Python爬虫从入门到精通:（7）数据解析3_使用bs4爬取《红楼梦》小说_Python涛哥

爬取红楼梦全篇内容：

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数据解析步骤：章节标题，详情页url，章节内容

通过浏览器开发者工具中，我们得知。小说章节的标题，和每一张的链接，都在

标签中。

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现在我们用bs4把这2个数据提取出来。

import requests
from bs4 import BeautifulSoup

main_url = 'https://www.shicimingju.com/book/hongloumeng.html'
reponse = requests.get(url=main_url)
reponse.encoding = 'utf-8'
page_text = reponse.text
soup = BeautifulSoup(page_text, 'lxml')

定位到了

标签，最好用层级标签:

a_list = soup.select('.book-mulu > ul > li')

章节标题：定位到的所有的符合要求的a标签

title = a.string

每个章节点进去看的地址：

detail_url = 'https://www.shicimingju.com/' +a.a['href']

对详情页发起请求解析出章节内容：

reponse = requests.get(url=detail_url, headers=headers)
reponse.encoding = 'utf-8'
page_text_detail = reponse.text

分析后，我们可以看到，小说的篇幅内容都在

内。通过属性定位，我们可以取到数据：

div_tag = soup.find('div', class_="chapter_content")
content = div_tag.text

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最后，我们需要保存下数据。

完整代码如下：

# 爬取红楼梦全篇内容：
headers = {
     
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36'
}
main_url = 'https://www.shicimingju.com/book/hongloumeng.html'
reponse = requests.get(url=main_url)
reponse.encoding = 'utf-8'
page_text = reponse.text
print(page_text)

# 存储
f = open('hongloumeng.txt', 'a+', encoding='utf-8')

soup = BeautifulSoup(page_text, 'lxml')
a_list = soup.select('.book-mulu > ul > li')
for a in a_list:
    title = a.string
    detail_url = 'https://www.shicimingju.com/' + a.a['href']
    # 对详情页发起请求解析出章节内容
    reponse = requests.get(url=detail_url, headers=headers)
    reponse.encoding = 'utf-8'
    page_text_detail = reponse.text
    soup = BeautifulSoup(page_text_detail, 'lxml')

    div_tag = soup.find('div', class_="chapter_content")
    content = div_tag.text
    f.write(title + ':' + content + '\n')
    print(title, '保存成功！！！')
f.close()

等待爬取完毕后，我们就看到了整篇内容！

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