[jira] [Updated] (WW-5549) i18n interceptor param supportedLocale (when set) disables request_locale param functionality

["Lukasz Lenart (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-5549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart updated WW-5549:
------------------------------
    Fix Version/s: 7.2.0
                   6.9.0
                       (was: 7.1.0)
                       (was: 6.8.0)

> i18n interceptor param supportedLocale (when set) disables request_locale param functionality
> ---------------------------------------------------------------------------------------------
>
>                 Key: WW-5549
>                 URL: https://issues.apache.org/jira/browse/WW-5549
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Interceptors
>    Affects Versions: 6.3.0
>            Reporter: Rafa
>            Priority: Minor
>             Fix For: 7.2.0, 6.9.0
>
>
> It seems that when {{supportedLocale}} parameter is set on {{i18n}} interceptor - language change using {{request_locale}} param is not possible anymore if current browser {{Accept-Language}} matches the {{supportedLocale}} value.
> I set {{supportedLocale}} parameter on the {{i18n}} interceptor (e.g. to {{fr,en}} value). Now i enter the webapp (using a browser with fr language set as default) and the struts locale is set to {{fr}} (as expected - ok).
> Now i try switching the locale to {{en}} using the {{?request_locale=en}} built-in feature - but this does not work ({{{}fr{}}} is still set as language).
> If i do not set the {{supportedLocale}} param on the {{i18n}} interceptor - everything works fine (for exactly the same webapp, and the {{request_locale}} request param switch is working fine) but then i loose the feature of {_}struts preselecting fr language as default for browsers with fr language set as default{_}.
> When i look into the source code of [I18nInterceptor.java|https://github.com/apache/struts/blob/main/core/src/main/java/org/apache/struts2/interceptor/I18nInterceptor.java#L302] (line 302) it looks like {{AcceptLanguageLocaleHandler.find()}} (the {{super.find()}} from this line) is always returning one of the {{supportedLocale}} locales if browser has matching {{Accept-Language}} header (and {{supportedLocale}} value is set) - but it shall not e.g. when {{request_locale}} param is set (it shall take precedence here).



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