保存带有UUID字段的实体时遇到问题。我创建了一个新示例，调用setMyGuid(UUID.fromString(guid));，然后调用CrudRepository的save方法。但它生成的SQL具有列值'<byte[]>'，而不是UUID/String。
将参数[8]绑定为[二进制] - [d 720 f7 e2 - 69 ec-4646-bd 99 - 72545123 f873]
我把hibernate.dialect设置为org.hibernate.dialect.PostgreSQLDialect，我也试着设置spring.jpa.database-platform，但是没有用。这里写的是，UUID应该Map到SQL uuid。
数据库为Postgres，列定义为：

@Column(name = "my_guid", nullable = false, unique = true, columnDefinition = "uuid")
private UUID myGuid;

库版本的堆栈跟踪如下：

Caused by: org.postgresql.util.PSQLException: ERROR: column "my_guid" is of type uuid but expression is of type bytea
  You will need to rewrite or cast the expression.
  Position: 238
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2676) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2366) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:356) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:496) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:413) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:190) ~[postgresql-42.5.1.jar:42.5.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:152) ~[postgresql-42.5.1.jar:42.5.1]
    at net.sf.log4jdbc.sql.jdbcapi.PreparedStatementSpy.executeUpdate(PreparedStatementSpy.java:1080) ~[log4jdbc-log4j2-jdbc4.1-1.16.jar:?]
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) ~[HikariCP-5.0.1.jar:?]
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) ~[HikariCP-5.0.1.jar:?]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:42) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3327) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3965) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:80) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:653) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:283) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:264) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:322) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:340) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:286) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:184) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:129) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:53) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:737) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:721) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[?:?]
    at java.lang.reflect.Method.invoke(Method.java:578) ~[?:?]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:307) ~[spring-orm-6.0.3.jar:6.0.3]
    at jdk.proxy2.$Proxy138.persist(Unknown Source) ~[?:?]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:610) ~[spring-data-jpa-3.0.0.jar:3.0.0]

谢谢你的帮助。