Python爬取三国演义的实现方法 - 哈喽比特

327次阅读 | 发布于5年以前

本文的爬虫教程分为四部：

 1.从哪爬 where

 2.爬什么 what

** **3.怎么爬 how

 4.爬了之后信息如何保存 save

一、从哪爬

三国演义

二、爬什么

三国演义全文

三、怎么爬

在Chrome页面打开F12，就可以发现文章内容在节点


    <div id="con" class="bookyuanjiao">

只要找到这个节点，然后把内容写入到一个html文件即可。


    content = soup.find("div", {"class": "bookyuanjiao", "id": "con"})

四、爬了之后如何保存

主要就是拿到内容，拼接到一个html文件，然后保存下来就可以了。


    #!usr/bin/env 
    # -*-coding:utf-8 -*-
    import urllib2
    import os
    from bs4 import BeautifulSoup as BS
    import locale
    import sys
    from lxml import etree
    import re

    reload(sys)
    sys.setdefaultencoding('gbk')

    sub_folder = os.path.join(os.getcwd(), "sanguoyanyi")
    if not os.path.exists(sub_folder):
      os.mkdir(sub_folder)

    path = sub_folder

    # customize html as head of the articles
    input = open(r'0.html', 'r')
    head = input.read()

    domain = 'http://www.shicimingju.com/book/sanguoyanyi.html'
    t = domain.find(r'.html')
    new_domain = '/'.join(domain.split("/")[:-2])
    first_chapter_url = domain[:t] + "/" + str(1) + '.html'
    print first_chapter_url

    # Get url if chapter lists
    req = urllib2.Request(url=domain)
    resp = urllib2.urlopen(req)
    html = resp.read()
    soup = BS(html, 'lxml')
    chapter_list = soup.find("div", {"class": "bookyuanjiao", "id": "mulu"})
    sel = etree.HTML(str(chapter_list))
    result = sel.xpath('//li/a/@href')

    for each_link in result:
      each_chapter_link = new_domain + "/" + each_link
      print each_chapter_link
      req = urllib2.Request(url=each_chapter_link)
      resp = urllib2.urlopen(req)
      html = resp.read()

      soup = BS(html, 'lxml')
      content = soup.find("div", {"class": "bookyuanjiao", "id": "con"})
      title = soup.title.text
      title = title.split(u'_《三国演义》_诗词名句网')[0]

      html = str(content)
      html = head + html + "</body></html>"

      filename = path + "\\" + title + ".html"
      print filename
      # write file
      output = open(filename, 'w')
      output.write(html)
      output.close()

0.html的内容如下


    <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body>

总结

以上就是利用Python爬取三国演义的实现方法，希望对大家学习python能有所帮助，如果有疑问大家可以留言交流。