用python编写的抓京东商品价格的爬虫

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用python编写的抓京东商品价格的爬虫

闲着没事尝试抓一下京东的数据，需要使用到的库有：BeautifulSoup，urllib2，在Python2下测试通过

from creepy import Crawler

from BeautifulSoup import BeautifulSoup

import urllib2

import json

class MyCrawler(Crawler):

    def process_document(self, doc):

        if doc.status == 200:

            print '[%d] %s' % (doc.status, doc.url)

            try:

                soup = BeautifulSoup(doc.text.decode('gb18030').encode('utf-8'))

            except Exception as e:

                print e

                soup = BeautifulSoup(doc.text)

            print soup.find(id="product-intro").div.h1.text

            url_id=urllib2.unquote(doc.url).decode('utf8').split('/')[-1].split('.')[0]

            f = urllib2.urlopen('http://p.3.cn/prices/get?skuid=J_'+url_id,timeout=5)

            price=json.loads(f.read())

            f.close()

            print price[0]['p']

        else:

            pass

crawler = MyCrawler()

crawler.set_follow_mode(Crawler.F_SAME_HOST)

crawler.set_concurrency_level(16)

crawler.add_url_filter('\.(jpg|jpeg|gif|png|js|css|swf)$')

crawler.crawl('http://item.jd.com/982040.html')

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