The following code is taken from the aspcms system. There are restrictions on obtaining parameter values and sql security filtering parameters. The code is as follows: 'Get parameter value Function getForm(element,ftype)Select case ftypecase getgetForm=trim(request.QueryString (element))case postgetForm=trim(request.Form(element))case bothif isNul(request.QueryString(element)) then getForm=trim(request.Form(element)) else getForm=trim(request.QueryString(element))End SelectgetForm=replace(getForm,CHR(34),)getForm=replace(getForm,CHR(39),') End Function's main function is to obtain parameter values, which is much safer than using request(element) directly. Filter parameters Function filterPara(byVal Para)filterPara=preventSqlin(Checkxss(Para))End FunctionFunction preventSqlin(content)dim sqlStr,sqlArray,i,speStrsqlStr=<|>|%|%27|'|''|;|*|and|exec|dbcc|alter|drop|insert|select|update|delete|count|master|truncate| char|declare|where|set|declare|mid|chrif isNul(content) then Exit FunctionsqlArray=split(sqlStr,|)for i=lbound(sqlArray) to ubound(sqlArray)if instr(lcase(content),sqlArray(i))<>0 thenselect case sqlArray(i)case <:speStr=<case >:speStr=>case ',:speStr ='case ;:speStr=; case else:speStr=end selectcontent=replace(content,sqlArray(i),speStr,1,-1,1)end ifnextpreventSqlin=contentEnd Function'The above parameter filter function is mainly to prevent SQL injection and strengthen protection.