WebDriver: How to specify preferred languages for Chrome

问题

I'm trying to get my remote chrome driver to request pages in German instead of English. Following the chromedriver documentation and list of chrome preferences, I tried to set it like this:

    capabilities.setCapability(ChromeOptions.CAPABILITY, getChromeOptions());
    Map<String, String> chromePrefs = new HashMap<String,String>();
    chromePrefs.put("settings.language.preferred_languages", "de-DE,de");
    capabilities.setCapability("chrome.prefs", chromePrefs);

And I can see it reaches chromedriver from the log file:

[0.453][FINE]:      Initializing session with capabilities {
   "browserName": "chrome",
   "chrome.prefs": {
      "settings.language.preferred_languages": "de-DE,de"
   },
   "chromeOptions": {
      "args": [ "--ignore-certificate-errors" ],
      "extensions": [  ]
   },
   "platform": "ANY",
   "version": null
}

But it still requests english pages and this can also be seen by opening the content settings in the preferences. What am I doing wrong?

回答1:

(Edit) Long story short:

intl.accept_languages is the preferences key to manipulate what languages are requested for a page.
Set the capability for the preferences using the (newer and preferred) ChromeOptions mechanism (otherwise it won't work if any ChromeOptions are set by you or your language bindings, see Issues 104 & 95).

ChromeOptions support for setting preferences is not completely implemented yet. So, unfortunately, you have to use the dirty workaround from my comment 6 to Issue 95

An alternative might be to create a user profile with the desired language settings and use ChromeOption to set the (command line) option to use this profile, as mentioned on the chromedriver capabilities wiki page.

回答2:

Pyhon examples

Note: I test it with "en,en_US" accepted language, but I don't see why it wouldn't work with de_DE as long as locale is available on the system.

This work with selenium

from selenium.webdriver import Chrome
from selenium.webdriver.chrome.options import Options
from splinter.driver.webdriver import BaseWebDriver, WebDriverElement

options = Options()
options.add_experimental_option('prefs', {'intl.accept_languages': 'de_DE'})

browser = BaseWebDriver()
browser.driver = Chrome(chrome_options=options)

browser.visit('http://example.com')

With splinter there is 2 options :

Splinter API only

from splinter import Browser
from splinter.driver.webdriver.chrome import Options

options = Options()
options.add_experimental_option('prefs', {'intl.accept_languages': 'de_DE'})

browser = Browser('chrome', options=options)

browser.visit('http://example.com')

Splinter and selenium API

from splinter import Browser
from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_experimental_option('prefs', {'intl.accept_languages': 'de_DE'})

browser = Browser('chrome', options=options)

browser.visit('http://example.com')

来源：https://stackoverflow.com/questions/11289597/webdriver-how-to-specify-preferred-languages-for-chrome

标签

google-chrome

webdriver

selenium-chromedriver