This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Framework 6.1.13!spring-doc.cn

This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Framework 6.1.13!spring-doc.cn

By default, date and time fields not annotated with @DateTimeFormat are converted from strings by using the DateFormat.SHORT style. If you prefer, you can change this by defining your own global format.spring-doc.cn

To do that, ensure that Spring does not register default formatters. Instead, register formatters manually with the help of:spring-doc.cn

  • org.springframework.format.datetime.standard.DateTimeFormatterRegistrarspring-doc.cn

  • org.springframework.format.datetime.DateFormatterRegistrarspring-doc.cn

For example, the following Java configuration registers a global yyyyMMdd format:spring-doc.cn

@Configuration
public class AppConfig {

	@Bean
	public FormattingConversionService conversionService() {

		// Use the DefaultFormattingConversionService but do not register defaults
		DefaultFormattingConversionService conversionService =
			new DefaultFormattingConversionService(false);

		// Ensure @NumberFormat is still supported
		conversionService.addFormatterForFieldAnnotation(
			new NumberFormatAnnotationFormatterFactory());

		// Register JSR-310 date conversion with a specific global format
		DateTimeFormatterRegistrar dateTimeRegistrar = new DateTimeFormatterRegistrar();
		dateTimeRegistrar.setDateFormatter(DateTimeFormatter.ofPattern("yyyyMMdd"));
		dateTimeRegistrar.registerFormatters(conversionService);

		// Register date conversion with a specific global format
		DateFormatterRegistrar dateRegistrar = new DateFormatterRegistrar();
		dateRegistrar.setFormatter(new DateFormatter("yyyyMMdd"));
		dateRegistrar.registerFormatters(conversionService);

		return conversionService;
	}
}
@Configuration
class AppConfig {

	@Bean
	fun conversionService(): FormattingConversionService {
		// Use the DefaultFormattingConversionService but do not register defaults
		return DefaultFormattingConversionService(false).apply {

			// Ensure @NumberFormat is still supported
			addFormatterForFieldAnnotation(NumberFormatAnnotationFormatterFactory())

			// Register JSR-310 date conversion with a specific global format
			val dateTimeRegistrar = DateTimeFormatterRegistrar()
			dateTimeRegistrar.setDateFormatter(DateTimeFormatter.ofPattern("yyyyMMdd"))
			dateTimeRegistrar.registerFormatters(this)

			// Register date conversion with a specific global format
			val dateRegistrar = DateFormatterRegistrar()
			dateRegistrar.setFormatter(DateFormatter("yyyyMMdd"))
			dateRegistrar.registerFormatters(this)
		}
	}
}

If you prefer XML-based configuration, you can use a FormattingConversionServiceFactoryBean. The following example shows how to do so:spring-doc.cn

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans
		https://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
		<property name="registerDefaultFormatters" value="false" />
		<property name="formatters">
			<set>
				<bean class="org.springframework.format.number.NumberFormatAnnotationFormatterFactory" />
			</set>
		</property>
		<property name="formatterRegistrars">
			<set>
				<bean class="org.springframework.format.datetime.standard.DateTimeFormatterRegistrar">
					<property name="dateFormatter">
						<bean class="org.springframework.format.datetime.standard.DateTimeFormatterFactoryBean">
							<property name="pattern" value="yyyyMMdd"/>
						</bean>
					</property>
				</bean>
			</set>
		</property>
	</bean>
</beans>

Note there are extra considerations when configuring date and time formats in web applications. Please see WebMVC Conversion and Formatting or WebFlux Conversion and Formatting.spring-doc.cn