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用python编写的抓京东商品价格的爬虫 仅供参考学习

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')

Python运行结果：

[200]

三星 HM1200 原装蓝牙耳机 黑色

118.00

[200]

【年终热卖】嘉源手机N699 2.8寸双屏双卡双待双电2000毫安翻盖手机 黑

268.00