自己用---OpenFile-优快云博客

本文介绍了一个FTP文件同步程序的实现过程，包括目录切换、文件查找、读取及写入操作等关键步骤。通过C++代码展示了如何从远程服务器下载文件到本地。

int   FromServer   (   char   *   _pCharReadDirServer,   char   *   _pCharWriteDirLocal)
{
if   (   pObjFtpConn   ==   0   )
return   0;
pObjFtpConn->SetCurrentDirectory(   _pCharReadDirServer   );
CFtpFileFind   finder(   pObjFtpConn   );

BOOL   bHaveFile   =   finder.FindFile();
while   (   bHaveFile   )
{
bHaveFile   =   finder.FindNextFile();
CFile   objFile;
CString   strLocation(_pCharWriteDirLocal);
strLocation.Append(   finder.GetFileName()   );
if   (   !objFile.Open(   strLocation,   CFile::modeCreate   |   CFile::modeWrite   )   )
return   0;
CInternetFile   * pObjInternetFile;
/*****************************     这里出错     **********************************/
//   read
try   {
pObjInternetFile   =   pObjFtpConn->OpenFile(   finder.GetFileName(),   GENERIC_READ   );
}
catch   (   CInternetException   e   )
{return   0;}
/**************************************************************************/
char   *   pCharBuff   =   new   char[1024];
int   nBuffLng   =   pObjInternetFile->Read(   pCharBuff,   1024   );
while   (   nBuffLng   )
{
//   write   to   local   file
objFile.Write(   pCharBuff,   nBuffLng   );
          nBuffLng   =   pObjInternetFile->Read(   pCharBuff,   1024   );
}


pObjInternetFile->Close();
delete   pObjInternetFile;
//delete
pObjFtpConn->Remove(   finder.GetFileName()   );

objFile.Close();
delete   pCharBuff;
}
finder.Close();
return   1;
}