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")&"<br>"
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 = "<font face=webdings>9</font>" '|<<
lastpagetag = "<font face=webdings>:</font>" '>>|
previewpagetag = "<font face=webdings>7</font>" '<<
nextpagetag = "<font face=webdings>8</font>" '>>
dim strand
if instr(mypage_url,"?")=0 then
strand = "?"
else
strand = "&"
end if
response.write "<table width=100% border=0 cellspacing=0 cellpadding=0>"
response.write "<tr>"
response.write "<td align=left>"
response.write "页次:"&mypage_pageabsolute&"/"&mypage_pagetotal&"页 "
response.write "主题数:"&mypage_recordtotal
response.write "</td>"
response.write "<td align=right>"
response.write "分页:"
if mypage_pageabsolute>10 then
response.write "<a href='"&mypage_url&strand&"mypage_pageno=1'>"&firstpagetag&"</a>"
response.write "<a href='"&mypage_url&strand&"mypage_pageno="&(mypage_pageabsolute-10)&"'>"&previewpagetag&"</a>"
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 "<a href='"&mypage_url&strand&"mypage_pageno="¤tstartpage&"'>"&formatcurrentstartpage&"</a> "
i = i + 1
currentstartpage = currentstartpage + 1
wend
if mypage_pageabsolute<(mypage_pagetotal-10) then
response.write "<a href='"&mypage_url&strand&"mypage_pageno="&(mypage_pageabsolute+10)&"'>"&nextpagetag&"</a>"
response.write "<a href='"&mypage_url&strand&"mypage_pageno="&mypage_pagetotal&"'>"&lastpagetag&"</a>"
else
response.write nextpagetag
response.write lastpagetag
end if
response.write ""
response.write "</td>"
response.write "</tr>"
response.write "</table>"
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
%>
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