python - 怎么查看網址做的是什么反爬蟲

問題描述

網址：https://www.nvshens.com/g/22377/，該網站直接游覽器打開然后，點擊圖片右鍵是可以下載的，然后我爬蟲直接請求下來的圖片就已經被屏蔽了，然后我改了headers跟設置了ip代理，還是沒用。但抓包來看也不是動態加載的數據呀?。?！求解答= =

問題解答

妹子挺漂亮的哈。右鍵確實能打開，但是刷新一下就成盜鏈圖片了。一般防盜鏈，服務器端是會檢查請求頭里面的Referer字段，這就是為什么刷新后就不是原圖的原因（刷新后Referer變了）。

img_url = 'https://t1.onvshen.com:85/gallery/21501/22377/s/003.jpg'r = requests.get(img_url, headers={’Referer’:'https://www.nvshens.com/g/22377/'}).contentwith open('00.jpg',’wb’) as f: f.write(r)回答2：

獲取圖片時抓包看漏什么參數沒。

光顧著看網站內容，差點忘記了正式了。你可以把你請求的信息全部按照

然后在試試

Referer 照這網站的設計應該是各別的頁面會比較符合假裝是人的行為，而并不是用單一的Referer以下是完整能跑的代碼，抓18頁所有的圖片

# Putting all togetherdef url_guess_src_large (u): return ('https://www.nvshens.com/img.html?img=' + ’/’.join(u.split(’/s/’)))# 下載函數def get_img_using_requests(url, fn ): import shutil headers [’Referer’] = url_guess_src_large(url) #'https://www.nvshens.com/g/22377/' print (headers) response = requests.get(url, headers = headers, stream=True) with open(fn, ’wb’) as out_file:shutil.copyfileobj(response.raw, out_file) del responseimport requests# 用xpath擷取內容from lxml import etreeurl_ = ’https://www.nvshens.com/g/22377/{p}.html’ headers = { 'Connection' : 'close', # one way to cover tracks 'User-Agent' : 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2900.1 Iron Safari/537.36}'}for i in range(1,18+1): url = url_.format(p=i) r = requests.get(url, headers=headers) html = requests.get(url,headers=headers).content.decode(’utf-8’) selector = etree.HTML(html) xpaths = ’//*[@id='hgallery']/img/@src’ content = [x for x in selector.xpath(item)] urls_2get = [url_guess_src_large(x) for x in content] filenames = [os.path.split(x)[0].split(’/gallery/’)[1].replace('/','_') + '_' + os.path.split(x)[1] for x in urls_2get] for i, x in enumerate(content):get_img_using_requests (content[i], filenames[i])