asp 過濾html <>敏感字元轉換成html編碼執行個體

來源:互聯網
上載者:User

function dvHTMLCode(byval fString)
 if isnull(fString) or trim(fString)="" then
  dvHTMLCode=""
  exit function
 end if
    fString = replace(fString, "&gt;", ">")
    fString = replace(fString, "&lt;", "<")

    fString = Replace(fString,  "&nbsp;"," ")
    fString = Replace(fString, "&quot;", CHR(34))
    fString = Replace(fString, "&#39;", CHR(39))
    fString = Replace(fString, "</P><P> ",CHR(10) & CHR(10))
    fString = Replace(fString, "<BR> ", CHR(10))

    dvHTMLCode = fString
end function
%>
<body>
<form name="form1" method="post" action="?action=submit">
  <label>
  <textarea name="textarea" cols="40" rows="7"></textarea>
  </label>
  <p>
    <label>
    <input type="text" name="textfield">
    </label>
  </p>
  <p>
    <label>
    <input type="submit" name="Submit" value="提交">
    </label>
  </p>
</form>
</body>
</html>
<%
if request("action") = "submit" then
 ubbHtml =  request.Form("textarea")
 ubbTitle = request.Form("textfield")
 if ubbHtml <>"" then
  htmlCode = dvHTMLCode(ubbHtml)
 else
  '儲存資料
 end if
else
 response.Write("未提交內容")
end if

' 我們在顯示時用到
response.Write(dvHTMLEncode(htmlCode)) '這樣就可以完美的過濾破壞資料或頁面效果的代碼
function dvHTMLEncode(byval fString)
 if isnull(fString) or trim(fString)="" then
  dvHTMLEncode=""
  exit function
 end if
    fString = replace(fString, ">", "&gt;")
    fString = replace(fString, "<", "&lt;")

    fString = Replace(fString, CHR(32), "&nbsp;")
    fString = Replace(fString, CHR(9), "&nbsp;")
    fString = Replace(fString, CHR(34), "&quot;")
    fString = Replace(fString, CHR(39), "&#39;")
    fString = Replace(fString, CHR(13), "")
    fString = Replace(fString, CHR(10) & CHR(10), "</P><P> ")
    fString = Replace(fString, CHR(10), "<BR> ")

    dvHTMLEncode = fString
end function
'本站原創轉載註明www.111cn.net

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