LocalFileName + "  :文件创建失败");			CloseRemoteFile();			return false;		}		m_pRemoteFile =  m_pConnect->OpenFile(str_remoteFileName, GENERIC_READ);		if(m_pRemoteFile == NULL)		{			AfxMessageBox(str_remoteFileName + "  :远程文件打开失败");			return false;		}		m_TotalDownloadSize = m_pRemoteFile->GetLength();//远程文件总长度		m_FileLenStep = m_FileLenStep > m_TotalDownloadSize ? m_TotalDownloadSize : m_FileLenStep;		DWORD dRead = 0;		while( (dRead = m_pRemoteFile->Read( pBuffer, m_FileLenStep)) > 0  ) 		{			wrireFile.Write( pBuffer, dRead );			m_CurDownloadSize += dRead;		}		wrireFile.Close();	}	catch(CInternetException *pEx)	{		pEx->GetErrorMessage( m_errorMsg.GetBuffer(0), 1024 );		pEx->Delete();		wrireFile.Close();		return false;	}	catch (...)	{		SetErrorMsg();		wrireFile.Close();		return false;	}	delete pBuffer;	CloseRemoteFile();	return true;}bool CMyFtpClient::DownloadFileList(CStringList str_remoteFileNameList, CStringList str_LocalFileList){	for(int i = 0; i< str_remoteFileNameList.GetCount(); i++)	{		CString remoteFile = str_remoteFileNameList.GetAt(str_remoteFileNameList.FindIndex(i));		CString localFile = str_LocalFileList.GetAt(str_LocalFileList.FindIndex(i));		DownloadFile( remoteFile, localFile );	}	return true;}DWORD CMyFtpClient::GetUploadFilePercent(){	if(m_TotalUploadSize <=0)		return 0;	double d1,d2,d3;	d2 = m_CurUploadSize;	d3 = m_TotalUploadSize;	d1 = d2  / d3;	return d1 * 100 ;	}DWORD CMyFtpClient::GetDownloadFilePercent(){	return m_CurDownloadSize * 100 / m_TotalDownloadSize;}CString CMyFtpClient::GetErrorMsg(){	return "";	return m_errorMsg;}void CMyFtpClient::SetErrorMsg(){	return;	LPVOID lpMsgBuf; 	FormatMessage( 		FORMAT_MESSAGE_ALLOCATE_BUFFER | 		FORMAT_MESSAGE_FROM_SYSTEM | 		FORMAT_MESSAGE_IGNORE_INSERTS, 		NULL, 		GetLastError(), 		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language 		(LPTSTR) &lpMsgBuf, 		0, 		NULL 		); 	m_errorMsg.Format("%s",lpMsgBuf);	LocalFree(   lpMsgBuf   );}// 判断路径是否存在BOOL IsPathExist(LPCTSTR lpszPathName){	CString strTemp;	if(GetCurrentDirectory(MAX_PATH,strTemp.GetBuffer(MAX_PATH)) == 0 )	{		strTemp.ReleaseBuffer();		return FALSE;	}	strTemp.ReleaseBuffer(MAX_PATH);	BOOL bRes = SetCurrentDirectory(lpszPathName);	SetCurrentDirectory(strTemp.GetBuffer(MAX_PATH));	strTemp.ReleaseBuffer(MAX_PATH);	return bRes;}// 判断是否是路径BOOL IsDirPath(LPCTSTR lpszPathName){	HANDLE hFindFile;	WIN32_FIND_DATA stuFindData;	CString strName(lpszPathName);	strName  += _T("\\*");	hFindFile = FindFirstFile(strName, &stuFindData);	if (hFindFile == INVALID_HANDLE_VALUE)	return FALSE;	else	{		FindClose(hFindFile);		return TRUE;	}}// 取得目录下的所有文件void CMyFtpClient::GetFileInPath(LPCTSTR lpszPath, CStringArray &arrstrFile, 								 BOOL bFindSubDir/* = FALSE*/, LPCTSTR lpszFileExt){	if (!IsPathExist(lpszPath))	return ;	arrstrFile.RemoveAll();	WIN32_FIND_DATA		stuFindData;	HANDLE				hFindFile;	CString strName(lpszPath);	//modify by paul strName  += _T("\\*");	//strName  += _T(lpszFileExt);	strName  += _T("\\*");	hFindFile = FindFirstFile(strName, &stuFindData);	if (hFindFile == INVALID_HANDLE_VALUE)	return ;	else	{		strName = stuFindData.cFileName;		if (strName.CompareNoCase(_T(".")) != 0 && strName.CompareNoCase(_T("..")) != 0)		{			strName  = lpszPath;			strName += _T("\\");			strName += stuFindData.cFileName;			if (!IsDirPath(strName) && strName.CompareNoCase(_T(lpszFileExt)) != 0 )				arrstrFile.Add(strName);			else if (bFindSubDir)			{				CStringArray arrstrTemp;				GetFileInPath(strName, arrstrTemp, bFindSubDir,lpszFileExt);				for (int i=0; i

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