LocaleContextHolder does not return exact locale in Spring Cloud Gateway

Question

Is there anyway to get current locale in Spring Cloud Gateway? I use LocaleContextHolder.getLocale() to get user's locale but it's always return default locale en. Thank for your help!

@Component
public class ClientVersionGatewayFilterFactory extends AbstractGatewayFilterFactory<ClientVersionGatewayFilterFactory.Config> {
    private final MessageSource messageSource;

    public ClientVersionGatewayFilterFactory(MessageSource messageSource) {
        super(Config.class);
        this.messageSource = messageSource;
    }

    @Override
    public GatewayFilter apply(Config config) {
        return new GatewayFilter() {
            @Override
            public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {

                Locale locale = LocaleContextHolder.getLocale();
                String message = messageSource.getMessage("test", null, locale);

                exchange.getResponse().getHeaders().set("X-Custom-Locale", locale.getLanguage());
                exchange.getResponse().getHeaders().set("X-Custom-Test", message);

                return exchange.getResponse().setComplete();
            }
        };
    }

    public static class Config {
    }
}

Answer 1

I found a way to workaround.

Locale locale = LocaleContextHolder.getLocale(exchange.getLocaleContext());
String message = messageSource.getMessage("test", null, locale);

Is there anyone have better solutions?