[英]Spring mvc get default locale from request if locale is invalid
我在我的Spring MVC應用程序(localeInterceptor等)中配置了i18n。
支持兩種語言(en&pl)。 PL是默認值。 I18n當然是有效的。
我的情況是獲取當前的語言環境並將其傳遞給模型。 這很容易,但是當我傳遞無效的語言環境參數(比如localhost:8080 /?language = asd )時,我得到的是“asd”而不是默認的“pl”。
值得一提的是,整個i18n工作得很好,我的意思是在這種情況下使用messages_pl.properties。 我嘗試了以下方法但沒有成功:
@RequestMapping(...)
public String home(Locale locale,..)
localeResolver.resolveLocale(request);
RequestContextUtils.getLocale(request);
LocaleContextHolder.getLocale();
每一個都給我一個“asd”而不是“pl”。
Atm我有一個凌亂的解決方法:
if (!supportedLocaleService.isLocaleSupported(locale)) {//myservice
locale = new Locale("pl");
}
您可以覆蓋LocaleChangeInterceptor
public class SupportedLocaleAwareLocaleChangeInterceptor extends LocaleChangeInterceptor {
private List<String>supportedLocales = Arrays.asList("pl",....);
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws ServletException {
String newLocale = request.getParameter(this.paramName);
//if (newLocale != null) {
if (newLocale != null && supportedLocales.contains(newLocale )) {
LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);
if (localeResolver == null) {
throw new IllegalStateException("No LocaleResolver found: not in a DispatcherServlet request?");
}
localeResolver.setLocale(request, response, StringUtils.parseLocaleString(newLocale));
}
// Proceed in any case.
return true;
}
}
還有一個方法。
public class CustomCookieLocaleResolver extends CookieLocaleResolver {
private final List<String> permittedLanguages = Arrays.asList("sk", "en");
@Override
public Locale resolveLocale(HttpServletRequest request) {
Locale locale = (Locale) request.getAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME);
if (locale != null && !permittedLanguages.contains(locale.getLanguage())) {
locale = determineDefaultLocale(request);
}
return locale;
}
@Override
public LocaleContext resolveLocaleContext(HttpServletRequest request) {
try {
LocaleContext context = super.resolveLocaleContext(request);
return context;
} catch (Exception e) {
}
final Locale defaultLocale = determineDefaultLocale(request);
TimeZone defaultTimeZone2 = determineDefaultTimeZone(request);
return new TimeZoneAwareLocaleContext() {
@Override
@Nullable
public Locale getLocale() {
return defaultLocale;
}
@Override
@Nullable
public TimeZone getTimeZone() {
return defaultTimeZone2;
}
};
}
@Override
public void addCookie(HttpServletResponse response, String cookieValue) {
if (permittedLanguages.contains(cookieValue)) {
super.addCookie(response, cookieValue);
}
}
}
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