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anjuke.py
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anjuke.py
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# -*- coding: utf-8 -*-
from collections import deque
from bs4 import BeautifulSoup
import random
import requests
import time
city_reference = {'Bei Jing': u'北京', 'Shang Hai': u'上海', 'Guang Zhou': u'广州', 'Shen Zhen': u'深圳', 'Tian Jin': u'',
'Hang Zhou': u'杭州', 'Nan Jing': u'南京', 'Ji Nan': u'济南', 'Chong Qing': u'重庆', 'Qing Dao': u'青岛',
'Da Lian': u'大连', 'Ning Bo': u'宁波', 'Xia Men': u'厦门', 'Wu Han': u'武汉'}
class AnJuKe(object):
def __init__(self, city, website):
print u'正在初始化爬虫...'
self.city = city
self.website = website
self.root_url = 'http://' + self.city.lower().replace(" ", "") + self.website
self.status_code = requests.get(self.root_url).status_code
self.spider_pipeline = deque()
self.add_to_pipeline(self.root_url)
def __new__(cls, *args, **kwargs):
print u'正在创建新的爬虫...'
return object.__new__(cls, *args, **kwargs)
def __del__(self):
print u'{0}的房价抓取完毕!'.format(city_reference[self.city])
@property
def get_current_time(self):
return time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))
def add_to_pipeline(self, link):
self.spider_pipeline.append(link)
def pop_from_pipeline(self):
return self.spider_pipeline.popleft()
def pipeline_length(self):
return len(self.spider_pipeline)
def pipeline_is_empty(self):
return len(self.spider_pipeline) is 0
def worker(self):
print u'正在抓取{0}的房价...'.format(city_reference[self.city])
current_link = self.pop_from_pipeline()
headers = {
'Host': self.city.lower().replace(" ", "") + self.website,
'Referer': self.root_url,
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(current_link, headers=headers)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
navigation_bar = soup.find(name='div', attrs={'id': 'glbNavigation'})
for a in navigation_bar.find_all(name='a', attrs={'class': 'a_navnew'})[1:4]:
self.add_to_pipeline(a['href'])
self.sub_worker()
def sub_worker(self):
self.crawl_from_new_house_page()
self.crawl_from_second_house_page()
self.crawl_from_renting_house_page()
def crawl_from_new_house_page(self):
current_sub_link = self.pop_from_pipeline()
crawl_link = current_sub_link + '?from=navigation'
headers = {
'Host': current_sub_link[7:][:-1],
'Referer': self.root_url + '/',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
next_link = soup.find(name='a', attrs={'class': 'next-page next-link'})['href']
counter = 1
with open('anjuke_new_house/{0}.txt'.format(self.city+str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_new_house_page(current_sub_link, link, next_link, counter)
def recursive_crawl_from_new_house_page(self, root_link, pre_link, link, counter):
current_sub_link = link
crawl_link = current_sub_link
headers = {
'Host': root_link[7:][:-1],
'Referer': pre_link,
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
try:
next_link = soup.find(name='a', attrs={'class': 'next-page next-link'})['href']
counter += 1
with open('anjuke_new_house/{0}.txt'.format(self.city+str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_new_house_page(root_link, link, next_link, counter)
except TypeError:
pass
def crawl_from_second_house_page(self):
current_sub_link = self.pop_from_pipeline()
crawl_link = current_sub_link + '?from=navigation'
headers = {
'Host': self.city.lower().replace(" ", "") + self.website,
'Referer': self.root_url + '/',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
next_link = soup.find(name='a', attrs={'class': 'aNxt'})['href']
counter = 1
with open('anjuke_second_house/{0}.txt'.format(self.city+str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_second_house_page(current_sub_link, link, next_link, counter)
def recursive_crawl_from_second_house_page(self, root_link, pre_link, link, counter):
current_sub_link = link
crawl_link = current_sub_link
headers = {
'Host': self.city.lower().replace(" ", "") + self.website,
'Referer': pre_link,
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
try:
next_link = soup.find(name='a', attrs={'class': 'aNxt'})['href']
counter += 1
with open('anjuke_second_house/{0}.txt'.format(self.city + str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_second_house_page(root_link, link, next_link, counter)
except TypeError:
pass
def crawl_from_renting_house_page(self):
current_sub_link = self.pop_from_pipeline()
crawl_link = current_sub_link + '?from=navigation'
headers = {
'Host': current_sub_link[7:][:-1],
'Referer': self.root_url + '/',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
next_link = soup.find(name='a', attrs={'class': 'aNxt'})['href']
counter = 1
with open('anjuke_renting_house/{0}.txt'.format(self.city + str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_renting_house_page(current_sub_link, link, next_link, counter)
def recursive_crawl_from_renting_house_page(self, root_link, pre_link, link, counter):
current_sub_link = link
crawl_link = current_sub_link
headers = {
'Host': root_link[7:][:-1],
'Referer': pre_link,
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu '
'Chromium/50.0.2661.102 Chrome/50.0.2661.102 Safari/537.36'
}
response = requests.get(crawl_link, headers=headers)
print u'当前爬取网址 {0}'.format(crawl_link)
print u'当前爬取状态码{0}'.format(response.status_code)
soup = BeautifulSoup(response.text, 'lxml', from_encoding=response.encoding)
link = current_sub_link
try:
next_link = soup.find(name='a', attrs={'class': 'aNxt'})['href']
counter += 1
with open('anjuke_renting_house/{0}.txt'.format(self.city + str(counter)), 'w+') as fp:
fp.write(response.text.encode('utf-8'))
self.recursive_crawl_from_renting_house_page(root_link, link, next_link, counter)
except TypeError:
pass
def anti_crawl(self):
time.sleep(random.randint(1, 2))
def run(self):
print self.get_current_time
print u'正在连接{0}子网址，响应状态码为{1}'.format(city_reference[self.city], self.status_code)
if self.status_code == 200:
self.worker()
else:
print u'{0}子网址连接错误'.format(city_reference[self.city])