Axapta中使用FTP

最新推荐文章于 2018-11-04 19:30:49 发布

原创最新推荐文章于 2018-11-04 19:30:49 发布 · 779 阅读

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文章标签：

#axapta #string #dll #buffer #command #winapi

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本文介绍如何在Axapta中通过COM对象实现FTP服务的交互，包括文件上传、下载、目录创建等功能，并提供了详细的代码示例。

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Axapta 可以方便的通过COM对象访问FTP服务，代码示例如下：

Axapta中使用FTP

final class WinInet
{
    DLL _winInet;
    DLLFunction _internetOpen;
    DLLFunction _internetCloseHandle;
    DLLFunction _internetOpenUrl;
    DLLFunction _internetReadFile;

int _handle;
int _result;

    DLLFunction _internetConnect;
    DLLFunction _ftpGetFile;
    DLLFunction _ftpPutFile;
    DLLFunction _ftpSetCurrentDirectory;
    DLLFunction _ftpCommand;
    DLLFunction _ftpFindFirstFile;
    DLLFunction _ftpDeleteFile;
    DLLFunction _ftpRenameFile;
    DLLFunction _ftpCreateDirectory;
    DLLFunction _ftpRemoveDirectory;
    DLLFunction _ftpGetCurrentDirectory;

    #define.FTP_TRANSFER_TYPE_BINARY(2)
    #define.FTP_TRANSFER_TYPE_UNKNOWN(0)
    #define.FTP_TRANSFER_TYPE_ASCII(1)

}

void finalize()
{
this.internetCloseHandle(_handle);
}

int ftpCommand(int _handler, boolean _expectResponseIn, str 255 _command)
{
    int _handlerOut;
    int _expectResponse;
    ;

    if (_expectResponseIn)
        _expectResponse = 1;
    else
        _expectResponse = 0;

    if(_ftpCommand.call(_handler, _expectResponse, #FTP_TRANSFER_TYPE_ASCII, _command, 0, _handlerOut) == 0)
        return 0;
    else
        return _handlerOut;
}

boolean ftpCreateDirectory(int _hdl, str 255 _name)
{
    if (_ftpCreateDirectory.call(_hdl, _name) == 0)
        return false;
    else
        return true;
}

boolean ftpDeleteFile(int _hdl, str 255 _file)
{
    if (_ftpDeleteFile.call(_hdl, _file) == 0)
        return false;
    else
        return true;
}

int ftpGetCurrentDirectory(int _hdl, str 255 _remoteFile, str 255 _localFile)
{
return 0;//_ftpGetCurrentDirectory.call(_hdl,_remoteFile,_localFile,false,0,#FTP_TRANSFER_TYPE_BINARY,0);
}

int ftpGetFile(int _hdl, str 255 _remoteFile, str 255 _localFile)
{
return _FtpGetFile.call(_hdl,_remoteFile,_localFile,false,0,#FTP_TRANSFER_TYPE_BINARY,0);
}

int ftpPutFile(int _hdl, str 255 _localFile, str 255 _remoteFile)
{
return _FtpPutFile.call(_hdl,_localFile,_remoteFile,#FTP_TRANSFER_TYPE_BINARY,0);
}

boolean ftpRemoveDirectory(int _hdl, str 255 _name)
{
    if (_ftpRemoveDirectory.call(_hdl, _name) == 0)
        return false;
    else
        return true;
}

boolean ftpRenameFile(int _hdl, str 255 _fileOld, str 255 _fileNew)
{
    if (_ftpRenameFile.call(_hdl, _fileOld, _fileNew) == 0)
        return false;
    else
        return true;
}

Boolean ftpSetCurrentDirectory(int _handler, str _name)
{
;

if (_handler == 0)
return false;

    if (_ftpSetCurrentDirectory.call(_handler, _name) == 0)
        return false;
    else
        return true;
}

boolean internetCloseHandle(int handle)
{
return _internetCloseHandle.call(handle);
}

int internetConnect(str 60 _server, str 99 _userName, str 99 _password )
{
return _internetConnect.call(_handle,_server,0,_userName,_password,1,0,0);
}

int internetOpen(str 255 agent,int accessType,str 255 proxyName,str 255 proxyByPass,int flags)
{

return _internetOpen.call(agent,accessType,proxyName,proxyByPass,flags);
}

int internetOpenUrl(str 500 url,int flags = 0,int context = 0)
{
    Binary _headers = new Binary(512);
    int hdl = _internetOpenUrl.call(_handle,url,"",-1,flags,context);
    return hdl;

}

str internetReadFile(int hdl)
{
    Binary _buffer = new Binary(2048);
    Binary _bytesRead = new Binary(4);
    str result;
    boolean ret;
    int done = 0;

    while (! done)
    {
        ret = _internetReadFile.call(hdl,_buffer,2000,_bytesRead);
        if ((! _bytesRead.dWord(0)) || (! ret))
            done = 1;
        else
        {
            result += subStr(_buffer.string(0),1,_bytesRead.dWord(0));
        }
    }
    return ret ? result : "";
}

#winapi
int internetSaveFile(int hdl, str _fileName)
{
    Binary _buffer = new Binary(2048);
    Binary _bytesRead = new Binary(4);
    int cnt = 0;
    boolean ret;
    DLLFunction     fileCreate;
    DLLFunction     writeFile;
    DLL             dll = new Dll(@"KERNEL32.DLL");
    int             hFile;
    ;
    if (_fileName)
    {
        fileCreate     = new DLLFunction(dll, @"CreateFileA");
        fileCreate.returns(ExtTypes::DWord);
        fileCreate.arg(ExtTypes::String,
                        ExtTypes::DWord,
                        ExtTypes::DWord,
                        ExtTypes::DWord,
                        ExtTypes::DWord,
                        ExtTypes::DWord,
                        ExtTypes::DWord);

        writeFile = new DllFunction(dll, @"WriteFile");
        writeFile.arg(ExtTypes::DWord, ExtTypes::Pointer, ExtTypes::DWord, ExtTypes::Pointer, ExtTypes::DWord);
        writeFile.returns(ExtTypes::DWord);

        hFile = fileCreate.call(_fileName, #GENERIC_WRITE, 0, 0, #CREATE_ALWAYS, 0, 0);
        while (hFile != #INVALID_HANDLE_VALUE)
        {
            ret = _internetReadFile.call(hdl,_buffer,2000,_bytesRead);
            if (ret && _bytesRead.dWord(0))
            {
                cnt += _bytesRead.dWord(0);
                writeFile.call(hFile, _buffer, _bytesRead.dWord(0), _bytesRead, 0);
            }
            else
                break;
        }
        if (hFile != #INVALID_HANDLE_VALUE)
            winapi::closeHandle(hFile);
    }
    return cnt;
}

void new()
{
    try
    {
        _winInet = new DLL("WinInet");
    }
    catch(Exception::Internal)
    {
        infolog.clear();
        return;
    }

    _internetOpen = new DLLFunction(_winInet,"InternetOpenA");
    _internetOpen.returns(ExtTypes::DWORD);
    _internetOpen.arg(ExtTypes::STRING);
    _internetOpen.arg(ExtTypes::DWORD);
    _internetOpen.arg(ExtTypes::STRING);
    _internetOpen.arg(ExtTypes::STRING);
    _internetOpen.arg(ExtTypes::DWORD);

    _internetCloseHandle = new DLLFunction(_winInet,"InternetCloseHandle");
    _internetCloseHandle.returns(ExtTypes::DWORD);
    _internetCloseHandle.arg(ExtTypes::DWORD);

    _internetOpenUrl = new DLLFunction(_winInet,"InternetOpenUrlA");
    _internetOpenUrl.returns(ExtTypes::DWORD);
    _internetOpenUrl.arg(ExtTypes::DWORD);
    _internetOpenUrl.arg(ExtTypes::STRING);
    _internetOpenUrl.arg(ExtTypes::STRING);
    _internetOpenUrl.arg(ExtTypes::DWORD);
    _internetOpenUrl.arg(ExtTypes::DWORD);
    _internetOpenUrl.arg(ExtTypes::DWORD);

    _internetReadFile = new DLLFunction(_winInet,"InternetReadFile");
    _internetReadFile.returns(ExtTypes::DWORD);
    _internetReadFile.arg(ExtTypes::DWORD);
    _internetReadFile.arg(ExtTypes::POINTER);
    _internetReadFile.arg(ExtTypes::DWORD);
    _internetReadFile.arg(ExtTypes::POINTER);

_handle = this.internetOpen("Axapta",0,"","",0);

    _internetConnect = new DLLFunction(_winInet,"InternetConnectA");
    _internetConnect.returns(ExtTypes::DWORD);
    _internetConnect.arg(ExtTypes::DWORD);
    _internetConnect.arg(ExtTypes::STRING);
    _internetConnect.arg(ExtTypes::DWORD);
    _internetConnect.arg(ExtTypes::STRING);
    _internetConnect.arg(ExtTypes::STRING);
    _internetConnect.arg(ExtTypes::DWORD);
    _internetConnect.arg(ExtTypes::DWORD);
    _internetConnect.arg(ExtTypes::DWORD);

    _ftpGetFile = new DLLFunction(_winInet,"FtpGetFileA");
    _ftpGetFile.returns(ExtTypes::DWORD);
    _ftpGetFile.arg(ExtTypes::DWORD);
    _ftpGetFile.arg(ExtTypes::STRING);
    _ftpGetFile.arg(ExtTypes::STRING);
    _ftpGetFile.arg(ExtTypes::DWORD);
    _ftpGetFile.arg(ExtTypes::DWORD);
    _ftpGetFile.arg(ExtTypes::DWORD);
    _ftpGetFile.arg(ExtTypes::DWORD);

    _ftpPutFile = new DLLFunction(_winInet,"FtpPutFileA");
    _ftpPutFile.returns(ExtTypes::DWORD);
    _ftpPutFile.arg(ExtTypes::DWORD);
    _ftpPutFile.arg(ExtTypes::STRING);
    _ftpPutFile.arg(ExtTypes::STRING);
    _ftpPutFile.arg(ExtTypes::DWORD);
    _ftpPutFile.arg(ExtTypes::DWORD);

    _ftpSetCurrentDirectory = new DLLFunction(_winInet, 'FtpSetCurrentDirectoryA');
    _ftpSetCurrentDirectory.returns(ExtTypes::DWORD);
    _ftpSetCurrentDirectory.arg(ExtTypes::DWORD);
    _ftpSetCurrentDirectory.arg(ExtTypes::STRING);

    _ftpCommand = new DLLFunction(_winInet, 'FtpCommandA');
    _ftpCommand.returns(ExtTypes::DWORD);
    _ftpCommand.arg(ExtTypes::DWORD);
    _ftpCommand.arg(ExtTypes::DWORD);
    _ftpCommand.arg(ExtTypes::DWORD);
    _ftpCommand.arg(ExtTypes::STRING);
    _ftpCommand.arg(ExtTypes::DWORD);
    _ftpCommand.arg(ExtTypes::DWORD);

    _ftpDeleteFile = new DLLFunction(_winInet, 'FtpDeleteFileA');
    _ftpDeleteFile.returns(ExtTypes::DWORD);
    _ftpDeleteFile.arg(ExtTypes::DWORD);
    _ftpDeleteFile.arg(ExtTypes::STRING);

    _ftpRenameFile = new DLLFunction(_winInet, 'FtpRenameFileA');
    _ftpRenameFile.returns(ExtTypes::DWORD);
    _ftpRenameFile.arg(ExtTypes::DWORD);
    _ftpRenameFile.arg(ExtTypes::STRING);
    _ftpRenameFile.arg(ExtTypes::STRING);

    _ftpCreateDirectory = new DLLFunction(_winInet, 'FtpCreateDirectoryA');
    _ftpCreateDirectory.returns(ExtTypes::DWORD);
    _ftpCreateDirectory.arg(ExtTypes::DWORD);
    _ftpCreateDirectory.arg(ExtTypes::STRING);

    _ftpRemoveDirectory = new DLLFunction(_winInet, 'FtpRemoveDirectoryA');
    _ftpRemoveDirectory.returns(ExtTypes::DWORD);
    _ftpRemoveDirectory.arg(ExtTypes::DWORD);
    _ftpRemoveDirectory.arg(ExtTypes::STRING);

    _ftpGetCurrentDirectory = new DLLFunction(_winInet, 'FtpGetCurrentDirectoryA');
    _ftpGetCurrentDirectory.returns(ExtTypes::DWORD);
    _ftpGetCurrentDirectory.arg(ExtTypes::DWORD);
    _ftpGetCurrentDirectory.arg(ExtTypes::STRING);
    _ftpGetCurrentDirectory.arg(ExtTypes::STRING);

    /*_ftpFindFirstFile = new DLLFunction(_winInet, 'FtpFindFirstFileA');
    _ftpFindFirstFile.returns(ExtTypes::DWORD);
    _ftpFindFirstFile.arg(ExtTypes::DWORD);
    _ftpFindFirstFile.arg(ExtTypes::STRING);*/

}

boolean ok()
{
    if (_winInet)
        return TRUE;
    else
        return FALSE;
}