VB与FTP编程

Option ExplicitPrivate Const INTERNET_OPEN_TYPE_DIRECT = 1Private Const scuseragent = "vb wininet"Private Const INTERNET_FLAG_PASSIVE = &H8000000'调用设置环境Private Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long'连接服务器Private Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" (ByVal hInternetSession As Long, ByVal sServerName As String, ByVal nServerPort As Integer, ByVal sUsername As String, ByVal sPassword As String, ByVal lService As Long, ByVal lFlags As Long, ByVal lContext As Long) As Long'上传涵数Private Declare Function FtpPutFile Lib "wininet.dll" Alias "FtpPutFileA" (ByVal hFtpSession As Long, ByVal lpszLocalFile As String, ByVal lpszRemoteFile As String, ByVal dwFlags As Long, ByVal dwContext As Long) As BooleanPrivate Declare Function FtpGetFile Lib "wininet.dll" Alias "FtpGetFileA" (ByVal hFtpSession As Long, ByVal lpszRemoteFile As String, ByVal lpszNewFile As String, ByVal fFailIfExists As Boolean, ByVal dwFlagsAndAttributes As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As BooleanPrivate Declare Function InternetCloseHandle Lib "wininet.dll" (ByVal hInet As Long) As IntegerDim hOpen As LongDim hConnection As Long'上传文件模块Public Function UpLoadFile(IP As String, FileName As String, UserName As String, PassWord As String) As Boolean Dim ShortName As String Dim ret As Boolean ShortName = GetShortName(FileName) hOpen = TestServer If hOpen <> 0 Then hConnection = InterConnection(IP, UserName, PassWord) If hConnection <> 0 Then ret = FtpPutFile(hConnection, FileName, ShortName, 2, 0) UpLoadFile = ret Else UpLoadFile = False End If Else UpLoadFile = False End If InternetCloseHandle hConnection InternetCloseHandle hOpenEnd Function'FTP下载文件Public Function DownLoadFile(IP As String, FileName As String, LocalFileName As String, UserName As String, PassWord As String) Dim ret As Boolean hOpen = TestServer If hOpen <> 0 Then hConnection = InterConnection(IP, UserName, PassWord) If hConnection <> 0 Then ret = FtpGetFile(hConnection, FileName, LocalFileName, 0, 0, 1, 0) DownLoadFile = ret Else DownLoadFile = False End If Else DownLoadFile = False End If InternetCloseHandle hConnection InternetCloseHandle hOpenEnd Function'调用设置环境Private Function TestServer() As Long Dim i As Long' i = InternetOpen(scuseragent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0) i = InternetOpen(vbNullString, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0) TestServer = iEnd Function'连接服务器Private Function InterConnection(IP As String, UserName As String, PassWord As String) As Long Dim i As Long i = InternetConnect(hOpen, IP, 0, UserName, PassWord, 1, INTERNET_FLAG_PASSIVE, 0) InterConnection = iEnd Function'得到文件的短文件名Private Function GetShortName(FileName As String) As String Dim stemp() As String stemp = Split(FileName, "/") If UBound(stemp) > 0 Then GetShortName = stemp(UBound(stemp)) Else GetShortName = "" End IfEnd Function

 

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