使用bs4爬取小说

使用bs4爬取小说

#需求：爬取三国演义小说所有的章节和章节内容
import  requests
from bs4 import  BeautifulSoup
if __name__=="__main__":
    #对首页的页面数据解析爬取
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36'
    }
    url = 'https://www.shicimingju.com/book/sanguoyanyi.html'
    response = requests.get(url=url,headers=headers)
    response.encoding = response.apparent_encoding
    page_text = response.text

    #在首页中解析出章节的标题和详情页的url
    #1.实例化BeautifulSoup对象，需要将页面源码对象加载到该对象中
    soup = BeautifulSoup(page_text,'lxml')
    #解析章节标题和详情页的url
    li_list = soup.select('.book-mulu > ul > li')
    fp = open('./sanguo.txt','w',encoding='utf-8')
    for li in li_list:
        title = li.a.string
        detail_url = 'https://www.shicimingju.com'+li.a['href']
        #对详情页发起请求，解析出章节内容
        #解决乱码使用response = requests.get(url=url,headers=headers)
        #          response.encoding = response.apparent_encoding
        #response.apparent_encoding他是一个备用编码方式,他会根据内容自动匹配给你个合适的编码方式
        detail_response = requests.get(url=detail_url, headers=headers)
        detail_response.encoding = detail_response.apparent_encoding
        detail_page_text = detail_response.text
        #解析出详情页中相关的章节内容
        detail_soup = BeautifulSoup(detail_page_text,'lxml')
        div_tag = detail_soup.find('div',class_='chapter_content')
        #解析到了章节的内容
        content = div_tag.text
        fp.write(title+":"+content+'\n')
        print(title,'爬取成功。。。')