经典ASP（VBScript）将HTML代码转换为纯文本

时间：2011-05-24 19:20:29

标签： html vbscript asp-classic

我正在尝试转换HTML代码，例如＆amp; #XXXX; （其中XXXX是一个数字）使用经典ASP（VBScript）的纯文本。

我正在将文本添加到纯文本格式的电子邮件中，如果我将它们添加为HTML代码，它只显示代码而不会转换它们。

一个修复方法是将电子邮件更改为HTML，这可以解决该问题，但会导致我的电子邮件出现其他问题，我不会进入。

是否有内置函数或自定义函数可用于将这些HTML代码转换为纯文本？

3 个答案:

答案 0 :(得分：19)

你需要的是HTML Decode，但遗憾的是ASP不包括一个。

此功能在ASP Nut上找到，并经过我的大量修改，可以满足您的需求。我测试它是在我的本地计算机上运行的vbscript，它似乎运行良好，即使在1000+范围内使用Unicode符号。

Function HTMLDecode(sText)
    Dim regEx
    Dim matches
    Dim match
    sText = Replace(sText, """, Chr(34))
    sText = Replace(sText, "<"  , Chr(60))
    sText = Replace(sText, ">"  , Chr(62))
    sText = Replace(sText, "&" , Chr(38))
    sText = Replace(sText, " ", Chr(32))


    Set regEx= New RegExp

    With regEx
     .Pattern = "&#(\d+);" 'Match html unicode escapes
     .Global = True
    End With

    Set matches = regEx.Execute(sText)

    'Iterate over matches
    For Each match in matches
        'For each unicode match, replace the whole match, with the ChrW of the digits.

        sText = Replace(sText, match.Value, ChrW(match.SubMatches(0)))
    Next

    HTMLDecode = sText
End Function

注意：您需要在服务器上安装脚本版本5.0才能使用RegExp对象。

答案 1 :(得分：1)

一个更加执行的解码器epanding C. Ross回应

Function HTMLDecode(sText)
    Dim regEx
    Dim matches
    Dim match
    sText = Replace(sText, """, Chr(34))
    sText = Replace(sText, "<"  , Chr(60))
    sText = Replace(sText, ">"  , Chr(62))
    sText = Replace(sText, "&" , Chr(38))
    sText = Replace(sText, " ", Chr(32))

    sText = Replace(sText, "¡", Chr(161))
    sText = Replace(sText, "£", Chr(163))
    sText = Replace(sText, "¥", Chr(165))
    sText = Replace(sText, "©", Chr(168))
    sText = Replace(sText, "«", Chr(171))
    sText = Replace(sText, "»", Chr(187))
    sText = Replace(sText, "¿", Chr(191))
    sText = Replace(sText, "À", Chr(192))
    sText = Replace(sText, "Á", Chr(193))
    sText = Replace(sText, "Â", Chr(194))
    sText = Replace(sText, "Ã", Chr(195))
    sText = Replace(sText, "Ä", Chr(196))
    sText = Replace(sText, "Å", Chr(197))
    sText = Replace(sText, "Æ", Chr(198))
    sText = Replace(sText, "Ç", Chr(199))
    sText = Replace(sText, "È", Chr(200))
    sText = Replace(sText, "É", Chr(201))
    sText = Replace(sText, "Ê", Chr(202))
    sText = Replace(sText, "Ë", Chr(203))
    sText = Replace(sText, "Ì", Chr(204))
    sText = Replace(sText, "Í", Chr(205))
    sText = Replace(sText, "Î", Chr(206))
    sText = Replace(sText, "Ï", Chr(207))
    sText = Replace(sText, "Ñ", Chr(209))
    sText = Replace(sText, "Ò", Chr(210))
    sText = Replace(sText, "Ó", Chr(211))
    sText = Replace(sText, "Ô", Chr(212))
    sText = Replace(sText, "Õ", Chr(213))
    sText = Replace(sText, "Ö", Chr(214))
    sText = Replace(sText, "×", Chr(215))
    sText = Replace(sText, "Ø", Chr(216))
    sText = Replace(sText, "Ù", Chr(217))
    sText = Replace(sText, "Ú", Chr(218))
    sText = Replace(sText, "Û", Chr(219))
    sText = Replace(sText, "Ü", Chr(220))
    sText = Replace(sText, "Ý", Chr(221))
    sText = Replace(sText, "Þ", Chr(222))
    sText = Replace(sText, "ß", Chr(223))
    sText = Replace(sText, "à", Chr(224))
    sText = Replace(sText, "á", Chr(225))
    sText = Replace(sText, "â", Chr(226))
    sText = Replace(sText, "ã", Chr(227))
    sText = Replace(sText, "ä", Chr(228))
    sText = Replace(sText, "å", Chr(229))
    sText = Replace(sText, "æ", Chr(230))
    sText = Replace(sText, "ç", Chr(231))
    sText = Replace(sText, "è", Chr(232))
    sText = Replace(sText, "é", Chr(233))
    sText = Replace(sText, "ê", Chr(234))
    sText = Replace(sText, "ë", Chr(235))
    sText = Replace(sText, "ì", Chr(236))
    sText = Replace(sText, "í", Chr(237))
    sText = Replace(sText, "î", Chr(238))
    sText = Replace(sText, "ï", Chr(239))
    sText = Replace(sText, "ð", Chr(240))
    sText = Replace(sText, "ñ", Chr(241))
    sText = Replace(sText, "ò", Chr(242))
    sText = Replace(sText, "ó", Chr(243))
    sText = Replace(sText, "ô", Chr(244))
    sText = Replace(sText, "õ", Chr(245))
    sText = Replace(sText, "ö", Chr(246))
    sText = Replace(sText, "÷", Chr(247))
    sText = Replace(sText, "ø", Chr(248))
    sText = Replace(sText, "ù", Chr(249))
    sText = Replace(sText, "ú", Chr(250))
    sText = Replace(sText, "û", Chr(251))
    sText = Replace(sText, "ü", Chr(252))
    sText = Replace(sText, "ý", Chr(253))
    sText = Replace(sText, "þ", Chr(254))
    sText = Replace(sText, "ÿ", Chr(255))

    Set regEx= New RegExp

    With regEx
     .Pattern = "&#(\d+);" 'Match html unicode escapes
     .Global = True
    End With

    Set matches = regEx.Execute(sText)

    'Iterate over matches
    For Each match in matches
        'For each unicode match, replace the whole match, with the ChrW of the digits.

        sText = Replace(sText, match.Value, ChrW(match.SubMatches(0)))
    Next

    HTMLDecode = sText
End Function

答案 2 :(得分：-1)

我是根据C.Ross的上述答案以及来自其他人的fb_app.inc的一些代码制作的。应该这样做。

    <%
    Option Explicit

    Dim objHelper
    Set objHelper = New HtmlEntityToUnicode

    Response.Write(objHelper.HtmlDecode("<br/><br/>hi  &#128154; green heart! purple heart &#128156; ! "))

    Set objHelper = Nothing

    Class HtmlEntityToUnicode
    dim BITS_TO_A_BYTE 
    dim BYTES_TO_A_WORD 
    dim BITS_TO_A_WORD 
    Dim m_lOnBits(30)
    Dim m_l2Power(30)

    Sub Class_Initialize()


        BITS_TO_A_BYTE = 8
        BYTES_TO_A_WORD = 4
        BITS_TO_A_WORD = 32

        m_lOnBits(0) = CLng(1)
        m_lOnBits(1) = CLng(3)
        m_lOnBits(2) = CLng(7)
        m_lOnBits(3) = CLng(15)
        m_lOnBits(4) = CLng(31)
        m_lOnBits(5) = CLng(63)
        m_lOnBits(6) = CLng(127)
        m_lOnBits(7) = CLng(255)
        m_lOnBits(8) = CLng(511)
        m_lOnBits(9) = CLng(1023)
        m_lOnBits(10) = CLng(2047)
        m_lOnBits(11) = CLng(4095)
        m_lOnBits(12) = CLng(8191)
        m_lOnBits(13) = CLng(16383)
        m_lOnBits(14) = CLng(32767)
        m_lOnBits(15) = CLng(65535)
        m_lOnBits(16) = CLng(131071)
        m_lOnBits(17) = CLng(262143)
        m_lOnBits(18) = CLng(524287)
        m_lOnBits(19) = CLng(1048575)
        m_lOnBits(20) = CLng(2097151)
        m_lOnBits(21) = CLng(4194303)
        m_lOnBits(22) = CLng(8388607)
        m_lOnBits(23) = CLng(16777215)
        m_lOnBits(24) = CLng(33554431)
        m_lOnBits(25) = CLng(67108863)
        m_lOnBits(26) = CLng(134217727)
        m_lOnBits(27) = CLng(268435455)
        m_lOnBits(28) = CLng(536870911)
        m_lOnBits(29) = CLng(1073741823)
        m_lOnBits(30) = CLng(2147483647)

        m_l2Power(0) = CLng(1)
        m_l2Power(1) = CLng(2)
        m_l2Power(2) = CLng(4)
        m_l2Power(3) = CLng(8)
        m_l2Power(4) = CLng(16)
        m_l2Power(5) = CLng(32)
        m_l2Power(6) = CLng(64)
        m_l2Power(7) = CLng(128)
        m_l2Power(8) = CLng(256)
        m_l2Power(9) = CLng(512)
        m_l2Power(10) = CLng(1024)
        m_l2Power(11) = CLng(2048)
        m_l2Power(12) = CLng(4096)
        m_l2Power(13) = CLng(8192)
        m_l2Power(14) = CLng(16384)
        m_l2Power(15) = CLng(32768)
        m_l2Power(16) = CLng(65536)
        m_l2Power(17) = CLng(131072)
        m_l2Power(18) = CLng(262144)
        m_l2Power(19) = CLng(524288)
        m_l2Power(20) = CLng(1048576)
        m_l2Power(21) = CLng(2097152)
        m_l2Power(22) = CLng(4194304)
        m_l2Power(23) = CLng(8388608)
        m_l2Power(24) = CLng(16777216)
        m_l2Power(25) = CLng(33554432)
        m_l2Power(26) = CLng(67108864)
        m_l2Power(27) = CLng(134217728)
        m_l2Power(28) = CLng(268435456)
        m_l2Power(29) = CLng(536870912)
        m_l2Power(30) = CLng(1073741824)

    End Sub

    Public Function HTMLDecode(sText)
        Dim regEx
        Dim matches
        Dim match
        sText = Replace(sText, "&quot;", Chr(34))
        sText = Replace(sText, "&lt;"  , Chr(60))
        sText = Replace(sText, "&gt;"  , Chr(62))
        sText = Replace(sText, "&amp;" , Chr(38))
        sText = Replace(sText, "&nbsp;", Chr(32))


        Set regEx= New RegExp

        With regEx
         .Pattern = "&#(\d+);" 'Match html unicode escapes
         .Global = True
        End With

        Set matches = regEx.Execute(sText)

        'Iterate over matches
        For Each match in matches
        'For each unicode match, replace the whole match, with the ChrW of the digits.
            sText = Replace(sText, match.Value, "\U"&WordToHex(match.SubMatches(0)))
        Next

        HTMLDecode = sText
    End Function


    Private Function WordToHex(lValue)
        Dim lByte
        Dim lCount

        For lCount = 0 To 3
            lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
             WordToHex = Right("0" & Hex(lByte), 2) & WordToHex 
        Next
    End Function

    Private Function RShift(lValue, iShiftBits)
        If iShiftBits = 0 Then
            RShift = lValue
            Exit Function
        ElseIf iShiftBits = 31 Then
            If lValue And &H80000000 Then
                RShift = 1
            Else
                RShift = 0
            End If
            Exit Function
        ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
            Err.Raise 6
        End If

        RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)

        If (lValue And &H80000000) Then
            RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))
        End If
    End Function

    End Class


    %>
相关问题
最新问题