springboot国际化多语言配置方式

@Configuration
public class LocalConfig {

    /**
     * 默认解析器 其中locale表示默认语言
     */
    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver localeResolver = new SessionLocaleResolver();
        localeResolver.setDefaultLocale(Locale.CHINA);
        return localeResolver;
    }

    /**
     * 默认拦截器 其中lang表示切换语言的参数名
     */
    @Bean
    public WebMvcConfigurer localeInterceptor() {
        return new WebMvcConfigurer() {
            @Override
            public void addInterceptors(InterceptorRegistry registry) {
                LocaleChangeInterceptor localeInterceptor = new LocaleChangeInterceptor();
                localeInterceptor.setParamName("lang");  //拦截lang参数
                registry.addInterceptor(localeInterceptor);
            }
        };
    }

}

@Component
public class LocalUtil {

    private static MessageSource messageSource;

    public LocalUtil(MessageSource messageSource) {
        LocalUtil.messageSource = messageSource;
    }

    /**
     * 获取单个国际化翻译值
     */
    public static String get(String msgKey) {
        try {
            return messageSource.getMessage(msgKey, null, LocaleContextHolder.getLocale());
        } catch (Exception e) {
            return msgKey;
        }
    }
}

@RestController
@RequestMapping("lang")
public class LangController {

    @RequestMapping("get")
    public String get(){
        return LocalUtil.get("demo");
    }
}