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技术教程 -> VB教程 ->  
用vb实现ftp的上传下载
来源:转载   人气:850   录入时间:2007-11-8
     Option Explicit
   
   Public 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
   
   Public 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
   
   Public 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 Boolean
   
   Public 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 Boolean
   
   Public Declare Function FtpDeleteFile Lib "wininet.dll" Alias "FtpDeleteFileA" _
   (ByVal hFtpSession As Long, ByVal lpszFileName As String) As Boolean
   
   Public Declare Function FtpRenameFile Lib "wininet.dll" Alias "FtpRenameFileA" _
   (ByVal hFtpSession As Long, ByVal lpszExsiting As String, ByVal lpszNew As String) As Boolean
   
   Public Declare Function InternetCloseHandle Lib "wininet.dll" (ByVal hInet As Long) As Integer
   
   Public Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
   (ByVal hFtpSession As Long, ByVal lpszSearchFile As String, _
   lpFindFileData As WIN32_FIND_DATA, ByVal dwFlags As Long, _
   ByVal dwContent As Long) As Long
   
   Public Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
   (ByVal hFind As Long, lpvFndData As WIN32_FIND_DATA) As Long
   
   Public Type FILETIME
   dwLowDateTime As Long
   dwHighDateTime As Long
   End Type
   Public Type WIN32_FIND_DATA
   dwFilAttributes As Long
   ftCreationTime As FILETIME
   ftLastAccessTime As FILETIME
   ftLastWriteTime As FILETIME
   nFileSizeHigh As Long
   nFileSizeLow As Long
   dwReserved0 As Long
   dwReserved1 As Long
   cFileName As String * 260
   cAlternate As String * 14
   End Type
   
   
   Public Declare Function GetOpenFileName Lib "comdlg32.dll" Alias _
   "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
   
   Type OPENFILENAME
   lStructSize As Long
   hwndOwner As Long
   hInstance As Long
   lpstrFilter As String
   lpstrCustomFilter As String
   nMaxCustFilter As Long
   nFilterIndex As Long
   lpstrFile As String
   nMaxFile As Long
   lpstrFileTitle As String
   nMaxFileTitle As Long
   lpstrInitialDir As String
   lpstrTitle As String
   flags As Long
   nFileOffset As Integer
   nFileExtension As Integer
   lpstrDefExt As String
   lCustData As Long
   lpfnHook As Long
   lpTemplateName As String
   End Type
   Private Sub Command1_Click()
   lnginet = InternetOpen(vbNullString, INTERNET_OPEN_TYPE_PRECONFIG, _
   vbNullString, vbNullString, 0&)
   If lnginet Then
   lnginetconn = InternetConnect(lnginet, "ip地址", 0, _
   "用户名", "密码", 1, 0, 0)
   If lnginetconn Then
   blnRC = FtpGetFile(lnginetconn, "website/address.asp", "c:\address.asp", 0, 0, 1, 0)
   If blnRC Then
   MsgBox "download ok!!!"
   End If
   InternetCloseHandle lnginetconn
   InternetCloseHandle lnginet
   MsgBox "close ok!!!"
   Else
   MsgBox "can''t connect"
   End If
   Else
   MsgBox "ftp wrong"
   End If
   End Sub
   
   Private Sub Command2_Click()
   Dim pData As WIN32_FIND_DATA
   Dim lngHINet As Long
   Dim intError As Integer
   Dim strTemp As String
   Dim blnRC As Boolean
   pData.cFileName = String(260, 0)
   lnginet = InternetOpen(vbNullString, INTERNET_OPEN_TYPE_PRECONFIG, _
   vbNullString, vbNullString, 0&)
   If lnginet Then
   lnginetconn = InternetConnect(lnginet, "IP地址", 0, _
   "用户名", "密码", 1, 0, 0)
   If lnginetconn Then
   lngHINet = FtpFindFirstFile(lnginetconn, "*.*", pData, 0, 0)
   strTemp = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
   Do
   pData.cFileName = String(260, 0)
   blnRC = InternetFindNextFile(lngHINet, pData)
   If Not blnRC Then
   Exit Do
   Else
   strTemp = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
   End If
   
   Loop
   Text1.Text = strTemp
   End If
   End If
   InternetCloseHandle lngHINet
   
   InternetCloseHandle lnginetconn
   InternetCloseHandle lnginet
   
   
   End Sub
   
   




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