第1章搜索弓I擎总体结构…·…....…........…··II.I搜索弓i擎基本模块…...........…·…····I1.2开发环境·············································21.3搜索弓i擎工作原理...........…·……·····31.3.1网络爬虫····································41.3.2全文索引结构与Lucene实现41.3.3搜索用户界面...…·…........…·······71.3.4计算框架····································81.