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这里的情况是：SqlExceptionHelper - 重复条目的唯一键使用Spring数据JPA
- 我有3个表 - 假人，A和B - 其中A和B具有一个一对多 关系，虚拟是独立的
- 这些表在数据层中具有相应的JPA实体。我是 使用存储库设计模式，因此通过其相应的 服务实现访问这些实体。
- 我拨打电话的确切顺序向这些实体：
- 获取一个实体ID = XXX
- 显示实体ID和姓名（或其他）
- 更新使用entity.setField场（YYY）
- 推回使用DB：entityService.updateEntity（实体）
上述顺序从＃4到＃7的作用类似于对虚拟表一个魅力。但无法执行的A和B的例外是：
ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Duplicate entry <The name here> for key 'name_UNIQUE'
Exception in thread "main" org.springframework.orm.jpa.JpaSystemException: org.hibernate.exception.ConstraintViolationException: could not execute statement; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:321)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:403)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
，我更新不是唯一的领域。这些实体具有完全相同的结构，并在这里和那里附加了一些列。
这里是一个虚拟实体代码：
DummyEntity dummyEntity = dummyService.findDummyEntity(16L);
System.out.println(">>> Name is: " + dummyEntity.getName() + " with ID: " + dummyEntity.getId());
dummyEntity.setName("New Name");
dummyEntity.setRank(3333333);
dummyService.updateDummyEntity(dummyEntity);
重复完全相同的步骤，剩下的实体A和B.
那我做错了吗？任何指针将不胜感激。
更新：
@erencan - 是的，我仔细检查了。这里是我在这里提出问题后观察到的。表A和B（麻烦的）有这样的问题：
- 当我问库的服务来回报我一个实例为表A和B的给定的ID，它返回他们正常的
- 时的变化是使用setXXX（）调用的，并且调用updateEntity（）或saveEntity（）（如使用上面的演示实体代码所示），save/update会在表中插入一个新的实体，其中的实体属性值与旧的一个，但随着新的变化（这通过去除表A和B上的唯一键约束来观察）。后来，当我在JPA/Java代码中使用它们的ID查询这些新创建的实体并执行完全相同的步骤（更改某个属性并调用存储库中的save/update）时，这些新创建的实体数据库表）按照预期的方式进行更新。
- 因此，似乎原来的实体（行）以某种方式'锁定'，并防止更新。因此，JPA保存/更新调用只是尝试创建一个新的调用;而且由于新的实体仍然具有相同的属性值集，任何UNIQUE键约束会开始抱怨（当然）
- 我没有对现有的表的一些测试（ETL'd进入DB），并发现这个行为是一致的：如果实体不是由JPA创建的，那么JPA可以读取数据，但不能更新它们;如果实体是由JPA创建的，那么JPA可以读取并更新它们。
不知道这是怎么回事（但）。下面是表A模式和B：
CREATE TABLE IF NOT EXISTS `mydbschema`.`table-B` (
`id` INT NOT NULL AUTO_INCREMENT COMMENT 'This is PK',
`name` VARCHAR(100) NULL,
`city` VARCHAR(50) NOT NULL,
`state` VARCHAR(30) NOT NULL,
`zip` VARCHAR(5) NOT NULL,
`country` VARCHAR(50) NOT NULL,
`overall_rank` INT NULL,
`inserted` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
`insert_src_ver_id` INT NULL,
`updated` TIMESTAMP NULL ON UPDATE CURRENT_TIMESTAMP,
`update_src_ver_id` INT NULL,
`version` INT NULL,
PRIMARY KEY (`id`),
UNIQUE INDEX `name_UNIQUE` (`name` ASC))
ENGINE = InnoDB;
还有一句：
CREATE TABLE IF NOT EXISTS `mydbschema`.`table-A` (
`id` INT NOT NULL AUTO_INCREMENT COMMENT 'This is PK',
`full_name` VARCHAR(200) NULL,
`gender` VARCHAR(1) NULL,
`year_of_birth` VARCHAR(4) NULL,
`title_code` VARCHAR(6) NULL,
`business_role` VARCHAR(30) NULL,
`graduation_year` VARCHAR(4) NULL,
`residency` VARCHAR(500) NULL,
`table-B_id` INT NULL,
`npi_num` VARCHAR(10) NULL,
`upin` VARCHAR(20) NULL,
`dea_num` VARCHAR(20) NULL,
`dea_expire_date` VARCHAR(10) NULL,
`year_started_practicing` VARCHAR(4) NULL,
`high_prescriber` VARCHAR(1) NULL,
`board_action` VARCHAR(1) NULL,
`mdi_qscore` INT NOT NULL DEFAULT 0,
`mdi_cscore` INT NOT NULL DEFAULT 0,
`aco_id` INT NULL,
`npp` INT NULL,
`medicaid_id` VARCHAR(50) NULL,
`medicaid_state` VARCHAR(2) NULL,
`medicare_id` VARCHAR(50) NULL,
`medicare_state` VARCHAR(2) NULL,
`medicare_provider_flag` VARCHAR(1) NULL,
`inserted` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
`insert_src_ver_id` INT NULL,
`updated` TIMESTAMP NULL ON UPDATE CURRENT_TIMESTAMP,
`update_src_ver_id` INT NULL,
`version` INT NULL,
PRIMARY KEY (`id`),
UNIQUE INDEX `hdsphy_id_UNIQUE` (`id` ASC),
UNIQUE INDEX `npi_num_UNIQUE` (`npi_num` ASC),
UNIQUE INDEX `dea_num_UNIQUE` (`dea_num` ASC),
CONSTRAINT `fk_table-A_table-B`
FOREIGN KEY (`table-B_id`)
REFERENCES `mydbschema`.`table-B` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
ENGINE = InnoDB;
以下是完整的堆栈跟踪：
2013-09-30 10:20:49,705 [main] ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Duplicate entry '1568673648' for key 'npi_num_UNIQUE'
Exception in thread "main" org.springframework.orm.jpa.JpaSystemException: org.hibernate.exception.ConstraintViolationException: could not execute statement; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:321)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:403)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:163)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.data.jpa.repository.support.LockModeRepositoryPostProcessor$LockModePopulatingMethodIntercceptor.invoke(LockModeRepositoryPostProcessor.java:84)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy60.save(Unknown Source)
at com.mdinsider.platform.domain.PhysicianServiceImpl_Roo_Service.ajc$interMethod$com_mdinsider_platform_domain_PhysicianServiceImpl_Roo_Service$com_mdinsider_platform_domain_PhysicianServiceImpl$updatePhysician(PhysicianServiceImpl_Roo_Service.aj:48)
at com.mdinsider.platform.domain.PhysicianServiceImpl.updatePhysician(PhysicianServiceImpl.java:1)
at com.mdinsider.platform.domain.PhysicianService_Roo_Service.ajc$interMethodDispatch1$com_mdinsider_platform_domain_PhysicianService_Roo_Service$com_mdinsider_platform_domain_PhysicianService$updatePhysician(PhysicianService_Roo_Service.aj)
at com.mdinsider.platform.mediblip.engine.TestDBSave.saveMDIQualityScore(TestDBSave.java:94)
at com.mdinsider.platform.mediblip.engine.TestDBSave.main(TestDBSave.java:142)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1310)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1316)
at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:898)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:241)
at com.sun.proxy.$Proxy31.merge(Unknown Source)
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:345)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:334)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:319)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
... 12 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:74)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:136)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2975)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3487)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:377)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:214)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:194)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:178)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:321)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:286)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
at org.hibernate.ejb.event.EJB3MergeEventListener.saveWithGeneratedId(EJB3MergeEventListener.java:71)
at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:236)
at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:216)
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:154)
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:76)
at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:914)
at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:898)
at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:902)
at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:889)
... 31 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '1568673648' for key 'npi_num_UNIQUE'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1039)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3609)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3541)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2002)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2163)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2624)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2127)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2427)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2345)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2330)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:133)
'name_UNIQUE'不是唯一的，但DB希望它是唯一的。你能发表表格定义和实体映射吗？ – erencan
而你是如何存储实体数据库（你的资料库，即调用哪个方法？）。请发布完整的堆栈跟踪，而不是一个片段。 –
@ M.Deinum - 数据使用ETL脚本加载。数据是使用Spring Data JPA在Java中间件中访问的。使用存储库服务访问实体;请在原始帖子中查看我的虚拟实体代码。保存/更新的资料库界面上保存，更新 - 至极内部确定的实体应保持或合并。 –
Kingz