收集常用函數與寫法...

 程序代碼

'獲取用戶真實IP函數
Function GetIP()
    GetIP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
    If GetIP = "" Then GetIP = Request.ServerVariables("REMOTE_ADDR")
End Function

'獲取完整地址欄地址
Function GetUrl()
    GetUrl="http://"&Request.ServerVariables("SERVER_NAME")&Request.ServerVariables("URL")
    If Request.ServerVariables("QUERY_STRING")<>"" Then GetURL=GetUrl&"?"& Request.ServerVariables("QUERY_STRING")
End Function

'獲取本頁文件名
Function SelfName()
    SelfName = Mid(Request.ServerVariables("URL"),InstrRev(Request.ServerVariables("URL"),"/")+1)
End Function

'獲取文件後綴名
Function GetExt(filename)
    GetExt = Mid(filename,InstrRev(filename,".")+1)
End Function

'過濾不良字符
Function ChkBadWords(fString)
    Dim BadWords,bwords,i
    BadWords = "|王八|洪志"
    If Not(IsNull(BadWords) or IsNull(fString)) Then
    bwords = Split(BadWords, "|")
    For i = 0 to UBound(bwords)
        fString = Replace(fString, bwords(i), string(Len(bwords(i)),"*"))
    Next
    ChkBadWords = fString
    End If
End Function

'防止外部提交
Function ChkPost()
    Dim URL1,URL2
    ChkPost = False
    URL1 = Cstr(Request.ServerVariables("HTTP_REFERER"))
    URL2 = Cstr(Request.ServerVariables("SERVER_NAME"))
    If Mid(URL1,8,Len(URL2))<>URL2 Then
        ChkPost = False
    Else
        ChkPost = True
    End If
End Function

'過濾HTML字符函數
Function HTMLEncode(fString)
If Not IsNull(fString) And fString <> "" Then
    fString = Replace(fString, "&", "&")
    fString = Replace(fString, ">", ">")
    fString = Replace(fString, "<", "<")
    fString = Replace(fString, Chr(32), " ")
    fString = Replace(fString, Chr(9), "  ")
    fString = Replace(fString, Chr(34), """)
    fString = Replace(fString, Chr(39), "'")
    fString = Replace(fString, Chr(13), "")
    fString = Replace(fString, Chr(10) & Chr(10), "</P><P>")
    fString = Replace(fString, Chr(10), "<BR>")
    fString = Replace(fString, Chr(255), " ")
    HTMLEncode = fString
End If
End Function

'清除HTML標記
Function stripHTML(strHTML)
    Dim objRegExp,strOutput
    Set objRegExp = New Regexp
    objRegExp.IgnoreCase = True
    objRegExp.Global = True
    objRegExp.Pattern = "<.+?>"
    strOutput = objRegExp.Replace(strHTML,"")
    strOutput = Replace(strOutput, "<","<")
    strOutput = Replace(strOutput, ">",">")
    stripHTML = strOutput
    Set objRegExp = Nothing
End Function

===============================================================================
以下儲存為 editplus 之*.ctl檔
===============================================================================
#TITLE=ASP常用語法及函數
#INFO
ASP常用的一些語法及自定義函數
#SORT=n

#T= ===ASP常用語法===
#T=============================
#T=數據庫相關
#T= 連接ACCESS數據庫
<%
Dim DBName,Conn
DBName"^!"    '定義數據庫路徑及名稱
SET Conn = Server.CreateObject("ADODB.Connection")
Conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath(DBName)
%>

#T= 連接MS SQL數據庫
<%
Dim Conn
SET Conn=Server.CreateObject("ADODB.connection")
Conn.Open "PROVIDER=SQLOLEDB;DATA SOURCE=SQL服務器名稱或IP地址;UID=數據庫登錄帳號;PWD=數據庫密碼;DATABASE=數據庫名稱"
%>

#T= 建立記錄集
SET ^!=Server.CreateObject("ADODB.recordset")

#T= 執行SQL命令
RS.Open SQL,conn,1,1

#T= 執行SQL命令
Conn.Execute("^!")

#T= RS直接執行SQL命令
SET RS = Conn.Execute("^!")

#T= 關閉記錄集
RS.CLOSE
SET RS=NOTHING

#T= 關閉數據庫
Conn.Close
SET Conn=Nothing

#T=============================
#T=ServerVariables相關
#T= 取上一頁地址
Request.ServerVariables("HTTP_REFERER")

#T= 取服務器的名稱1
Request.ServerVariables("SERVER_NAME")

#T= 取服務器的名稱2
Request.ServerVariables("HTTP_HOST")

#T= 取服務器IP
Request.ServerVariables("LOCAL_ADDR")

#T= 取用戶IP
Request.ServerVariables("Remote_Host")

#T= 取用戶真實IP1
Request.serverVariables("REMOTE_ADDR")

#T= 取用戶真實IP函數
Function GetRealIP()
    GetRealIP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
    IF(GetRealIP = "")THEN GetRealIP = Request.ServerVariables("REMOTE_ADDR")
End Function

#T= 取服務器端口
Request.ServerVariables("SERVER_PORT")

#T= 取服務器操作系統
Request.ServerVariables("OS")

#T= 取服務器的絕對路徑
Request.ServerVariables("APPL_PHYSICAL_PATH")

#T= 取本文件的絕對路徑1
Requet.ServerVariables("PATH_TRANSLATED")

#T= 取本文件的絕對路徑2
Server.mappath(Request.ServerVariables("SCRIPT_NAME"))

#T= 取本文件的相對路徑1
Request.ServerVariables("URL")

#T= 取本文件的相對路徑2
Request.ServerVariables("SCRIPT_NAME")

#T= 取本文件的相對路徑3
Request.ServerVariables("PATH_INFO")

#T= 取地址欄後的參數
Request.ServerVariables("QUERY_STRING")

#T= 取服務器系統信息
Request.ServerVariables("HTTP_USER_AGENT")

#T= 服務器組件檢測
<%
Function IsObjInstalled(strClassString)
    On Error Resume Next
    IsObjInstalled = False
    Err = 0
    Dim xTestObj
    SET xTestObj = Server.CreateObject(strClassString)
    IF(0 = Err)THEN IsObjInstalled = True
    SET xTestObj = Nothing
    Err = 0
End Function
'IF(IsObjInstalled("Persits.Upload")=True)THEN
'    Response.Write "支持AspUpload組件"
'ELSE
'    Response.Write "不支持AspUpload組件"
'END IF
%>

#T= 取客戶端語言環境
^!Request.ServerVariables("HTTP_ACCEPT_LANGUAGE")

#T= 取客戶端信息:HTTP_USER_AGENT
^!Request.ServerVariables("HTTP_USER_AGENT")

#T= 取表單(Form)值元素值
Request.Form("^!")

#T= 取URL傳遞的值
Request.QueryString("^!")

#T= 取完整URL地址
Function GetUrl()
    GetUrl="http://"&Request.ServerVariables("SERVER_N ... .ServerVariables("URL")
    IF(Request.ServerVariables("QUERY_STRING")<>"")THEN GetURL=GetUrl&"?"& Request.ServerVariables("QUERY_STRING")
End Function

#T=============================
#T=自定義函數
#T= 過濾HTML字符
<%
'過濾HTML字符函數
Function HTMLEncode(str)
    IF(str <> "")THEN
        str = Replace(str, "&", "&")
        str = Replace(str, ">", ">")
        str = Replace(str, "<", "<")
        str = Replace(str, Chr(32), " ")
        str = Replace(str, Chr(9), "    ")
        str = Replace(str, Chr(34), """)
        str = Replace(str, Chr(39), "'")
        str = Replace(str, Chr(13), "")
        str = Replace(str, Chr(10) & Chr(10), "</P><P>")
        str = Replace(str, Chr(10), "<BR>")
        str = Replace(str, Chr(255), " ")
    END IF
    HTMLEncode = str
End Function
%>

#T= 檢測上頁是否從本站提交
<%
'檢測上頁是否從本站提交
'返回:True,False
'===============================================================
Function IsSelfRefer()
    Dim sHttp_Referer, sServer_Name
    sHttp_Referer = CStr(Request.ServerVariables("HTTP_REFERER"))
    sServer_Name = CStr(Request.ServerVariables("SERVER_NAME"))
    IF(Mid(sHttp_Referer, 8, Len(sServer_Name)) = sServer_Name)THEN
        IsSelfRefer = True
    ELSE
        IsSelfRefer = False
    END IF
End Function
%>

#T= 清除所有HTML標記
<%
'清除HTML標記
Function stripHTML(htmlStr)
    Dim regEx
    SET regEx = New Regexp
    regEx.IgnoreCase = True
    regEx.Global = True
    regEx.Pattern = "<.+?>"
    htmlStr = regEx.Replace(htmlStr,"")
    htmlStr = Replace(htmlStr, "<","<")
    htmlStr = Replace(htmlStr, ">",">")
    htmlStr = Replace(htmlStr,chr(10),"")
    htmlStr = Replace(htmlStr,chr(13),"")
    stripHTML = htmlStr
    SET regEx = Nothing
End Function

%>

#T= 取字符串長度
<%
'求字符串長度函數
Function GetLength(str)
    Dim Length
    For i=1 to Len(str)
        IF(Asc(Mid(str,i,1))<0 or Asc(Mid(str,i,1))>256)THEN
            Length=Length+2
        ELSE
            Length=Length+1
        END IF
    Next
    GetLength=Length
End Function
%>

#T= 截取指定長度字符串
<%
'截取指定長度的字符串,多餘的用...代替
Function StrLeft(str,strlen)
    IF(str = "")THEN
        StrLeft = ""
        Exit Function
    END IF
    Dim l,t,c,i
    str = Replace(Replace(Replace(Replace(str," "," "),""",chr(34)),">",">"),"<","<")
    l=len(str)
    t=0
    For i=1 to l
        c=Abs(Asc(Mid(str,i,1)))
        IF(c>255)THEN
            t=t+2
        ELSE
            t=t+1
        END IF
        IF(t>strlen)THEN
            StrLeft = left(str,i) & "..."
            Exit For
        ELSE
            StrLeft = str
        END IF
    Next
    StrLeft = Replace(Replace(Replace(Replace(StrLeft," "," "),chr(34),"""),">",">"),"<","<")
End Function
%>

#T= 獲取安全的提交參數
<%
'===============================================================
'SQL Injection Check
'函數功能:過濾字符參數中的單引號,對於數字參數進行判斷,如果不是數值類型,則賦值0
'參數意義:str ---- 要過濾的參數
'strType ---- 參數類型,分為字符型和數字型,字符型為"s",數字型為"i"
'===============================================================
Function CheckStr(str,strType)
    Dim strTmp  
    strTmp = ""  
    IF(strType ="s")THEN  
        strTmp = Replace(Trim(str),"'","''")  
    ELSEIF(strType="i")THEN  
        IF(IsNumeric(str)=False)THEN str=False  
        strTmp = str  
    ELSE  
        strTmp = str  
    End IF
    CheckStr= strTmp  
End Function
%>

#T= 過濾不良字符(BadWord)
<%
'過濾不良字符(BadWords)
Function ChkBadWords(fString)
    Dim BadWords,bwords,i
    BadWords = "王八|洪志"
    IF(Not(IsNull(BadWords) or IsNull(fString)))THEN
    bwords = Split(BadWords, "|")
    For i = 0 to UBound(bwords)
        fString = Replace(fString, bwords(i), string(Len(bwords(i)),"*"))
    Next
    ChkBadWords = fString
    END IF
End Function
%>

#T= 生成隨機自定義長度密碼
<%
'生成隨機自定義長度密碼
Function makePassword(maxLen)
    Dim strNewPass
    Dim whatsNext, upper, lower, intCounter
    Randomize
    For intCounter = 1 To maxLen
        whatsNext = Int((1 - 0 + 1) * Rnd + 0)
        IF(whatsNext = 0)THEN
        'character
            upper = 90
            lower = 65
        ELSE
            upper = 57
            lower = 48
        END IF
        strNewPass = strNewPass & Chr(Int((upper - lower + 1) * Rnd + lower))
    Next
    makePassword = strNewPass
End Function
'Response.Write makepassword(8)
%>

#T= 填入Textarea時保持格式inHTML
<%
'===============================================================
'去除Html格式,用於從數據庫中取出值填入輸入框時
'注意:value="?"這邊一定要用雙引號
'===============================================================
Function inHTML(str)
     Dim sTemp
     sTemp = str
     inHTML = ""
     If IsNull(sTemp) = True Then
        Exit Function
     End If
     sTemp = Replace(sTemp, "&", "&")
     sTemp = Replace(sTemp, "<br>",chr(13))
     sTemp = Replace(sTemp, "<", "<")
     sTemp = Replace(sTemp, ">", ">")
     sTemp = Replace(sTemp, """, Chr(34))
     inHTML = sTemp
End Function
%>

#T= 正則表表達式驗證函數
<%
'正則表表達式驗證函數 patrn-正則表達式 strng-需要驗證的字符串
'===============================================================
Function RegExpTest(patrn, strng)
    Dim regEx, retVal ' 建立變量。
    SET regEx = New RegExp ' 建立正則表達式。
    regEx.Pattern = patrn ' 設置模式。
    regEx.IgnoreCase = False ' 設置是否區分大小寫。
    retVal = regEx.Test(strng) ' 執行搜索測試。
    RegExpTest = retVal '返回值,不符合就返回false,符合為true
    SET regEx = NOTHING
End Function
%>


#T= 生成隨機字符串
<%
'生成隨機字符串
Function RndCode()
    Dim CodeSet,AmountSet
    CodeSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
    AmountSet = 62 ' 文字數量
    Randomize

    Dim vCode(10), vCodes,i
    For i = 0 To 9
      vCode(i) = Int(Rnd * AmountSet)
      vCodes = vCodes & Mid(CodeSet, vCode(i) + 1, 1)
    Next
    RndCode=vCodes
End Function
%>


#T=============================
#T=FSO相關操作
#T= 判斷目錄是否存在
<%
Function IsFloderExist(strFolderName)
    SET FSO=Server.CreateObject("Scripting.FileSystemObject")
    IF(FSO.FolderExists(strFolderName))THEN
        IsFloderExist = True
    ELSE
        IsFloderExist = False
    END IF
    SET FSO=NOTHING
End Function
%>

#T= 創建目錄
<%
Function CreateFolder(strFolderName)
    SET FSO=Server.CreateObject("Scripting.FileSystemObject")
    IF(FSO.FolderExists(strFolderName) = False)THEN
        FSO.CreateFolder(strFolderName)
    END IF
    SET FSO=NOTHING
END Function
%>

#T= 刪除目錄
<%
Function DeleteFolder(strFolderName)
    SET FSO=Server.CreateObject("Scripting.FileSystemObject")
    IF(FSO.FolderExists(strFolderName))THEN
        FSO.DeleteFolder(strFolderName)
    END IF
    SET FSO=NOTHING
END Function
%>

#T= 判斷文件是否存在
<%
Function IsFileExist(strFileName)
    SET FSO=Server.CreateObject("Scripting.FileSystemObject")
    IF(FSO.FileExists(strFileName))THEN
        IsFileExist = True
    ELSE
        IsFileExist = False
    END IF
    SET FSO=NOTHING
End Function
%>

#T= 刪除文件
<%
Function DeleteFile(strFileName)
    SET FSO=Server.CreateObject("Scripting.FileSystemObject")
    IF(FSO.FileExists(strFileName))THEN
        FSO.DeleteFile(strFileName)
    END IF
    SET FSO=NOTHING
END Function
%>

#T=============================
#T= ASP小偷常用的幾個函數
<%
Function ByteToStr(vIn)
    Dim strReturn,i,ThisCharCode,innerCode,Hight8,Low8,NextCharCode
    strReturn = ""
    For i = 1 To LenB(vIn)
        ThisCharCode = AscB(MidB(vIn,i,1))
        IF(ThisCharCode < &H80)THEN
            strReturn = strReturn & Chr(ThisCharCode)
        ELSE
            NextCharCode = AscB(MidB(vIn,i+1,1))
            strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
            i = i + 1
        END IF
    Next
    ByteToStr = strReturn
End Function

Function GetHttpPageContent(url,Method,SendStr)
    Dim Retrieval
    SET Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
    With Retrieval
        .Open Method, url, False ,"" ,""
        .setRequestHeader "Content-Type","application/x-www-form-urlencoded"
        .Send(SendStr)
        GetHttpPageContent = .ResponseBody
    End With
    SET Retrieval = Nothing
    GetHttpPageContent=ByteToStr(GetHttpPageContent)
End Function

Function RegExpText(strng,regStr)
    Dim regEx,Match,Matches,RetStr
    SET regEx = New RegExp
    regEx.Pattern = regStr
    regEx.IgnoreCase = True
    regEx.Global = True
    SET Matches = regEx.Execute(strng)
    For Each Match in Matches
        RetStr = RetStr & regEx.Replace(Match.Value,"$1") & ","
    Next
    RegExpText = RetStr
    set regEx=nothing
End Function

Function StreamBytesToBstr(strBody, CodeBase)
Dim objStream
SET objStream = Server.CreateObject("Adodb.Stream")
With objStream
    .Type = 1
    .Mode = 3
    .Open
    .Write strBody
    .Position = 0
    .Type = 2
    .Charset = CodeBase
    StreamBytesToBstr = .ReadText
    .Close
End With
SET objStream = Nothing
End Function
%>

來源:http://www.ironman.tw/article.asp?id=64

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