与上一个问题有关。我有一个 Spring Roo 应用程序，它使用 Hibernate 使用 JTS 将 Geometry 对象写入 PostGIS 数据库。我相信我已经解决了我在定义 Geometry 对象时遇到的问题，现在 Hibernate 正在执行它的 persist() 方法，但是在它到达数据库之前出现了问题，我得到了下面的异常。
这里有一些有趣的线条。首先来自 Hibernate 日志，要持久化的对象，然后是 SQL 查询（大概是 ? 被替换了）：
...
DEBUG org.hibernate.pretty.Printer - com.test.LandUse{id=1, centerPoint=POINT (5 6), version=0}
...
DEBUG org.hibernate.SQL - insert into land_use (center_point, version, id) values (?, ?, ?)
...
然后发生了更多的事情，虽然没有什么明显的坏事。但是我没有看到任何“最终”SQL，并且尝试回滚事务。然后：
org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:521)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$afterReturning$org_springframework_transaction_aspectj_AbstractTransactionAspect$3$2a73e96c(AbstractTransactionAspect.aj:78)
at com.test.LandUse_Roo_Jpa_ActiveRecord.ajc$interMethod$com_test_LandUse_Roo_Jpa_ActiveRecord$com_test_LandUse$persist(LandUse_Roo_Jpa_ActiveRecord.aj:44)
at com.test.LandUse.persist(LandUse.java:1)
at com.test.LandUse_Roo_Jpa_ActiveRecord.ajc$interMethodDispatch1$com_test_LandUse_Roo_Jpa_ActiveRecord$com_test_LandUse$persist(LandUse_Roo_Jpa_ActiveRecord.aj)
at com.test.LandUseController_Roo_Controller.ajc$interMethod$com_test_LandUseController_Roo_Controller$com_test_LandUseController$create(LandUseController_Roo_Controller.aj:29)
at com.test.LandUseController.create(LandUseController.java:1)
...
Caused by: javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:93)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:512)
... 54 more
Caused by: java.lang.UnsupportedOperationException
at org.hibernate.spatial.GeometrySqlTypeDescriptor.getBinder(GeometrySqlTypeDescriptor.java:52)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:283)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:278)
at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:89)
at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2184)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2430)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2874)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:79)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76)
... 55 more
我一直试图让这个简单的用例（一个只有一个 Geometry 属性的对象）工作了一个多星期，现在我已经束手无策了。如果我用 String 替换 Geometry 对象，它就可以正常工作。有谁知道什么可能导致这样的错误？
编辑：蒂埃里在下面的回答让我浏览了源代码，我注意到异常被抛出GeometrySqlTypeDescriptor，其中有一些有趣的内容：
/**
* A generic <code>SqlTypeDescriptor</code>, intended to be remapped
* by the spatial dialect.
*
* @author Karel Maesen, Geovise BVBA
* creation-date: 7/27/11
*/
public class GeometrySqlTypeDescriptor implements SqlTypeDescriptor {
public static final GeometrySqlTypeDescriptor INSTANCE = new GeometrySqlTypeDescriptor();
@Override
public int getSqlType() {
return 3000; //this value doesn't conflict with presently defined java.sql.Types values.
}
@Override
public boolean canBeRemapped() {
return true;
}
@Override
public <X> ValueBinder<X> getBinder(JavaTypeDescriptor<X> javaTypeDescriptor) {
throw new UnsupportedOperationException();
}
@Override
public <X> ValueExtractor<X> getExtractor(JavaTypeDescriptor<X> javaTypeDescriptor) {
throw new UnsupportedOperationException();
}
}
特别是，请注意类注释表明 Hibernate 方言映射明显有问题。不幸的是，我不知道这意味着什么，但我猜是由于某种版本不匹配。（还要注意 SQL 类型 3000 的声明，根据我之前的错误！）
org.hibernate.spatial.dialect.postgis.PostgisDialect根据Hibernate Spatial 使用指南，我目前的方言是。我正在使用 Hibernate Spatial 4.0-M1、JTS 1.12 和 PostGIS 2.0.1。我可能会尝试几个不同版本的 PostGIS，特别是因为这是 Hibernate Spatial 应该提供但似乎没有提供的一个依赖项。