从猎聘网爬取相关招聘信息和评论信息，网络爬虫(又被称为网页蜘蛛，网络机器人，在FOAF社区中间，更经常的称为网页追逐者)，是一种按照一定的规则，自动的抓取万维网信息的程序或者脚本。(From the recruitment network crawling relevant recruitment information.Web crawlers, also known as web spiders, web robots, more commonly known as web chasers in the FOAF community, are programs or scr ipts that automatically crawl the World Wide Web in accordance with certain rules.)