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asp access数据库操作类

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<%
''#######以下是一个类文件,下面的注解是调用类的方法################################################
''# 注意:如果系统不支持建立Scripting.FileSystemObject对象,那么数据库压缩功能将无法使用
''# Access 数据库类
''# CreateDbFile 建立一个Access 数据库文件
''# CompactDatabase 压缩一个Access 数据库文件
''# 建立对象方法:
''# Set a = New DatabaseTools
''# by (萧寒雪) s.f.
''#########################################################################################

Class DatabaseTools

Public function CreateDBfile(byVal dbFileName,byVal DbVer,byVal SavePath)
''建立数据库文件
''If DbVer is 0 Then Create Access97 dbFile
''If DbVer is 1 Then Create Access2000 dbFile
On error resume Next
If Right(SavePath,1)<>"\" or Right(SavePath,1)<>"/" Then SavePath = Trim(SavePath) & "\"
If Left(dbFileName,1)="\" or Left(dbFileName,1)="/" Then dbFileName = Trim(Mid(dbFileName,2,Len(dbFileName)))
If DbExists(SavePath & dbFileName) Then
Response.Write ("对不起,该数据库已经存在!")
CreateDBfile = False
Else
Dim Ca
Set Ca = Server.CreateObject("ADOX.Catalog")
If Err.number<>0 Then
Response.Write ("无法建立,请检查错误信息
" & Err.number & "
" & Err.Description)
Err.Clear
Exit function
End If
If DbVer=0 Then
call Ca.Create("Provider=Microsoft.Jet.OLEDB.3.51;Data Source=" & SavePath & dbFileName)
Else
call Ca.Create("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & SavePath & dbFileName)
End If
Set Ca = Nothing
CreateDBfile = True
End If
End function

Public function CompactDatabase(byVal dbFileName,byVal DbVer,byVal SavePath)
''压缩数据库文件
''0 为access 97
''1 为access 2000
On Error resume next
If Right(SavePath,1)<>"\" or Right(SavePath,1)<>"/" Then SavePath = Trim(SavePath) & "\"
If Left(dbFileName,1)="\" or Left(dbFileName,1)="/" Then dbFileName = Trim(Mid(dbFileName,2,Len(dbFileName)))
If DbExists(SavePath & dbFileName) Then
Response.Write ("对不起,该数据库已经存在!")
CompactDatabase = False
Else
Dim Cd
Set Cd =Server.CreateObject("JRO.JetEngine")
If Err.number<>0 Then
Response.Write ("无法压缩,请检查错误信息
" & Err.number & "
" & Err.Description)
Err.Clear
Exit function
End If
If DbVer=0 Then
call Cd.CompactDatabase("Provider=Microsoft.Jet.OLEDB.3.51;Data Source=" & SavePath & dbFileName,"Provider=Microsoft.Jet.OLEDB.3.51;Data
Source=" & SavePath & dbFileName & ".bak.mdb;Jet OLEDB;Encrypt Database=True")
Else
call Cd.CompactDatabase("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" &
SavePath & dbFileName,"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" &
SavePath & dbFileName & ".bak.mdb;Jet OLEDB;Encrypt Database=True")
End If
''删除旧的数据库文件
call DeleteFile(SavePath & dbFileName)
''将压缩后的数据库文件还原
call RenameFile(SavePath & dbFileName & ".bak.mdb",SavePath & dbFileName)
Set Cd = False
CompactDatabase = True
End If
end function

Public function DbExists(byVal dbPath)
''查找数据库文件是否存在
On Error resume Next
Dim c
Set c = Server.CreateObject("ADODB.Connection")
c.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & dbPath
If Err.number<>0 Then
Err.Clear
DbExists = false
else
DbExists = True
End If
set c = nothing
End function

Public function AppPath()
''取当前真实路径
AppPath = Server.MapPath("./")
End function

Public function AppName()
''取当前程序名称
AppName = Mid(Request.ServerVariables("SCRIPT_NAME"),(InStrRev(Request.ServerVariables("SCRIPT_NAME") ,"/",-1,1))+1,Len(Request.ServerVariables("SCRIPT_NAME")))
End Function

Public function DeleteFile(filespec)
''删除一个文件
Dim fso
Set fso = CreateObject("Scripting.FileSystemObject")
If Err.number<>0 Then
Response.Write("删除文件发生错误!请查看错误信息
" & Err.number & "
" & Err.Description)
Err.Clear
DeleteFile = False
End If
call fso.DeleteFile(filespec)
Set fso = Nothing
DeleteFile = True
End function

Public function RenameFile(filespec1,filespec2)
''修改一个文件
Dim fso
Set fso = CreateObject("Scripting.FileSystemObject")
If Err.number<>0 Then
Response.Write("修改文件名时发生错误!请查看错误信息
" & Err.number & "
" & Err.Description)
Err.Clear
RenameFile = False
End If
call fso.CopyFile(filespec1,filespec2,True)
call fso.DeleteFile(filespec1)
Set fso = Nothing
RenameFile = True
End function

End Class
%>

现在已可以压缩有密码的数据库,代码如下,但是压缩之后的数据库密码就没有了!如何解决?

<%
Const JET_3X = 4

Function CompactDB(dbPath, boolIs97)
Dim fso, Engine, strDBPath
strDBPath = left(dbPath,instrrev(DBPath,"\"))
Set fso = CreateObject("Scripting.FileSystemObject")

If fso.FileExists(dbPath) Then
Set Engine = CreateObject("JRO.JetEngine")

If boolIs97 = "True" Then
Engine.CompactDatabase "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & dbpath, _
"Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=''XXXXXXXX'';Data Source=" & strDBPath & "temp.mdb;" _
& "Jet OLEDB:Engine Type=" & JET_3X
Else
Engine.CompactDatabase "Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=''XXXXXXXX'';Data Source=" & dbpath, _
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDBPath & "temp.mdb"
End If

fso.CopyFile strDBPath & "temp.mdb",dbpath
fso.DeleteFile(strDBPath & "temp.mdb")
Set fso = nothing
Set Engine = nothing

CompactDB = "你的数据库, " & dbpath & ", 已经压缩成功!" & vbCrLf

Else
CompactDB = "数据库名称或路径不正确. 请重试!" & vbCrLf
End If

End Function
%>


欢迎在此留下您的脚步






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