Scrapy框架--Requests对象

详解：https://www.cnblogs.com/thunderLL/p/6551641.html

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参考：
Scrapy框架–Requests对象 https://www.cnblogs.com/thunderLL/p/6551641.html
爬虫：Scrapy5 - 选择器Selectors https://www.cnblogs.com/sufei-duoduo/p/5868027.html
Requests and Responses https://scrapy-chs.readthedocs.io/zh_CN/latest/topics/request-response.html
Scrapy爬虫入门教程十一 Request和Response（请求和响应） https://www.jianshu.com/p/461d74641e80