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">
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。
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