如何使用 mechanize gem 抓取图像的图标 link

Question

我有一个 url，我必须使用抓取所有图像 mechanize gem，但一些图像 url在 rel=icon.

我必须从中获取图像 url:

<link rel="icon" href="https://mywebsite.com/wp-content/uploads/2021/10/cropped-favicon-32x32.png" sizes="32x32">

这是我试过的代码，只抓取 图像。如何让两者合二为一。

require 'mechanize'
url = "https://mywebsite.com/"

agent = Mechanize.new
page = agent.get(url)

page.images.each do |image|
  puts image #getting here all images here from image tag
end

Answer 1

我查看了 Mechanize Page Link，但 returns 只有 anchors。

用 xpath

试过了

page.xpath('//link[contains(@rel, "icon")]').each do |icon|
  p icon.attr('href')
end

并收到：

"https://ownwebsite.com/wp-content/uploads/2021/10/cropped-favicon-32x32.png"
"https://ownwebsite.com/wp-content/uploads/2021/10/cropped-favicon-192x192.png" 
"https://ownwebsite.com/wp-content/uploads/2021/10/cropped-favicon-180x180.png"

这里是一张Replit，returns所有的图片。

Answer 2

page.search('link').each do |link|
      if link['href'].to_s.include?(".gif") or link['href'].to_s.include?(".png")  or link['href'].to_s.include?(".jpg")  or link['href'].to_s.include?(".jpeg")
      puts link['href']
      end
    end

如何使用 mechanize gem 抓取图像的图标 link

How to scrape icon link of image using mechanize gem

ruby

ruby-on-rails

mechanize

web-scraping

ruby-on-rails-5