纯编码实现Access数据库的建立或压缩!!

纯编码实现Aclearcase/" target="_blank" >ccess数据库的建立或压缩!!

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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<br>" & Err.number & "<br>" & 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<br>" & Err.number & "<br>" & 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<br>" & Err.number & "<br>" & 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<br>" & Err.number & "<br>" & 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
%>

原文转自：http://www.ltesting.net