在爬取网站内容的时候,最常遇到的问题是:网站对IP有限制,会有防抓取功能,最好的办法就是IP轮换抓取(加代理) 下面来说一下Scrapy如何配置代理,进行抓取 1.在Scrapy工程下新建“middlewares.py” # Importing base64 library because we'll need it ONLY in case if the proxy we are going to use requires authentication import base64 # Star…
反反爬虫相关机制 Some websites implement certain measures to prevent bots from crawling them, with varying degrees of sophistication. Getting around those measures can be difficult and tricky, and may sometimes require special infrastructure. Please consider…
# -*- coding: utf-8 -*- # Scrapy settings for maitian project # # For simplicity, this file contains only settings considered important or # commonly used. You can find more settings consulting the documentation: # # https://doc.scrapy.org/en/latest/…
在Scrapy框架中的items.py的作用 1.可以预先定义好要爬取的字段 items.py import scrapy class TencentItem(scrapy.Item): # define the fields for your item here like: # name = scrapy.Field() """定义好字段,并不代表真正的值,只是占一个位置,用的时候直接赋值就行""" position =…