<% #######以下是个类文件,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() 取当前程式名称 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