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百度贴吧scrapy爬去

  • 先爬取列表页每一行的title和url，再去详情页爬去img的url

注意点

  • 猫吧的第一页里面内容被放在<!-- --->注释里面，需要用正则取出来后，再用etree解析，不能直接用scrapy框架的选择器
  • 爬去列表的href中的url链接不完整,只是uri，需要与域名拼接
    • 1：用urlib.parse.urljoin(response.url,uri)
    • 2.直接用response.follow（uri） -我设置了列表页的最大爬去页数，要不爬太久了，可以自行修改max_page.

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