asp分页的一个类
在50,000条记录下测试过，速度比ado的那个要快多了
<%
‘************************************************************************************
‘具体用法
Dim strDbPath
Dim connstr
Dim mp
Set mp = New MyPage
strDbPath = “fenye/db.mdb”
connstr = “Provider=Microsoft.Jet.OLEDB.4.0;Data Source=”
connstr = connstr & Server.MapPath(strDbPath)
Set conn = Server.CreateObject(“Adodb.Connection”)
conn.open connstr
set rs = mp.Execute(“select * from table1”,conn,29)
while not rs.eof
response.write rs(“aaaa”)&”
”
rs.MoveNext
wend
mp.pageDispaly()
‘************************************************************************************
Class MyPage
private MyPage_Conn,MyPage_StrSql,MyPage_TotalStrSql,MyPage_RS,MyPage_TotalRS
private MyPage_PageSize
private MyPage_PageAbsolute,MyPage_PageTotal,MyPage_RecordTotal
private MyPage_Url
public property let conn(strConn)
set MyPage_Conn = strConn
end property
public property let PageSize(intPageSize)
MyPage_PageSize = Cint(intPageSize)
end property
public function PageExecute(strSql)
MyPage_PageAbsolute = MyPage_PageAbsoluteRequest()
MyPage_TotalStrSql = FormatMyPage_TotalStrSql(strSql)
set MyPage_TotalRS = MyPage_Conn.execute(MyPage_TotalStrSql)
MyPage_RecordTotal = MyPage_TotalRS(“total”)
MyPage_PageTotal = Cint(MyPage_RecordTotal/MyPage_PageSize)
MyPage_StrSql = FormatMyPage_StrSql(strSql)
set MyPage_RS = MyPage_Conn.execute(MyPage_StrSql)
dim i
i = 0
while not MyPage_RS.eof and i<(MyPage_PageAbsolute-1)*MyPage_PageSize
i = i + 1
MyPage_RS.MoveNext
wend
set PageExecute = MyPage_RS
end function
public function Execute(strSql,strConn,intPageSize)
conn = strConn
PageSize = intPageSize
set Execute = PageExecute(strSql)
end function
public function pageDispaly()
MyPage_Url = ReadMyPage_Url
firstPageTag = “9” ‘|<<
LastPageTag = “:” ‘>>|
previewPageTag = “7” ‘<<
nextPageTag = “8” ‘>>
dim strAnd
if instr(MyPage_Url,”?”)=0 then
strAnd = “?”
else
strAnd = “&”
end if
response.write “
| ” response.write “页次:”&MyPage_PageAbsolute&”/”&MyPage_PageTotal&”页 ” response.write “主题数:”&MyPage_RecordTotal response.write “ | ” response.write “分页:” if MyPage_PageAbsolute>10 then response.write ““&firstPageTag&”” response.write ““&previewPageTag&”” else response.write firstPageTag response.write previewPageTag end if response.write “ ” dim CurrentStartPage,i i = 1 CurrentStartPage=(Cint(MyPage_PageAbsolute)\10)*10+1 if Cint(MyPage_PageAbsolute) mod 10=0 then CurrentStartPage = CurrentStartPage – 10 end if while i<11 and CurrentStartPage<MyPage_PageTotal+1 if CurrentStartPage < 10 then FormatCurrentStartPage = “0” & CurrentStartPage else FormatCurrentStartPage = CurrentStartPage end if response.write ““&FormatCurrentStartPage&” ” i = i + 1 CurrentStartPage = CurrentStartPage + 1 wend if MyPage_PageAbsolute<(MyPage_PageTotal-10) then response.write ““&nextPageTag&”” response.write ““&LastPageTag&”” else response.write nextPageTag response.write LastPageTag end if response.write “” response.write “ |
”
end function
public function GetPageNo()
GetPageNo = cint(MyPage_PageAbsolute)
end function
public function GetPageCount()
GetPageCount = cint(MyPage_PageTotal)
end function
public function GetPageNoName()
GetPageNoName = “MyPage_PageNo”
end function
public function GetPageSize()
GetPageSize = MyPage_PageSize
end function
public function GetRecordTotal()
GetRecordTotal = MyPage_RecordTotal
end function
private function FormatMyPage_TotalStrSql(strSql)
FormatMyPage_TotalStrSql = “select count(*) as total ”
FormatMyPage_TotalStrSql = FormatMyPage_TotalStrSql & Mid(strSql,instr(strSql,”from”))
FormatMyPage_TotalStrSql = Mid(FormatMyPage_TotalStrSql,1,instr(FormatMyPage_TotalStrSql&”order by”,”order by”)-1)
end function
private function FormatMyPage_StrSql(strSql)
FormatMyPage_StrSql = replace(strSql,”select”,”select top “&(MyPage_PageAbsolute*Cint(MyPage_PageSize)))
end function
private function MyPage_PageAbsoluteRequest()
if request(“MyPage_PageNo”)=”” then
MyPage_PageAbsoluteRequest = 1
else
if IsNumeric(request(“MyPage_PageNo”)) then
MyPage_PageAbsoluteRequest = request(“MyPage_PageNo”)
else
MyPage_PageAbsoluteRequest = 1
end if
end if
end function
private function ReadMyPage_Url()
ReadMyPage_Url = Request.ServerVariables(“URL”)
if Request.QueryString”” then
ReadMyPage_Url = ReadMyPage_Url & “?” & Request.QueryString
end if
set re = new RegExp
re.Pattern = “[&|?]MyPage_PageNo=\d+?”
re.IgnoreCase = true
re.multiLine = true
re.global = true
Set Matches = re.Execute(ReadMyPage_Url)
For Each Match in Matches
tmpMatch = Match.Value
ReadMyPage_Url = replace(ReadMyPage_Url,tmpMatch,””)
next
end function
end Class
%>