python利用urllib实现爬取京东网站商品图片的爬虫实例
本例程使用urlib实现的,基于python2.7版本,采用beautifulsoup进行网页分析,没有第三方库的应该安装上之后才能运行,我用的IDE是pycharm,闲话少说,直接上代码!
# -*- coding: utf-8 -* import re import os import urllib import urllib2 from bs4 import BeautifulSoup def craw(url,page): html1=urllib2.urlopen(url).read() html1=str(html1) soup=BeautifulSoup(html1,'lxml') imagelist=soup.select('#J_goodsList > ul > li > div > div.p-img > a > img') namelist=soup.select('#J_goodsList > ul > li > div > div.p-name > a > em') #pricelist=soup.select('#plist > ul > li > div > div.p-price > strong') #print pricelist path = "E:/{}/".format(str(goods)) if not os.path.exists(path): os.mkdir(path) for (imageurl,name) in zip(imagelist,namelist): name=name.get_text() imagename=path + name +".jpg" imgurl="http:"+str(imageurl.get('data-lazy-img')) if imgurl == 'http:None': imgurl = "http:" + str(imageurl.get('src')) try: urllib.urlretrieve(imgurl,filename=imagename) except: continue ''' #J_goodsList > ul > li:nth-child(1) > div > div.p-img > a > img #plist > ul > li:nth-child(1) > div > div.p-name.p-name-type3 > a > em #plist > ul > li:nth-child(1) > div > div.p-price > strong:nth-child(1) > i ''' if __name__ == "__main__": goods=raw_input('please input the goos you want:') pages=input('please input the pages you want:') count =0.0 for i in range(1,int(pages+1),2): url="https://search.jd.com/Search?keyword={}&enc=utf-8&qrst=1&rt=1&stop=1&vt=2&suggest=1.def.0.T06&wq=diann&page={}".format(str(goods),str(i)) craw(url,i) count += 1 print 'work completed {:.2f}%'.format(count/int(pages)*100)
图片的命名为商品的名称,京东商品图片地址的属性很可能会有所变动,所以大家进行编写的时候应该举一反三,灵活运用!
这是我下载下来的手机类图片文件的截图:
我本地的爬取的速度很快,不到一分钟就能爬取100页上千个商品的图片!
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