asp終極防范SQL注入漏洞

下面給出4個函數，足夠你抵擋一切SQL注入漏洞！讀懂代碼，你就能融會貫通。

注意要對所有的request對象進行過濾：包括 request.cookie, request.ServerVariables 等等容易被忽視的對象：
復制代碼 代碼如下:
function killn(byval s1) '過濾數值型參數
if not isnumeric(s1) then
killn=0
else
if s1<0 or s1>2147483647 then
killn=0
else
killn=clng(s1)
end if
end if
end function

function killc(byval s1) 過濾貨幣型參數
if not isnumeric(s1) then
killc=0
else
killc=formatnumber(s1,2,-1,0,0)
end if
end function

function killw(byval s1) '過濾字符型參數
if len(s1)=0 then
killw=""
else
killw=trim(replace(s1,"'",""))
end if
end function

function killbad(byval s1) 過濾所有危險字符，包括跨站腳本
If len(s1) = 0 then
killbad=""
else
killbad = trim(replace(replace(replace(replace(replace(replace(replace(replace(s1,Chr(10), "<br>"), Chr(34), """), ">", ">"), "<", "<"), "&", "&"),chr(39),"'"),chr(32)," "),chr(13),""))
end if
end function