可以爬取牛客网 [面经汇总](https://www.nowcoder.com/interview/center) 页面下**面试宝典**部分教程(如:[Java工程师面试宝典](https://www.nowcoder.com/issue/tutorial?tutorialId=94)),并且转换成 pdf 文件,方便打印出来学习。
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