ColdHan

python 爬虫抓取亚马逊数据

朋友说爬当当和京东和容易,我没有去爬取过,因此不好评论。但是亚马逊确实是下了些反扒功夫的。可能我们写着好好的代码运行运行着就返回不了正确结果了。

 

可以参考:

亚马逊是如何反爬虫的?

https://www.zhihu.com/question/27768393/answer/114784964

 

如果我们在请求时带上一个变化着的header,成功率就能大大的增加了

headers = randHeader()
rHtml = requests.get(url, headers=headers, timeout=20)
...

之后可以使用PyQuery 来进行html解析抓取元素

 1 #生成随机头
 2 def randHeader():
 3     head_connection = [\'Keep-Alive\', \'close\']
 4     head_accept = [\'text/html, application/xhtml+xml, */*\']
 5     head_accept_language = [\'zh-CN,fr-FR;q=0.5\', \'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3\']
 6     head_user_agent = [\'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko\',
 7                        \'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36\',
 8                        \'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; rv:11.0) like Gecko)\',
 9                        \'Mozilla/5.0 (Windows; U; Windows NT 5.2) Gecko/2008070208 Firefox/3.0.1\',
10                        \'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070309 Firefox/2.0.0.3\',
11                        \'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070803 Firefox/1.5.0.12\',
12                        \'Opera/9.27 (Windows NT 5.2; U; zh-cn)\',
13                        \'Mozilla/5.0 (Macintosh; PPC Mac OS X; U; en) Opera 8.0\',
14                        \'Opera/8.0 (Macintosh; PPC Mac OS X; U; en)\',
15                        \'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080219 Firefox/2.0.0.12 Navigator/9.0.0.6\',
16                        \'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0)\',
17                        \'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)\',
18                        \'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E)\',
19                        \'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Maxthon/4.0.6.2000 Chrome/26.0.1410.43 Safari/537.1 \',
20                        \'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E; QQBrowser/7.3.9825.400)\',
21                        \'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0 \',
22                        \'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.92 Safari/537.1 LBBROWSER\',
23                        \'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; BIDUBrowser 2.x)\',
24                        \'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.11 TaoBrowser/3.0 Safari/536.11\']
25 
26     header = {
27         \'Connection\': head_connection[0],
28         \'Accept\': head_accept[0],
29         \'Accept-Language\': head_accept_language[1],
30         \'User-Agent\': head_user_agent[random.randrange(0, len(head_user_agent))]
31     }
32     return header
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