1、使用工具:

Python3.5

BeautifulSoup

2、抓取网站：

csdn首页文章列表 http://blog.csdn.net/

3、分析网站文章列表代码：



4、实现抓取代码：

__author__ = 'Administrator'

import urllib.request

import re

from bs4 import BeautifulSoup

########################################################

#

#              抓取csdn首页文章http://blog.csdn.net/?&page=1

#

#             参数baseUrl是要访问的网站地址

#

########################################################

class CsdnUtils(object):

    def __init__(self):

        user_agent='Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'

        self.headers ={'Cache-Control':'max-age=0',

                        'Connection':'keep-alive',

                        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',

                        'User-Agent':user_agent,

                        }

        self.contentAll=set()

    def getPage(self,url=None):

        request=urllib.request.Request(url,headers=self.headers)

        response=urllib.request.urlopen(request)

        soup=BeautifulSoup(response.read(),"html.parser")

        #print(soup.prettify())

        return soup

    def parsePage(self,url=None,page_num=None):

        soup=self.getPage(url)

        itemBlog=soup.find_all('dl','blog_list clearfix')

        cnArticle=CsdnUtils

        print("========================第",page_num,"页======================================")

        for i,itemSingle in enumerate(itemBlog):

            cnArticle.num=i

            cnArticle.author=itemSingle.find('a','nickname').string

            cnArticle.postTime=itemSingle.find('label').string

            cnArticle.articleView=itemSingle.find('em').string

            cnArticle.title=itemSingle.find('h3',"tracking-ad").string

            cnArticle.url=itemSingle.find("h3").find("a").get("href")

            print("数据：",cnArticle.num+1,'\t',cnArticle.author,'\t',cnArticle.postTime,'\t',cnArticle.articleView,'\t',cnArticle.title,'\t',cnArticle.url)

#######     执行    ########

if __name__ =="__main__":

    #要抓取的网页地址'http://blog.csdn.net/?&page={}'.format(i+1),i+1)

    url = "http://blog.csdn.net"

    cnblog=CsdnUtils()

    for i in range(0,2):

        cnblog.parsePage(url,i+1)

5、执行结果：