常见爬虫UA

1.百度蜘蛛Baiduspider
PC：
Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
移动：
Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X)
AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)

2.谷歌蜘蛛Googlebot
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Google图片搜索
Googlebot-Image/1.0

3.必应蜘蛛bingbot
Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)

4.雅虎蜘蛛Yahoo
雅虎英文
Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)
雅虎中国
Mozilla/5.0 (compatible; Yahoo! Slurp China; http://misc.yahoo.com.cn/help.html)

5.搜狗蜘蛛Sogou News Spider
  Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)
搜狗图片
http://pic.sogou.com
Sogou Pic Spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07)

6.360蜘蛛 360Spider
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0);
360网站安全检测
360spider (http://webscan.360.cn)

7.MSN蜘蛛msnbot-media
*msnbot/1.0 (+http://search.msn.com/msnbot.htm”)

8.有道蜘蛛YoudaoBot
Mozilla/5.0 (compatible; YoudaoBot/1.0; http://www.youdao.com/help/webmaster/spider/;)

9.宜搜蜘蛛EasouSpider
Mozilla/5.0 (compatible; EasouSpider; +http://www.easou.com/search/spider.html)

10.七牛
qiniu-imgstg-spider-1.0