(Quick Reference) # 16.2 Changing Locales Version: 6.0.0 ## 16.2 Changing Locales By default, the user locale is detected from the incoming `Accept-Language` header. You can provide users the capability to switch locales by simply passing a parameter called `lang` to Grails as a request parameter:
    /book/list?lang=es
Grails will automatically switch the user’s locale and subsequent requests will use the switched locale. By default, Grails uses SessionLocaleResolver as the `localeResolver` bean. You can change the default locale easily: grails-app/conf/spring/resources.groovy
    import org.springframework.web.servlet.i18n.SessionLocaleResolver

    beans = {
        localeResolver(SessionLocaleResolver) {
            defaultLocale= new Locale('es')
        }
    }
Other `localeResolver` are available. For example, you could use save the switched locale in a Cookie: grails-app/conf/spring/resources.groovy
    import org.springframework.web.servlet.i18n.CookieLocaleResolver

    beans = {
        localeResolver(CookieLocaleResolver) {
            defaultLocale= new Locale('es')
        }
    }
Or fix the locale: grails-app/conf/spring/resources.groovy
    import org.springframework.web.servlet.i18n.FixedLocaleResolver

    beans = {
        localeResolver(FixedLocaleResolver, new Locale('de'))
    }
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