FTP from Axapta

最新推荐文章于 2016-10-27 15:40:59 发布

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最新推荐文章于 2016-10-27 15:40:59 发布

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原文链接：http://www.cnblogs.com/perock/archive/2012/08/02/2619714.html

本文介绍如何在Axapta中使用DLL函数实现FTP文件上传和下载功能，并提供了具体的代码示例，包括连接FTP服务器、更改目录、上传及下载文件等步骤。

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FTP from Axapta

from Development Axapta by (Dahlsgaard Jan)

add at the class declaration of the WinInet class the following:

DLLFunction internetConnect;
DLLFunction ftpGetFile;
DLLFunction ftpPutFile;
DLLFunction setCurrentDirectory;   #localmacro.FTP_TRANSFER_TYPE_BINARY
2
#endmacro

and this in the 'new':

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);   setCurrentDirectory = new DLLFunction(winInetDLL, 'FtpSetCurrentDirectoryA');
setCurrentDirectory.returns(ExtTypes::DWord);
setCurrentDirectory.arg(ExtTypes::DWord,ExtTypes::String);

and the following methods:

int internetConnect(str 60 _server, str 99 _userName, str 99 _password )
{
    return internetConnect.call(_handle,_server,0,_userName,_password,1,0,0);
}   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 FtpSetCurrentDirectory(int _hdl, str _name)
{ 
    return setCurrentDirectory.call(_hdl, _name) != 0;
}

use the internetconnect method to connect ftp server, ftpgetfile, ftpputfile to get and put files, and ftpSetCurrentDirectory for change current diectory

[hide]

[edit]Upload File

static void TestUploadFTP(Args _args)
{
    int handle;
    WinInet inet = new WinInet();  ;   handle = inet.internetConnect("ftp.company.com","user123","password123");
    inet.FtpSetCurrentDirectory(handle,"docs");
    inet.FtpPutFile(handle,"C:/Dokumente und Einstellungen/User123/Eigene Dateien/test.txt","test.txt");
    inet.internetCloseHandle(handle);
}

[edit]Download File

static void TestUploadFTP(Args _args)
{
    int handle;
    WinInet inet = new WinInet();  ;   handle = inet.internetConnect("ftp.microsoft.com","","");
    inet.FtpSetCurrentDirectory(handle,"MISC");
    inet.FtpGetFile(handle,"CBCP.TXT","C:/Users/markus/CBCP.TXT");
    inet.internetCloseHandle(handle);  
}

[edit]Troubleshooting

Problem: Connection can be established and directory change works. Download from FTP Server doesnt work, Dynamics AX ist not responding for a while. Afterwards FtpGetFile was not successful.

Solution: Create an exception for program Ax32.exe in your Windows Firewall