是否可以在Symfony2（example.com/fr/page）中使用不同的语言，但默认为example.com/page为英语？

I'm trying to find a way to setup Symfony2 with language support but where it defaults to a default language if a language not entered.

So basically I want to allow these URLs for the 'page' page:

example.com/page
example.com/fr/page
example.com/de/page

etc...

I can easily do it if you always specify a language (e.g. example.com/en/page) but I don't want that. I want my links to be like this for English:

example.com
example.com/page
example.com/about

...and IF the user changes language to then append that to the URL:

example.com/fr
example.com/fr/page
example.com/fr/about

I currently use this but I have to specify a language on every request:

the_site:
    resource: "@MyBundle/Resources/config/routing.yml"
    prefix:   /{_locale}
    requirements:
     _locale: en|fr|es|de

I don't think this is possible??

You should use JMSI18nRoutingBundle. Scenario #2 (described in the docs) is what you want.