python爬虫练习2——豆瓣读书

豆瓣网站禁止了爬虫爬取，需要对其进行简单的反爬虫处理后才可进行提取。

https://book.douban.com/robots.txt

网址：豆瓣读书 (douban.com)

F12，找到 User-agent ，在爬虫程序中进行添加。

import requests
import re

for i in range (1,5):
    url = 'https://book.douban.com/series/39838?page='+str(i)
    ua = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36 Edg/91.0.864.59'}
    
    print('第'+str(i)+'页：',url)
    r =  requests.get(url ,headers = ua , timeout = 30)
    
    pat = 'title=(.*?)onclick'
    til = re.compile(pat,re.S).findall(r.text)
    print(til)
    print('---------------')

 

看着比较乱，我们进行加工处理：

import requests
import re

for i in range (1,5):
    url = 'https://book.douban.com/series/39838?page='+str(i)
    ua = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36 Edg/91.0.864.59'}
    
    print('第'+str(i)+'页：',url)
    r =  requests.get(url ,headers = ua , timeout = 30)
    
    pat = 'title=(.*?)onclick'
    til = re.compile(pat,re.S).findall(r.text)
    #print(til)

    for item in til:
        
        print(str(item))
        print('--------------')

 

 这样就好多了