I18n in Spring boot + Thymeleaf
Your application should extends WebMvcConfigurerAdapter
@SpringBootApplicationpublic class NerveNetApplication extends WebMvcConfigurerAdapter { public static void main(String[] args) { SpringApplication.run(NerveNetApplication.class, args); } @Bean public LocaleResolver localeResolver() { return new CookieLocaleResolver(); } @Bean public LocaleChangeInterceptor localeChangeInterceptor() { LocaleChangeInterceptor lci = new LocaleChangeInterceptor(); lci.setParamName("lang"); return lci; } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(localeChangeInterceptor()); }}Then on browser you can switch language with param langExample: http://localhost:1111/?lang=kh which messages_kh.properites will store the content of Khmer language.