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GuShiWen

Scrapy练习项目，利用Scrapy抓取古诗（唐诗三百首，宋词三百首等），并保存为json格式（不断完善ing）

采用的技术

  • Scrapy爬取网站的基本技术
  • xpath提取网页中的内容
  • dict list str 的相关操作
  • re配合xpath提取网页
  • requests提取网页源码
  • HtmlResponse 转换源码为Scrapy响应对象，从而可以利用Selector

遇到的问题

转换成json数据的时候多了很多无用的空格

  • 在利用xpath提取数据的时候添加[normalize-space()]避免提取空格
  • 将提取到的列表转换成字符串，再strip（）

提取一首诗题目之后根据题目进入到下一个页面提取相对应的内容，使用yield request发现内容不对应

  • Scrapy默认抓取为多线程，使用第三方requests提取网站源码，并用Scrapy的HtmlResponse转换成 Scrapy响应格式,即可正常使用xpath抓取

网站赏析部分有文字图片,提取时自动忽略

  • 利用xpath提取整段源码，然后使用re去除不相关p和a标签，把文字图片的img标签替换成alt属性中的内容

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