Chrome无头下载pdf

Question

我有一个脚本，该脚本从一个站点下载pdf文件，该站点每个月都在更新，我想使它自动化。它可以工作，但我无法让它发挥得淋漓尽致，我认为这是因为它无法正确处理下载。它似乎以无头的方式启动了chrome，并且我的导航命令似乎可以正常运行，但是当下载时什么也没发生。

#!/usr/bin/env ruby
#
require 'capybara'
require 'rb-inotify'
require 'webdrivers/chromedriver'

def initialise
  Capybara.register_driver :chrome do |app|
    Capybara::Selenium::Driver.new(app, :browser => :chrome, options: chrome_options)
  end
  @session = Capybara::Session.new(:chrome)
end

# Settings and profile for the Chrome Browser
# NOTE: still cannot get headless working
def chrome_options
  opts = Selenium::WebDriver::Chrome::Options.new
  opts.add_argument('--headless') unless ENV['UI']
  opts.add_argument('--no-sandbox')
  opts.add_argument('--disable-gpu')
  opts.add_argument('--disable-dev-shm-usage')
  opts.add_argument('--window-size=1920,1080')

  opts.add_preference(:download,
                      directory_upgrade: true,
                      prompt_for_download: false,
                      default_directory: "~/Downloads")

  opts.add_preference(:plugins,
                      plugins_disabled: ["Chrome PDF Viewer"])

  opts.add_preference(:browser, set_download_behavior: { behavior: 'allow' })
  opts
end

Answer 1

在不同版本的Chrome和selenium-webdriver中，更改/增长下载所需的设置。似乎您缺少其中之一。

opts.add_preference('download.default_directory', '~/Downloads')

根据版本，您还可以做的另一件事是

def initialise
  Capybara.register_driver :chrome do |app|
    Capybara::Selenium::Driver.new(app, :browser => :chrome, options: chrome_options).tap do |driver|
      driver.browser.download_path = '~/Downloads'
  end
  @session = Capybara::Session.new(:chrome)
end