文档介绍：专业资料专业专心专注摘要网络爬虫是一种自动搜集互联网信息的程序。通过网络爬虫不仅能够为搜索引擎采集网络信息,而且可以作为定向信息采集器,定向采集某些网站下的特定信息,如招聘信息,租房信息等。本文通过JAVA实现了一个基于广度优先算法的多线程爬虫程序。本论文阐述了网络爬虫实现中一些主要问题:为何使用广度优先的爬行策略,以及如何实现广度优先爬行;为何要使用多线程,以及如何实现多线程;系统实现过程中的数据存储;网页信息解析等。通过实现这一爬虫程序,可以搜集某一站点的URLs,并将搜集到的URLs存入数据库。【关键字】网络爬虫;JAVA;广度优先;多线程。.SPIDERcancollectdataforsearchengines,alsocanbeaDirectionalinformationcollector,collectsspecificallyinformationsfromsomewebsites,suchasHRinformations,,useJAVAimplementsabreadth-firstalgorithmmulti-:whytousebreadth-firstcrawlingstrategy,andhowtoimplementbreadth-firstcrawling;whytousemulti-threading,andhowtoimplementmulti-thread;datastructure;,andstoreURLsintodatabase.【KEYWORD】SPIDER;JAVA;BreadthFirstSearch;multi-..................................................................................................................1第二章相关技术介绍...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................