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SessionLocalerResolver语言已更改,但未看到

spring-boot spring

robert trudel · 技术社区 · 6 年前

我用弹簧靴2,弹簧安全。我为用户创建缓存。在我的用户类中,我有一个lang字段:fr,en… 允许用户选择所需的语言用户界面。

实际上,用户可以更改它的lang。

@EnableCaching
public class CacheConfig {

    @Bean
    public UserCache userCache() throws Exception {

        return new SpringCacheBasedUserCache(new ConcurrentMapCache("userCache"));

    }
}

public class I18nLocaleResolver extends SessionLocaleResolver {

    @Override
    public Locale resolveLocale(HttpServletRequest request) {

        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        if (auth != null && !"anonymousUser".equals(auth.getPrincipal())) {
            CustomUserDetails user = (CustomUserDetails) auth.getPrincipal();

            String lang = user.getLang();
            if (lang == null) {
                lang = LanguagesEnum.FR.getLanguage();
            }
            Locale locale = new Locale(lang);

            WebUtils.setSessionAttribute(request, LOCALE_SESSION_ATTRIBUTE_NAME, locale);

            return locale;
        }

        Locale locale = (Locale) WebUtils.getSessionAttribute(request, LOCALE_SESSION_ATTRIBUTE_NAME);
        if (locale == null) {
            locale = determineDefaultLocale(request);
        }
        WebUtils.setSessionAttribute(request, LOCALE_SESSION_ATTRIBUTE_NAME, locale);

        return locale;
    }

    @Override
    public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
        WebUtils.setSessionAttribute(request, LOCALE_SESSION_ATTRIBUTE_NAME, locale);

    }

}

在userdetailsserviceimpl中

@Transactional
    @Override
    public void updateLang(Integer userId, String newLanguage) {
        Optional<Users> optUserApp = repository.findById(userId);

        if (!optUserApp.isPresent()) {
            throw new UsernameNotFoundException("Username id " + userId + " not found");
        }

        Users user = optUserApp.get();

        user.setLang(newLanguage);

        repository.save(user);

        userCache.removeUserFromCache(user.getUsername());
    }

脚本

用户lang是en,所以它为fr更改它,我们通过updatelang方法传递,在db端更改它,调试器转到i18nlocalesolver之后。在这个地方,人们看到的是旧价值观。有没有办法在不注销用户的情况下刷新?