asp 防采集代码 二

YPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.**w*3.org/TR/REC-html40/loose.dtd">

user_agent=Request.ServerVariables("HTTP_USER_AGENT")
http_reffer=Request.ServerVariables("HTTP_REFERER")
server_name=Request.ServerVariables("SERVER_NAME")
'检查当前用户是否是蜘蛛人
function check(user_agent)
allow_agent=split("Baiduspider,Scooter,ia_archiver,Googlebot,FAST-WebCrawler,MSNBOT,Slurp",",")
check_agent=false
for agenti=lbound(allow_agent) to ubound(allow_agent)
if instr(user_agent,allow_agent(agenti))>0 then
check_agent=true
exit for
end if
next
check=check_agent
end function
if check(user_agent)=False then
if http_reffer="" or left(http_reffer,len("http://"&server_name)+1)"http://"&server_name&"/" then
%>

end if
end if
%>