LocaleResolver (Spring Framework 5.2.12.RELEASE API)

All Known Subinterfaces:
LocaleContextResolver
All Known Implementing Classes:
AbstractLocaleContextResolver, AbstractLocaleResolver, AcceptHeaderLocaleResolver, CookieLocaleResolver, FixedLocaleResolver, SessionLocaleResolver
```
public interface LocaleResolver
```
Interface for web-based locale resolution strategies that allows for both locale resolution via the request and locale modification via request and response.
This interface allows for implementations based on request, session, cookies, etc. The default implementation is AcceptHeaderLocaleResolver, simply using the request's locale provided by the respective HTTP header.
Use RequestContext.getLocale() to retrieve the current locale in controllers or views, independent of the actual resolution strategy.
Note: As of Spring 4.0, there is an extended strategy interface called LocaleContextResolver, allowing for resolution of a LocaleContext object, potentially including associated time zone information. Spring's provided resolver implementations implement the extended LocaleContextResolver interface wherever appropriate.
Since:
27.02.2003
Author:
Juergen Hoeller
See Also:
LocaleContextResolver, LocaleContextHolder, RequestContext.getLocale(), RequestContextUtils.getLocale(javax.servlet.http.HttpServletRequest)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Locale`	`resolveLocale(HttpServletRequest request)`	Resolve the current locale via the given request.
`void`	`setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale)`	Set the current locale to the given one.

- Method Detail
  - resolveLocale
```
Locale resolveLocale(HttpServletRequest request)
```
    Resolve the current locale via the given request. Can return a default locale as fallback in any case.
    Parameters:
    request - the request to resolve the locale for
    Returns:
    the current locale (never null)
  - setLocale
```
void setLocale(HttpServletRequest request,
               @Nullable
               HttpServletResponse response,
               @Nullable
               Locale locale)
```
    Set the current locale to the given one.
    Parameters:
    request - the request to be used for locale modification
    response - the response to be used for locale modification
    locale - the new locale, or null to clear the locale
    Throws:
    UnsupportedOperationException - if the LocaleResolver implementation does not support dynamic changing of the locale