自动上网抓数据的机器人

在大多数情况下，上网冲浪是件令人愉快的事情。但若是数百上千的超链接摆在你面前，而你又不得不一一点击这些链接、进入相应的网页、手工筛选出每页里你需要的信息、最后再将这些信息编进数据库中、....，你将做

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