使用Python的各种爬虫真实案例源码资源

上传者: yanbober | 上传时间: 2024-11-06 14:10:32 | 文件大小: 58KB | 文件类型: ZIP
这是一个基于Python的爬虫案例,使用了Scrapy框架和XPath表达式。它可以爬取指定网站的新闻标题、发布时间和内容,并将结果保存到数据库中。通过设置爬虫的起始链接和规则,自动遍历网页,提取所需信息。同时,使用多线程和分布式技术,提高了爬取效率。此外,还通过设置请求头和代理IP,模拟真实用户行为,防止被网站封禁。最后,该爬虫还可以定期自动更新数据,并实现数据可视化展示,方便用户查看和分析。通过该案例,用户可以学习到爬虫的基本原理和常用技术,实现定向爬取和数据挖掘。

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