支持多風(fēng)格變換的ASP分頁類

2019-11-18 16:52:33

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供稿：網(wǎng)友

這個分頁使用的是0游標，也就是Rs.Open Sql,Conn,0,1。但是感覺也快不了多少，10
萬條數(shù)據(jù)的分頁時間300多豪秒之間
<%
Class Page
PRivate CurrPage
Private PageN
Private UrlStr
Private TempStr
Private ErrInfo
Private IsErr
Private TotalRecord
Private TotalPage
Public PageRs

Private TempA(11)
Private TempB(8)
'------------------------------------------------------------
Private Sub Class_Initialize()
      CurrPage=1'//默認顯示當前頁為第一頁
      PageN=10'//默認每頁顯示10條數(shù)據(jù)
      UrlStr="#"
      TempStr=""
      ErrInfo="ErrInfo:"
      IsErr=False
End Sub
Private Sub Class_Terminate()
      If IsObject(PageRs) Then
            PageRs.Close
            Set PageRs=Nothing
      End If
      Erase TempA
      Erase TempB
End Sub
'----------------------------------------------------------
'//獲取當前頁碼
Public Property Let CurrentPage(Val)
      CurrPage=Val
End Property
Public Property Get CurrentPage()
      CurrentPage=CurrPage
End Property
'//獲取每頁顯示條數(shù)
Public Property Let PageNum(Val)
      PageN=Val
End Property
Public Property Get PageNum()
      PageNum=PageN
End Property
'//獲取URL
Public Property Let Url(Val)
      UrlStr=Val
End Property
Public Property Get Url()
      Url=UrlStr
End Property
'//獲取模板
Public Property Let Temp(Val)
      TempStr=Val
End Property
Public Property Get Temp()
      Temp=TempStr
End Property
'------------------------------------------------------------

Public Sub Exec(Sql,ConnObj)
      On Error Resume Next
      Set PageRs=Server.CreateObject("ADODB.RecordSet")
      PageRs.CursorLocation = 3 '使用客戶端游標，可以使效率提高
      PageRs.PageSize = PageN '定義分頁記錄集每頁顯示記錄數(shù)
      PageRs.Open Sql,ConnObj,0,1
      If Err.Number<>0 Then
        Err.Clear
     PageRs.Close
     Set PageRs=Nothing
        ErrInfo=ErrInfo&"建立或打開記錄集錯誤..."
     IsErr=True
     Response.Write ErrInfo
     Response.End
      End If
      TotalRecord=PageRs.RecordCount'//如果為0呢？
      If TotalRecord>=1 Then
      '----------------------------------------------------------------------------開始
      '//計算總頁數(shù),Ps,為什么不用PageRs.PageCount呢？
      'If TotalRecord Mod PageN=0 Then
        'TotalPage=PageRs.RecordCount/PageN
      'Else
        'TotalPage=PageRs.RecordCount/PageN
     'TotalPage=Abs(Int(TotalPage))
      'End If
   TotalPage=PageRs.PageCount
      '//處理當前接收頁碼,默認的為1，所以不是數(shù)字類型的都會為1
      If IsNumeric(CurrPage) Then
         CurrPage=CLNg(CurrPage)
         If CurrPage<1 Then CurrPage=1
      If CurrPage>TotalPage Then CurrPage=TotalPage
      Else
            '//Dim M:M="":IsNumeric(M)=True
         CurrPage=1
      End If
      '---------------------------------------------------------------------------結(jié)束
      Else
         TotalPage=0
         CurrPage=1
      End If
      '//
      PageRs.AbsolutePage = CurrPage 'absolutepage：設(shè)置指針指向某頁開頭
      PageRs.PageSize=PageN
End Sub
Private Sub Init()
      'Private TempA(10)
      TempA(1)="{N1}" '//首頁
      TempA(2)="{N2}"'//上一頁
      TempA(3)="{N3}"'//下一頁
      TempA(4)="{N4}"'//尾頁
      TempA(5)="{N5}"'//當前頁碼
      TempA(6)="{N6}"'//頁碼總數(shù)
      TempA(7)="{N7}"'//每頁條數(shù)
      TempA(8)="{N8}"'//文章總數(shù)
      TempA(9)="{L}"'//循環(huán)標簽開始
      TempA(10)="{N}"'//循環(huán)內(nèi)單標簽：頁碼
      TempA(11)="{L/}"'//循環(huán)標簽結(jié)束
      'Private TempB(8)
      TempB(1)="首頁"
      TempB(2)="上一頁"
      TempB(3)="下一頁"
      TempB(4)="尾頁"
      TempB(5)=CurrPage'//當前頁碼
      TempB(6)=TotalPage'//頁碼總數(shù)
      TempB(7)=PageN'//每頁條數(shù)
      TempB(8)=TotalRecord'//文章總數(shù)
End Sub
Public Sub Show(Style)
      If IsErr=True Then
        Response.Write ErrInfo
     Exit Sub
      End If

      Call Init()
      Select Case Style
      Case 1
         Response.Write StyleA()
      Case 2
         Response.Write StyleB()
      Case 3
         Response.Write StyleC()
      Case 4
         Response.Write StyleD()
      Case Else
         ErrInfo=ErrInfo&"不存在當前樣式..."
      Response.Write ErrInfo
      End Select
End Sub
Public Function ShowStyle(Style)
      If IsErr=True Then
        ShowStyle=ErrInfo
     Exit Function
      End If

      Call Init()
      Select Case Style
      Case 1
         ShowStyle= StyleA()
      Case 2
         ShowStyle= StyleB()
      Case Else
         ErrInfo=ErrInfo&"不存在當前樣式..."
ShowStyle=ErrInfo
      End Select
End Function

Private Function StyleA()
'首頁上一頁下一頁尾頁本頁為第1/20頁，共20頁，每頁10條，文章總數(shù)200條
'//分頁樣例：[首頁] [上頁] [下頁] [尾頁] [頁次：4/5頁] [共86篇 20篇/頁] 轉(zhuǎn)到：_ 頁
'//標簽：{N1} {N2} {N3} {N4} || 共:{N8}條記錄 {N6}頁當前為第{N5}頁每頁{N7}條
If IsEmpty(TempStr) Then
      ErrInfo=ErrInfo&"模板為空..."
      StyleB=ErrInfo
      Exit Function
End If
Dim M
If TotalPage>1 Then
      If CurrPage>1 Then
        M="<a href='"&UrlStr&"Page=1'>"&"首頁"&"</a>"
     TempStr=Replace(TempStr,"{N1}",M)
     M="<a href='"&UrlStr&"Page="&CurrPage-1&"'>"&"上一頁"&"</a>"
     TempStr=Replace(TempStr,"{N2}",M)
     If CurrPage<TotalPage Then
       M="<a href='"&UrlStr&"Page="&CurrPage+1&"'>"&"下一頁"&"</a>"
    TempStr=Replace(TempStr,"{N3}",M)
    M="<a href='"&UrlStr&"Page="&TotalPage&"'>"&"尾頁"&"</a>"
          TempStr=Replace(TempStr,"{N4}",M)
        Else
       TempStr=Replace(TempStr,"{N3}","下一頁")
    TempStr=Replace(TempStr,"{N4}","尾頁")
     End If
      Else
        TempStr=Replace(TempStr,"{N1}","首頁")
     TempStr=Replace(TempStr,"{N2}","上一頁")
        M="<a href='"&UrlStr&"Page="&CurrPage+1&"'>"&"下一頁"&"</a>"
     TempStr=Replace(TempStr,"{N3}",M)
     M="<a href='"&UrlStr&"Page="&TotalPage&"'>"&"尾頁"&"</a>"
        TempStr=Replace(TempStr,"{N4}",M)
      End If
Else
      TempStr=Replace(TempStr,"{N1}","首頁")
      TempStr=Replace(TempStr,"{N2}","上一頁")
      TempStr=Replace(TempStr,"{N3}","下一頁")
      TempStr=Replace(TempStr,"{N4}","尾頁")
End If
T=TempStr
T=Replace(T,"{N8}",TotalRecord)
T=Replace(T,"{N6}",TotalPage)
T=Replace(T,"{N5}",CurrPage)
T=Replace(T,"{N7}",PageN)
TempStr=T
StyleA=TempStr
End Function

Private Function StyleB()
'首頁 |< 1 2 3 4 5 6 7 >| 尾頁
'//標簽:{N1} {N2} {L}{N}{L/}{N3}{N4}
If IsEmpty(TempStr) Then
      ErrInfo=ErrInfo&"模板為空..."
      StyleB=ErrInfo
      Exit Function
End If
Dim ForceNum,BackNum'//當前頁的前面和后面顯示個數(shù)
ForceNum=5
BackNum=4
Dim M
'//首頁
M="<a href='"&UrlStr&"Page=1'>"&TempB(1)&"</a>"
TempStr=Replace(TempStr,"{N1}",M)
'//尾頁
M="<a href='"&UrlStr&"Page="&TempB(6)&"'>"&TempB(4)&"</a>"
TempStr=Replace(TempStr,"{N4}",M)
'//前一頁
M="|<"
If CurrPage-1>=1 Then
      M="<a href='"&UrlStr&"Page="&CurrPage-1&"'>"&"|<"&"</a>"
End If
TempStr=Replace(TempStr,"{N2}",M)
'//后一頁
M=">|"
If CurrPage+1<=TotalPage Then
      M="<a href='"&UrlStr&"Page="&CurrPage+1&"'>"&">|"&"</a>"
End If
TempStr=Replace(TempStr,"{N3}",M)
'//取出循環(huán)標簽
Dim N1,N2,N3,N4,N5,N6
If InStr(TempStr,"{L}")>0 Then
      N1=InStr(TempStr,"{L}")
End If
If InStr(TempStr,"{L/}")>0 Then
      N2=InStr(TempStr,"{L/}")
End If
If N2<=N1 Then
      ErrInfo=ErrInfo&"循環(huán)標簽出錯..."
      StyleB=ErrInfo
      Exit Function
End If
N3=Mid(TempStr,N1,N2-N1+4)'//儲存包括{L}{L/}循環(huán)標簽的模板
N4=Replace(N3,"{L}","")'//儲存不包括{L}{L/}循環(huán)標簽的模板
N4=Replace(N4,"{L/}","")
'//頁碼列表
Dim FirstPageNum,LastPageNum
If CurrPage-ForceNum<=1 Then
   FirstPageNum=1
   PageList=""
Else
   FirstPageNum=CurrPage-ForceNum
   PageList="... ..."
End If
If CurrPage+BackNum>=TotalPage Then
   LastPageNum=TotalPage
   PageList_2=""
Else
   LastPageNum=CurrPage+BackNum
   PageList_2="... ..."
End If
Dim I
For I=FirstPageNum To LastPageNum
      If I=CurrPage Then
        N5=Replace(N4,"{N}","<b>"&I&"</b>")
     N6=N6&N5
      Else
        M="<a href='"&UrlStr&"Page="&I&"'>"&I&"</a>"
     N5=Replace(N4,"{N}",M)
     N6=N6&N5
      End If
Next
TempStr=Replace(TempStr,N3,N6)
StyleB=TempStr
End Function

Private Function StyleC()
'首頁 |< |<< 1 2 3 4 5 6 7 >>| >| 尾頁
'//此風(fēng)格在StyleB的基礎(chǔ)上修改，增加兩個標簽：{N9}上10頁 {N10}下10頁
'//標簽:{N1}{N2}{N9}{L}{N}{L/}{N10}{N3}{N4}
Dim T
T=StyleB()
'//前十頁
M="|<<"
If CurrPage-10>=1 Then
M="<a href='"&UrlStr&"Page="&CurrPage-10&"'>"&"|<<"&"</a>"
End If
T=Replace(T,"{N9}",M)
M=">>|"
If CurrPage+10<=TotalPage Then
M="<a href='"&UrlStr&"Page="&CurrPage+10&"'>"&">>|"&"</a>"
End If
T=Replace(T,"{N10}",M)
StyleC=T
End Function

Private Function StyleD()
'//此風(fēng)格在StyleC的基礎(chǔ)上修改
'//共{N8}條記錄 {N6}頁當前為第{N5}頁每頁{N7}條
'//首頁 |< |<< 1 2 3 4 5 6 7 >>| >| 尾頁
'//標簽:{N1}{N2}{N9}{L}{N}{L/}{N10}{N3}{N4}
Dim T
T=StyleC()
T=Replace(T,"{N8}",TotalRecord)
T=Replace(T,"{N6}",TotalPage)
T=Replace(T,"{N5}",CurrPage)
T=Replace(T,"{N7}",PageN)
StyleD=T
End Function

End Class
%>

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