org.summerb.webappboilerplate.utils.ForceLocaleToCoockieUserAwareInterceptor Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright 2015-2024 Sergey Karpushin
*
* 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
*
* http://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.summerb.webappboilerplate.utils;
import java.util.Locale;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.AsyncHandlerInterceptor;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.support.RequestContextUtils;
import org.summerb.webappboilerplate.users.i18n.LocaleResolverUserBasedImpl;
/**
* Will force to save locale in cookie. We need this in order to fix bug with IE. Because it will
* incorrectly process locale for ajax requests. Instead of "ru_RU" as for regular GET it will send
* "ru" for XHR. This will lead to incorrect locale and currency processing.
*
* This impl can read user settings and default locale to the one chosen by user
*
* @author sergey.k
*/
public class ForceLocaleToCoockieUserAwareInterceptor implements AsyncHandlerInterceptor {
@Override
public boolean preHandle(
HttpServletRequest request, HttpServletResponse response, Object handler) {
LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);
// Check if it's our case
if (localeResolver == null) {
throw new IllegalStateException(
"No LocaleResolver found: not in a DispatcherServlet request?");
}
if (!(localeResolver instanceof LocaleResolverUserBasedImpl)) {
return true;
}
// Check if locale not in cookie.
// If so, then force it to store in cookie
LocaleResolverUserBasedImpl cookieLocaleResolver = (LocaleResolverUserBasedImpl) localeResolver;
Locale localeFromCookie = cookieLocaleResolver.resolveLocaleFromCookie(request);
Locale localeFromUser = cookieLocaleResolver.resolveLocale(request);
if (localeFromUser != null && !localeFromUser.equals(localeFromCookie)) {
cookieLocaleResolver.setLocale(request, response, localeFromUser);
}
return true;
}
}