org.springframework.web.server.i18n

Class AcceptHeaderLocaleContextResolver

java.lang.Object

org.springframework.web.server.i18n.AcceptHeaderLocaleContextResolver

All Implemented Interfaces:

LocaleContextResolver

public class AcceptHeaderLocaleContextResolver
extends Object
implements LocaleContextResolver

LocaleContextResolver implementation that simply uses the primary locale specified in the "Accept-Language" header of the HTTP request (that is, the locale sent by the client browser, normally that of the client's OS).

Note: Does not support setLocaleContext(org.springframework.web.server.ServerWebExchange, org.springframework.context.i18n.LocaleContext), since the accept header can only be changed through changing the client's locale settings.

Since:

5.0

Author:

Sebastien Deleuze, Juergen Hoeller

See Also:

HttpHeaders.getAcceptLanguageAsLocales()

Constructor Summary

Constructors

Constructor and Description
AcceptHeaderLocaleContextResolver()

Method Summary

Modifier and Type	Method and Description
Locale	getDefaultLocale() The configured default locale, if any.
List<Locale>	getSupportedLocales() Return the configured list of supported locales.
LocaleContext	resolveLocaleContext(ServerWebExchange exchange) Resolve the current locale context via the given exchange.
void	setDefaultLocale(Locale defaultLocale) Configure a fixed default locale to fall back on if the request does not have an "Accept-Language" header (not set by default).
void	setLocaleContext(ServerWebExchange exchange, LocaleContext locale) Set the current locale context to the given one, potentially including a locale with associated time zone information.
void	setSupportedLocales(List<Locale> locales) Configure supported locales to check against the requested locales determined via HttpHeaders.getAcceptLanguageAsLocales().

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AcceptHeaderLocaleContextResolver

public AcceptHeaderLocaleContextResolver()

Method Detail

setSupportedLocales

public void setSupportedLocales(List<Locale> locales)

Configure supported locales to check against the requested locales determined via HttpHeaders.getAcceptLanguageAsLocales().

Parameters:

locales - the supported locales

getSupportedLocales

public List<Locale> getSupportedLocales()

Return the configured list of supported locales.

setDefaultLocale

public void setDefaultLocale(@Nullable
                             Locale defaultLocale)

Configure a fixed default locale to fall back on if the request does not have an "Accept-Language" header (not set by default).

Parameters:

defaultLocale - the default locale to use

getDefaultLocale

@Nullable
public Locale getDefaultLocale()

The configured default locale, if any.

This method may be overridden in subclasses.

resolveLocaleContext

public LocaleContext resolveLocaleContext(ServerWebExchange exchange)

Description copied from interface: LocaleContextResolver

Resolve the current locale context via the given exchange.

The returned context may be a TimeZoneAwareLocaleContext, containing a locale with associated time zone information. Simply apply an instanceof check and downcast accordingly.

Custom resolver implementations may also return extra settings in the returned context, which again can be accessed through downcasting.

Specified by:

resolveLocaleContext in interface LocaleContextResolver

Parameters:

exchange - current server exchange

Returns:

the current locale context (never null)

setLocaleContext

public void setLocaleContext(ServerWebExchange exchange,
                             @Nullable
                             LocaleContext locale)

Description copied from interface: LocaleContextResolver

Set the current locale context to the given one, potentially including a locale with associated time zone information.

Specified by:

setLocaleContext in interface LocaleContextResolver

Parameters:

exchange - current server exchange

locale - the new locale context, or null to clear the locale

See Also:

SimpleLocaleContext, SimpleTimeZoneAwareLocaleContext