spring FixedLocaleContextResolver 源码
spring FixedLocaleContextResolver 代码
文件路径：/spring-web/src/main/java/org/springframework/web/server/i18n/FixedLocaleContextResolver.java
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.server.i18n;
import java.util.Locale;
import java.util.TimeZone;
import org.springframework.context.i18n.LocaleContext;
import org.springframework.context.i18n.TimeZoneAwareLocaleContext;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.web.server.ServerWebExchange;
/**
* {@link LocaleContextResolver} implementation that always returns a fixed locale
* and optionally time zone. Default is the current JVM's default locale.
*
* <p>Note: Does not support {@link #setLocaleContext}, as the fixed locale and
* time zone cannot be changed.
*
* @author Sebastien Deleuze
* @since 5.0
*/
public class FixedLocaleContextResolver implements LocaleContextResolver {
private final Locale locale;
@Nullable
private final TimeZone timeZone;
/**
* Create a default FixedLocaleResolver, exposing a configured default
* locale (or the JVM's default locale as fallback).
*/
public FixedLocaleContextResolver() {
this(Locale.getDefault());
}
/**
* Create a FixedLocaleResolver that exposes the given locale.
* @param locale the locale to expose
*/
public FixedLocaleContextResolver(Locale locale) {
this(locale, null);
}
/**
* Create a FixedLocaleResolver that exposes the given locale and time zone.
* @param locale the locale to expose
* @param timeZone the time zone to expose
*/
public FixedLocaleContextResolver(Locale locale, @Nullable TimeZone timeZone) {
Assert.notNull(locale, "Locale must not be null");
this.locale = locale;
this.timeZone = timeZone;
}
@Override
public LocaleContext resolveLocaleContext(ServerWebExchange exchange) {
return new TimeZoneAwareLocaleContext() {
@Override
public Locale getLocale() {
return locale;
}
@Override
@Nullable
public TimeZone getTimeZone() {
return timeZone;
}
};
}
@Override
public void setLocaleContext(ServerWebExchange exchange, @Nullable LocaleContext localeContext) {
throw new UnsupportedOperationException(
"Cannot change fixed locale - use a different locale context resolution strategy");
}
}
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