Python how to climb the download link of Aitu.com material

Python how to climb Aitu.com material download link, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

Preface

Usually crawl pictures directly, but sometimes you only want individual pictures. What should I do?

Project goal

Crawl the download address of Aitu.com material

By clicking on the material to enter the material details page, you can see the local download address and copy more download address links for the material:

Http://www.aiimg.com/sucai.php?open=1&aid=126632&uhash=70a6d2ffc358f79d9cf71392http://www.aiimg.com/sucai.php?open=1&aid=126630&uhash=99b07c347dc24533ccc1c144http://www.aiimg.com/sucai.php?open=1&aid=126634&uhash=d7e8f7f02f57568e280190b4

The aid of each link is different. This should be each ID of the material. What is the uhash behind it?

Originally thought whether there is interface data in the web page data can directly find this parameter, search in the developer tool does not have this parameter, check to see if there is this download link in the web source code.

If we have this link, we can download it directly after we get it.

We can find that all the data we need is in the tag of the web page, and we request the web page to get the returned data.

Import requestsurl = 'http://www.aiimg.com/list.php?tid=1&ext=0&free=2&TotalResult=5853&PageNo=1'headers = {' User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36'} response = requests.get (url=url, headers=headers) print (response.text)

Parsing crawling data

Import parselselector = parsel.Selector (response.text) lis = selector.css ('.imglist _ d ul li a::attr (href)'). Getall () for li in lis: num_id = li.replace ('.html','). Split ('/') [- 1] new_url = 'http://www.aiimg.com/sucai.php?aid={}'.format(num_id) response_2 = requests.get (url=new_url) Headers=headers) selector_2 = parsel.Selector (response_2.text) data_url = selector_2.css ('.downlist a.down1::attr (href)'). Get () title = selector_2.css ('.toart a Groupe text'). Get () download_url = 'http://www.aiimg.com' + data_url

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