使用python实现抓取腾讯视频所有电影的爬虫


						用python实现的抓取腾讯视频所有电影的爬虫





# -*- coding: utf-8 -*-

import re

import urllib2

from bs4import BeautifulSoup

import string, time

import pymongo

NUM   =0 #全局变量,电影数量

m_type = u'' #全局变量,电影类型

m_site = u'qq' #全局变量,电影网站

#根据指定的URL获取网页内容

def gethtml(url):

  req = urllib2.Request(url)

  response = urllib2.urlopen(req)

  html = response.read()

  return html

#从电影分类列表页面获取电影分类

def gettags(html):

  global m_type

  soup = BeautifulSoup(html)   #过滤出分类内容

  #print soup

  #<ulclass="clearfix _group" gname="mi_type" gtype="1">

  tags_all = soup.find_all('ul', {'class' :'clearfix _group' ,'gname' :'mi_type'})

  #print len(tags_all), tags_all

  #print str(tags_all[1]).replace('\n','')

  #<a _hot="tag.sub" class="_gtag _hotkey" href="http://v.qq.com/list/1_0_-1_-1_1_0_0_20_0_-1_0.html" title="动作" tvalue="0">动作</a>

  re_tags = r'<a _hot=\"tag\.sub\" class=\"_gtag _hotkey\" href=\"(.+?)\" title=\"(.+?)\" tvalue=\"(.+?)\">.+?</a>'

  p = re.compile(re_tags, re.DOTALL)

  tags = p.findall(str(tags_all[0]))

  if tags:

    tags_url = {}

    #print tags

    for tagin tags:

      tag_url = tag[0].decode('utf-8')

      #print tag_url

      m_type = tag[1].decode('utf-8')

      tags_url[m_type] = tag_url

  else:

      print"Not Find"

  return tags_url

#获取每个分类的页数

def get_pages(tag_url):

  tag_html = gethtml(tag_url)

  #divclass="paginator

  soup = BeautifulSoup(tag_html)   #过滤出标记页面的html

  #print soup

  #<divclass="mod_pagenav" id="pager">

  div_page = soup.find_all('div', {'class' :'mod_pagenav','id' :'pager'})

  #print div_page #len(div_page), div_page[0]

  #<aclass="c_txt6" href="http://v.qq.com/list/1_2_-1_-1_1_0_24_20_0_-1_0.html" title="25"><span>25</span></a>

  re_pages = r'<a class=.+?><span>(.+?)</span></a>'

  p = re.compile(re_pages, re.DOTALL)

  pages = p.findall(str(div_page[0]))

  #print pages

  if len(pages) >1:

    return pages[-2]

  else:

    return 1

def getmovielist(html):

  soup = BeautifulSoup(html)

  #<ulclass="mod_list_pic_130">

  divs = soup.find_all('ul', {'class' :'mod_list_pic_130'})

  #print divs

  for div_htmlin divs:

    div_html = str(div_html).replace('\n','')

    #print div_html

    getmovie(div_html)

def getmovie(html):

  global NUM

  global m_type

  global m_site

  re_movie = r'<li><a class=\"mod_poster_130\" href=\"(.+?)\" target=\"_blank\" title=\"(.+?)\"><img.+?</li>'

  p = re.compile(re_movie, re.DOTALL)

  movies = p.findall(html)

  if movies:

    conn = pymongo.Connection('localhost',27017)

    movie_db = conn.dianying

    playlinks = movie_db.playlinks

    #print movies

    for moviein movies:

      #print movie

      NUM +=1

      print"%s : %d" % ("=" *70, NUM)

      values = dict(

        movie_title = movie[1],

        movie_url  = movie[0],

        movie_site   = m_site,

        movie_type   = m_type

        )

      print values

      playlinks.insert(values)

      print"_" *70

      NUM +=1

      print"%s : %d" % ("=" *70, NUM)

  #else:

  #  print"Not Find"

def getmovieinfo(url):

  html = gethtml(url)

  soup = BeautifulSoup(html)

  #pack pack_album album_cover

  divs = soup.find_all('div', {'class' :'pack pack_album album_cover'})

  #print divs[0]

  #<a href="http://www.tudou.com/albumplay/9NyofXc_lHI/32JqhiKJykI.html" target="new" title="《血滴子》独家纪录片" wl="1"> </a>

  re_info = r'<a href=\"(.+?)\" target=\"new\" title=\"(.+?)\" wl=\".+?\"> </a>'

  p_info = re.compile(re_info, re.DOTALL)

  m_info = p_info.findall(str(divs[0]))

  if m_info:

    return m_info

  else:

    print"Not find movie info"

  return m_info

def insertdb(movieinfo):

  global conn

  movie_db = conn.dianying_at

  movies = movie_db.movies

  movies.insert(movieinfo)

if __name__ =="__main__":

  global conn

  tags_url ="http://v.qq.com/list/1_-1_-1_-1_1_0_0_20_0_-1_0.html"

  #print tags_url

  tags_html = gethtml(tags_url)

  #print tags_html

  tag_urls = gettags(tags_html)

  #print tag_urls

  for urlin tag_urls.items():

    print str(url[1]).encode('utf-8') #,url[0]

    maxpage =int(get_pages(str(url[1]).encode('utf-8')))

    print maxpage

    for xin range(0, maxpage):

      #http://v.qq.com/list/1_0_-1_-1_1_0_0_20_0_-1_0.html

      m_url = str(url[1]).replace('0_20_0_-1_0.html','')

      movie_url ="%s%d_20_0_-1_0.html" % (m_url, x)

      print movie_url

      movie_html = gethtml(movie_url.encode('utf-8'))

      #print movie_html

      getmovielist(movie_html)

      time.sleep(0.1)





总结

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