Auto Download files in watir

问题

How to auto download the excel files from the browser in one click on the link, without going through the "save as" and other windows in watir. I am trying to keep it OS independent, so would not be interested in using win32ole gem.

回答1:

for this task I tweaking my profile preferences

my code looks like this:

chrome driver:

profile = Selenium::WebDriver::Chrome::Profile.new
profile['download.default_directory'] = download_directory
profile['download.prompt_for_download'] = false
browser = Watir::Browser.new :chrome, :profile => profile

chrome driver 2:

prefs = {
    'download' => {
        'default_directory' => download_directory,
        'prompt_for_download' => false,
        'directory_upgrade' => true, 
        'extensions_to_open' => '',
    },
    'profile' => {
        'default_content_settings' => {'multiple-automatic-downloads' => 1}, #for chrome version olde ~42
        'default_content_setting_values' => {'automatic_downloads' => 1}, #for chrome newer 46
        'password_manager_enabled' => false,
        'gaia_info_picture_url' => true,
    }
}

caps = Selenium::WebDriver::Remote::Capabilities.chrome
caps['chromeOptions'] = {'prefs' => prefs}
browser = Watir::Browser.new :chrome, :desired_capabilities => caps

firefox:

profile = Selenium::WebDriver::Firefox::Profile.new
profile['browser.download.lastDir'] = download_directory
profile['browser.download.folderList'] = 2
profile['browser.download.dir'] = download_directory
profile['browser.download.manager.showWhenStarting'] = false
profile['browser.helperApps.alwaysAsk.force'] = false
profile['browser.helperApps.neverAsk.openFile'] = "text/csv,application/pdf"
profile['browser.helperApps.neverAsk.saveToDisk'] = "text/csv,application/pdf"
profile['pdfjs.disabled'] = true
browser = Watir::Browser.new :firefox, :profile => profile

(firefox example for me working only for pdf files)

but selenium browsers download has many bugs

some problem in chrome or firefox webdriver (like this http://code.google.com/p/chromedriver/issues/detail?id=130) do not allow write good tests for file downloads

I wrote the following ruby script for download files

require ‘rubygems’
require “net/http”
require “uri”

def download(_url, _download_path = ”)
    url = URI.parse _url
    http_object = Net::HTTP.new(url.host, url.port)
    http_object.use_ssl = true if (url.scheme == ‘https’ || url.port == 443)

    http_object.start.request_get(url.path) do |response|
        start_time = Time.now
        response["Content-Disposition"] =~ /^.+?filename=”(.+?)”$/
        file_name = $1
        file = open(_download_path + file_name, ‘wb’)
        length = response['Content-Length'].to_i
        response.read_body do |fragment|
            file.write(fragment)
        end
        file.close
        file_size = File.size(_download_path + file_name)/1024.0/1024.0
        puts “-“*80
        puts “Download time – #{Time.now – start_time}”
        puts “Download speed – #{file_size/(Time.now – start_time)} MB/s”
        puts “-“*80
    end
end

download(‘http://storagemadeeasy.com/files/1cf064a30aba6d1b8fbc0fba8ac8be5b.jpg’)

I hope this code will be useful for those who need test file download (not browser file download dialog window)