无法使用selenium找到html元素
我正在从事一个项目，在这个项目中，我必须从一个图像站点中抓取与关键字相关的图像。当我在imgur（我选择的图片站点）上搜索任何关键字时，结果显示为小缩略图，单击打开包含各种图片的主要文章。现在，我的程序在缩略图中列出了各种链接，并逐一打开它们下载其中的所有图像 我的问题是，当我检查文章中的image元素时，它显示该图像在类“.image placeholder”中，但当我通过请求方法下载html时，它没有显示任何可用的此类 其中一个例子是，当我请求文章的response对象时 我得到以下html：无法使用selenium找到html元素,html,python-3.x,selenium,Html,Python 3.x,Selenium,我正在从事一个项目，在这个项目中，我必须从一个图像站点中抓取与关键字相关的图像。当我在imgur（我选择的图片站点）上搜索任何关键字时，结果显示为小缩略图，单击打开包含各种图片的主要文章。现在，我的程序在缩略图中列出了各种链接，并逐一打开它们下载其中的所有图像 我的问题是，当我检查文章中的image元素时，它显示该图像在类“.image placeholder”中，但当我通过请求方法下载html时，它没有显示任何可用的此类 其中一个例子是，当我请求文章的response对象时 我得到以下html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta content="width=device-width,initial-scale=1" name="viewport"/>
<meta content="funny, image, gif, gifs, memes, jokes, image upload, upload image, lol, humor, vote, comment, share, imgur, imgur.com, wallpaper" name="keywords">
<meta content="Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more." name="description">
<meta content="Copyright 2020 Imgur, Inc." name="copyright"/>
<link href="https://s.imgur.com/images/favicon-32x32.png" rel="icon" sizes="32x32" type="image/png"/>
<link href="https://s.imgur.com/images/favicon-96x96.png" rel="icon" sizes="96x96" type="image/png"/>
<link href="https://s.imgur.com/images/favicon-16x16.png" rel="icon" sizes="16x16" type="image/png"/>
<link href="https://s.imgur.com/images/favicon-152.png" rel="apple-touch-icon-precomposed"/>
<meta content="#2cd63c" name="msapplication-TileColor"/>
<meta content="https://s.imgur.com/images/favicon-144.png" name="msapplication-TileImage"/>
<link href="https://m.imgur.com/" media="only screen and (max-width: 640px)" rel="alternate"/>
<meta content="834554521765408b9effdc758b69c5ee" name="p:domain_verify">
<meta content="Imgur" property="og:site_name">
<meta content="12331492" property="fb:admins"/>
<meta content="12301369" property="fb:admins"/>
<meta content="127621437303857" property="fb:app_id"/>
<meta content="imgur://imgur.com/?from=fbreferral" property="al:android:url"/>
<meta content="Imgur" property="al:android:app_name"/>
<meta content="com.imgur.mobile" property="al:android:package"/>
<meta content="imgur://imgur.com/?from=fbreferral" property="al:ios:url"/>
<meta content="639881495" property="al:ios:app_store_id"/>
<meta content="Imgur" property="al:ios:app_name"/>
<meta content="https://imgur.com/" property="al:web:url"/>
<meta content="@imgur" name="twitter:site"/>
<meta content="imgur.com" name="twitter:domain"/>
<meta content="com.imgur.mobile" name="twitter:app:id:googleplay"/>
<meta content="Imgur" property="author"/>
<meta content="Imgur" property="article:author"/>
<meta content="https://www.facebook.com/imgur" property="article:publisher"/>
<title>
Drawing Model (for you all naruto fans) - Imgur
</title>
<meta content="https://imgur.com/gallery/rfEAUDW" data-react-helmet="true" property="og:url"/>
<meta content="https://i.imgur.com/rfEAUDWh.jpg" data-react-helmet="true" name="twitter:image"/>
<link href="https://api.imgur.com/oembed.json?url=https://imgur.com/gallery/rfEAUDW" rel="alternate" title="Drawing Model (for you all naruto fans) - Imgur" type="application/json+oembed"/>
<link href="https://api.imgur.com/oembed.xml?url=https://imgur.com/gallery/rfEAUDW" rel="alternate" title="Drawing Model (for you all naruto fans) - Imgur" type="application/xml+oembed"/>
<meta content="funny" data-react-helmet="true" property="article:tag"/>
<meta content="" data-react-helmet="true" property="article:tag"/>
<meta content="" data-react-helmet="true" property="article:tag"/>
<meta content="" data-react-helmet="true" property="article:tag"/>
<meta content="" data-react-helmet="true" property="article:tag"/>
<meta href="https://imgur.com/gallery/rfEAUDW" rel="canonical"/>
<meta content="none" name="robots"/>
<meta content="600" data-react-helmet="true" property="og:image:width"/>
<meta content="315" data-react-helmet="true" property="og:image:height"/>
<meta content="https://i.imgur.com/rfEAUDW.jpg?fb" data-react-helmet="true" property="og:image"/>
<meta content="article" data-react-helmet="true" property="og:type"/>
<meta content="summary_large_image" data-react-helmet="true" name="twitter:card"/>
<script>
dataLayer=[];var pbjs=pbjs||{};pbjs.que=pbjs.que||[]
</script>
<script>
!function(e,t,a,n,g){e[n]=e[n]||[],e[n].push({"gtm.start":(new Date).getTime(),event:"gtm.js"});var m=t.getElementsByTagName(a)[0],r=t.createElement(a);r.async=!0,r.src="//www.googletagmanager.com/gtm.js?id=GTM-M6N38SF",m.parentNode.insertBefore(r,m)}(window,document,"script","dataLayer")
</script>
<link href="https://s.imgur.com/desktop-assets/css/styles.ebc99cf807f6b7c8c39c.css" rel="stylesheet"/>
</meta>
</meta>
</meta>
</meta>
</head>
<body>
<noscript>
<iframe height="0" src="https://www.googletagmanager.com/ns.html?id=GTM-M6N38SF" style="display:none;visibility:hidden" width="0">
</iframe>
</noscript>
<noscript>
If you're seeing this message, that means
<strong>
JavaScript has been disabled on your browser
</strong>
, please
<strong>
enable JS
</strong>
to make Imgur work.
</noscript>
<div id="root">
</div>
<script async="" src="https://www.googletagmanager.com/gtag/js?id=UA-6671908-15">
</script>
<script>
function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag("js",new Date),gtag("config","UA-6671908-15",{send_page_view:!1})
</script>
<script class="abp" src="https://s.imgur.com/min/px.js?ch=1">
</script>
<script class="abp" src="https://s.imgur.com/min/px.js?ch=2">
</script>
<script src="https://s.imgur.com/desktop-assets/js/main.2e34f379cd8d1a3ca8b1.js">
</script>
</body>
</html>
你没有使用硒。您使用了请求和bs4。如果您使用了selenium，您就不会遇到这个问题，因为selenium为您执行javascript，而请求则不会。该网站似乎用javascript加载图像 可以找到硒的例子
您可以查看更多信息。在发出初始请求后，通过Javascript加载站点的实际内容。我猜您只会收到初始HTML，它不包含任何带有类图像占位符的元素。您必须使用某种无头浏览器。使用selenium中的driver.get（），然后使用driver.getPageSource（），它将显示元素。
import requests
from bs4 import BeautifulSoup
from pathlib import Path
import os
#UserInput for phrase to search.
phrase = input('Enter text to search: ')
finalphrase = phrase.replace(" ", "+")
print('Searching for ' + finalphrase + '.....')
#makes soup of the search page and collect all results as galleryElem
site = 'https://imgur.com'
res = requests.get(site + '/search?q=' + phrase)
soup = BeautifulSoup(res.text, 'html.parser')
galleryElem = soup.select('.image-list-link')
#For each thumbnail will open it and download its content
for n in range(len(galleryElem)):
imageLink = galleryElem[n].get('href')
res1 = requests.get(site+imageLink)
soup1 = BeautifulSoup(res1.text, 'html.parser')
imageElem = soup.select('.image-placeholder')
for m in range(len(imageElem)):
image = imageElem[m].get('src')
img = open(os.path.join(finalphrase, number, os.path.basename(image), 'wb'))
number += 1
for a in image.iter_content(100000):
img.write(a)
img.close()