@Bean
  public ConversionService conversionService() {
    FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();

    DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();
    registrar.setUseIsoFormat(true);
    factory.setFormatterRegistrars(Collections.singleton(registrar));

    factory.afterPropertiesSet();
    return factory.getObject();
  }
 public void afterPropertiesSet() {
   super.afterPropertiesSet();
   installLabelConverters(getObject());
 }