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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转载于:https://www.cnblogs.com/ColdHan/p/6841216.html