使用 'requests-html' 时如何使用绝对链接路径获取原始 html

How to get raw html with absolute links paths when using 'requests-html'

使用 requests 库向 https://whosebug.com

发出请求时
page = requests.get(url='https://whosebug.com')
print(page.content)

我得到以下信息:

<!DOCTYPE html>
    <html class="html__responsive html__unpinned-leftnav">
    <head>
        <title>Stack Overflow - Where Developers Learn, Share, &amp; Build Careers</title>
        <link rel="shortcut icon" href="https://cdn.sstatic.net/Sites/Whosebug/Img/favicon.ico?v=ec617d715196">
        <link rel="apple-touch-icon" href="https://cdn.sstatic.net/Sites/Whosebug/Img/apple-touch-icon.png?v=c78bd457575a">
        <link rel="image_src" href="https://cdn.sstatic.net/Sites/Whosebug/Img/apple-touch-icon.png?v=c78bd457575a"> 
..........

这里的这些源代码有绝对路径,但是当运行相同URL使用requests-html和js渲染

with HTMLSession() as session:
    page = session.get('https://whosebug.com')
    page.html.render()
    print(page.content)

我得到以下信息:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Whosebug.org</title>
<script type="text/javascript" src="lib/jquery.js"></script>
<script type="text/javascript" src="lib/interface.js"></script>
<script type="text/javascript" src="lib/window.js"></script>
<link href="lib/dock.css" rel="stylesheet" type="text/css" />
<link href="lib/window.css" rel="stylesheet" type="text/css" />
<link rel="icon" type="image/gif" href="favicon.gif"/>
..........

这里的链接都是相对路径,

js渲染使用requests-html时如何获取requests等绝对路径的源码?

this link 中模块的文档提到了绝对链接和相对链接之间的区别。

引用:

Grab a list of all links on the page, in absolute form (anchors excluded):

r.html.absolute_links

你能试试这个语句吗?

这可能是 request-html developers 的功能请求。但是现在我们可以通过这个 hackish 解决方案来实现:

from requests_html import HTMLSession
from lxml import etree

with HTMLSession() as session:
    html = session.get('https://whosebug.com').html
    html.render()

    # iterate over all links
    for link in html.pq('a'):
        if "href" in link.attrib:
            # Make links absolute
            link.attrib["href"] = html._make_absolute(link.attrib["href"])

    # Print html with only absolute links
    print(etree.tostring(html.lxml).decode())

我们通过遍历所有链接并使用 html-对象的私有 _make_absolute 函数将它们的位置更改为绝对位置,从而更改底层 lxml 树的 html-对象。