Python爬取三国演义的实现方法_Python

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

1	`<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。

1	`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

1	`<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。

Python爬取三国演义的实现方法

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