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AcceptHeaderLocaleResolver returns default locale in case of no supported locale found 

Issue: SPR-15426
(cherry picked from commit ea98ee8)
This commit is contained in:
Juergen Hoeller 2017-04-10 15:36:13 +02:00
parent 597fe0720f
commit a3d199f4dd
2 changed files with 28 additions and 13 deletions
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18
spring-webmvc/src/main/java/org/springframework/web/servlet/i18n/AcceptHeaderLocaleResolver.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2016 the original author or authors.
* Copyright 2002-2017 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.
@ -95,11 +95,15 @@ public class AcceptHeaderLocaleResolver implements LocaleResolver {
if (defaultLocale != null && request.getHeader("Accept-Language") == null) {
return defaultLocale;
}
Locale locale = request.getLocale();
if (!isSupportedLocale(locale)) {
locale = findSupportedLocale(request, locale);
Locale requestLocale = request.getLocale();
if (isSupportedLocale(requestLocale)) {
return requestLocale;
}
return locale;
Locale supportedLocale = findSupportedLocale(request);
if (supportedLocale != null) {
return supportedLocale;
}
return (defaultLocale != null ? defaultLocale : requestLocale);
}
private boolean isSupportedLocale(Locale locale) {
@ -107,7 +111,7 @@ public class AcceptHeaderLocaleResolver implements LocaleResolver {
return (supportedLocales.isEmpty() || supportedLocales.contains(locale));
}
private Locale findSupportedLocale(HttpServletRequest request, Locale fallback) {
private Locale findSupportedLocale(HttpServletRequest request) {
Enumeration<Locale> requestLocales = request.getLocales();
while (requestLocales.hasMoreElements()) {
Locale locale = requestLocales.nextElement();
@ -115,7 +119,7 @@ public class AcceptHeaderLocaleResolver implements LocaleResolver {
return locale;
}
}
return fallback;
return null;
}
@Override

23
spring-webmvc/src/test/java/org/springframework/web/servlet/i18n/AcceptHeaderLocaleResolverTests.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2016 the original author or authors.
* Copyright 2002-2017 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.
@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.i18n;
import java.util.Arrays;
@ -24,15 +25,14 @@ import org.junit.Test;
import org.springframework.mock.web.test.MockHttpServletRequest;
import static java.util.Locale.CANADA;
import static java.util.Locale.JAPANESE;
import static java.util.Locale.UK;
import static java.util.Locale.US;
import static org.junit.Assert.assertEquals;
import static java.util.Locale.*;
import static org.junit.Assert.*;
/**
* Unit tests for {@link AcceptHeaderLocaleResolver}.
*
* @author Rossen Stoyanchev
* @author Juergen Hoeller
*/
public class AcceptHeaderLocaleResolverTests {
@ -56,6 +56,17 @@ public class AcceptHeaderLocaleResolverTests {
this.resolver.setSupportedLocales(Collections.singletonList(CANADA));
assertEquals(US, this.resolver.resolveLocale(request(US, UK)));
}
@Test
public void resolvePreferredNotSupportedWithDefault() {
this.resolver.setSupportedLocales(Arrays.asList(US, JAPAN));
this.resolver.setDefaultLocale(Locale.JAPAN);
MockHttpServletRequest request = new MockHttpServletRequest();
request.addHeader("Accept-Language", KOREA.toString());
request.setPreferredLocales(Collections.singletonList(KOREA));
assertEquals(Locale.JAPAN, this.resolver.resolveLocale(request));
}
@Test
public void defaultLocale() throws Exception {