我们项目需要支持国际化，那么日期时间就需要有时区了，否则我们在今天早上9点干的事，人家美国人看到的是明天的时间。所以我们在Auditable中的创建时间和更新时间我们都定义为ZonedDateTime.
然而在保存的时候却抛出如下错误：

Caused by: java.lang.IllegalArgumentException: Cannot convert unsupported date type java.time.LocalDateTime to java.time.ZonedDateTime; Supported types are [java.time.LocalDateTime, java.time.LocalDate, java.time.LocalTime, java.time.Instant, java.util.Date, java.lang.Long, long]at org.springframework.data.auditing.DefaultAuditableBeanWrapperFactory.rejectUnsupportedType(DefaultAuditableBeanWrapperFactory.java:235)at org.springframework.data.auditing.DefaultAuditableBeanWrapperFactory$DateConvertingAuditableBeanWrapper.getDateValueToSet(DefaultAuditableBeanWrapperFactory.java:201)at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingMetadataAuditableBeanWrapper.lambda$setDateProperty$1(MappingAuditableBeanWrapperFactory.java:244)at java.base/java.lang.Iterable.forEach(Iterable.java:75)at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingMetadataAuditableBeanWrapper.setDateProperty(MappingAuditableBeanWrapperFactory.java:240)at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingMetadataAuditableBeanWrapper.setLastModifiedDate(MappingAuditableBeanWrapperFactory.java:221)at java.base/java.util.Optional.ifPresent(Optional.java:178)at org.springframework.data.auditing.AuditingHandlerSupport.touchDate(AuditingHandlerSupport.java:193)at org.springframework.data.auditing.AuditingHandlerSupport.lambda$touch$0(AuditingHandlerSupport.java:137)at java.base/java.util.Optional.map(Optional.java:260)at org.springframework.data.auditing.AuditingHandlerSupport.touch(AuditingHandlerSupport.java:134)at org.springframework.data.auditing.AuditingHandlerSupport.markModified(AuditingHandlerSupport.java:127)at org.springframework.data.auditing.AuditingHandler.markModified(AuditingHandler.java:98)at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForUpdate(AuditingEntityListener.java:112)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.base/java.lang.reflect.Method.invoke(Method.java:568)at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:55)at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:123)at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:86)at org.hibernate.event.internal.DefaultFlushEntityEventListener.invokeInterceptor(DefaultFlushEntityEventListener.java:346)at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:327)at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:244)at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:147)at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:226)at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:90)at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127)at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1403)at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:484)at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2319)at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:1976)

看来Springboot-jpa是不支持ZonedDateTime，网上搜了一下没找到有用的东西，于是自己解决吧。跟踪调试发现，AuditorAware 里面的当前时间是由一个DateTimeProvider生成的，而这个缺省的DateTimeProvider就是调用LocalDateTime.now()来生成的，那么我就自己创建一个DateTimeProvider，调用ZonedDateTime.now()试试，代码如下：

@Configuration
@EnableJpaAuditing(auditorAwareRef = "IrmpAuditorAware", dateTimeProviderRef = "zonedDateTimeProvider")
public class AuditorAwareConfig {@Bean("IrmpAuditorAware")AuditorAware<String> create() {return () -> Optional.of(AuthUtils.getLoginUsername());}@Component("zonedDateTimeProvider")public class CustomDateTimeProvider implements DateTimeProvider {@Overridepublic Optional<TemporalAccessor> getNow() {return Optional.of(ZonedDateTime.now());}}
}

再测试一下，果然正常了。