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Spring boot configuration file (annotation-based) - configures localization
package mongodbdemo.config;
import java.util.Locale;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ReloadableResourceBundleMessageSource;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.i18n.CookieLocaleResolver;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
/* Configuration for localization of Spring boot app
*
* Place your resource files in src/main/resources/lang/
* and name them
* messages.properties (default fallback)
* messages_de.properties
* messages_en.properties
*
* messages.properties example content:
* welcome=Welcome
*
* In Thymeleaf templates you can use this text as following:
* <h1 th:text="#{welcome}">Welcome</h1>
*
* Switching between locales like this in Thymeleaf template:
* <p>Language : <a href="?language=en">English</a>|<a href="?language=de">German</a></p>
*
*/
@Configuration
@EnableWebMvc
@ComponentScan
public class MvcWebConfig extends WebMvcConfigurerAdapter {
static final Logger logger = LoggerFactory.getLogger(MvcWebConfig.class);
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(localeChangeInterceptor());
}
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
localeChangeInterceptor.setParamName("language");
return localeChangeInterceptor;
}
@Bean(name = "localeResolver")
public CookieLocaleResolver localeResolver() {
CookieLocaleResolver localeResolver = new CookieLocaleResolver();
Locale defaultLocale = new Locale("en");
localeResolver.setDefaultLocale(defaultLocale);
return localeResolver;
}
@Bean
public ReloadableResourceBundleMessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("classpath:lang/messages");
messageSource.setCacheSeconds(10); //reload messages every 10 seconds
return messageSource;
}
// as alternative with-out automatic reloading, you could use the following:
// @Bean
// public ResourceBundleMessageSource messageSource() {
// ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
// messageSource.setBasename("lang/messages");
// return messageSource;
// }
}
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