Python爬虫(十五)_案例：使用bs4的爬虫

案例：使用BeautifulSoup的爬虫

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

from bs4 import BeautifulSoup

import urllib2
import urllib
import json   #使用json格式存储

def tencent():
url = "http://hr.tencent.com/"

request = urllib2.Request(url+"position.php?&start=10#a")
response = urllib2.urlopen(request)

resHtml = response.read()

output = open('tencent.json', 'w')

html = BeautifulSoup(resHtml, 'lxml')

#创建CSS选择器
result = html.select('tr[class="even"]')
result2 = html.select('tr[class="odd"]')
result += result2

print(result)
items = []
for site in result:
item = {}

name = site.select('td a')[0].get_text()
dataLink = site.select('td a')[0].attrs['href']
catalog = site.select('td')[1].get_text()
recruitNumber = site.select('td')[2].get_text()
workLocation = site.select('td')[3].get_text()
publishTime = site.select('td')[4].get_text()

item['name'] = name
item['datailLink'] = url + dataLink
item['catalog'] = catalog
item['recruitNumber'] = recruitNumber
item['publishTime'] = publishTime

items.append(item)
#禁用ascii编码，按utf-8编码
line = json.dumps(items, ensure_ascii = False)

output.write(line.encode('utf-8'))

output.close()

if __name__ == '__main__':
tencent()