判断 this.Request.UserAgent
Google的蜘蛛: Googlebot
百度的蜘蛛:baiduspider
Yahoo的蜘蛛:Yahoo Slurp
MSN的蜘蛛:Msnbot
Altavista的蜘蛛:Scooter
Lycos的蜘蛛: Lycos_Spider_(T-Rex)
Alltheweb的蜘蛛: FAST-WebCrawler/
INKTOMI的蜘蛛: Slurp
判断 this.Request.UserAgent
Google的蜘蛛: Googlebot
百度的蜘蛛:baiduspider
Yahoo的蜘蛛:Yahoo Slurp
MSN的蜘蛛:Msnbot
Altavista的蜘蛛:Scooter
Lycos的蜘蛛: Lycos_Spider_(T-Rex)
Alltheweb的蜘蛛: FAST-WebCrawler/
INKTOMI的蜘蛛: Slurp