写入数据库时发生java异常（org.hibernate.Exception.ConstraintViolationException）

1 年，3 月 Questions & Answers 11808

我有一个文件（这个文件实际上有制表符分隔的值），它必须被写入一个数据库表中。该文件也可以包含重复的条目。我处理文件中的5000条记录，所以我首先解析文件中的前5000条记录，如果它们包含任何重复条目，我只需忽略重复项，将其中唯一的记录写入数据库，然后以类似的方式再次处理接下来的5000条记录，直到达到EOF。现在，在编写这5000条记录时，5000条记录的集合之间可能存在重复，如果发生这种情况（然后数据库抛出DomainObjectExistsException），那么我捕获异常并简单地更新记录。我正在执行如下更新操作：

getHibernateTemplate().saveOrUpdate(femtoFactoryData);

其中femtoFactoryData是一个java对象（POJO），必须将其写入由文件中的制表符分隔值构建的数据库表中。表的主键只不过是Femto的ID和状态（临时/永久）

但在执行此更新操作时，我得到：

org.hibernate.exception.ConstraintViolationException

以下是我的程序中的stacktrace：

org.hibernate.exception.ConstraintViolationException: could not insert: [com.airvana.anp.model.db.domainobjects.FemtoFactoryData]
        at com.airvana.anp.model.db.impl.DbManagerGlobalUtils.convertException(DbManagerGlobalUtils.java:68)
        at com.airvana.anp.model.db.impl.FemtoFactoryDataDAOImplHelper.updateFemtoFactoryData(FemtoFactoryDataDAOImplHelper.java:302)
        at com.airvana.anp.model.db.impl.FemtoFactoryDataDAOImpl.updateFemtoFactoryData(FemtoFactoryDataDAOImpl.java:149)
        at com.airvana.anp.model.oss.imports.common.DataRecordDAOHelperImpl.updateRecord(DataRecordDAOHelperImpl.java:725)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
        at $Proxy89.updateRecord(Unknown Source)
        at com.airvana.anp.model.oss.imports.parser.ParseControllerImpl.saveDupFactoryRecordsInDb(ParseControllerImpl.java:477)
        at com.airvana.anp.model.oss.imports.parser.ParseControllerImpl.parseFile(ParseControllerImpl.java:111)
        at com.airvana.anp.model.oss.imports.FactoryOperationsManagerImpl.onAllocation(FactoryOperationsManagerImpl.java:192)
        at com.airvana.anp.model.resource.impl.CallbackWorkerJob.run(CallbackWorkerJob.java:43)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)
Caused by: org.springframework.dao.DataIntegrityViolationException: could not insert: [com.airvana.anp.model.db.domainobjects.FemtoFactoryData]; nested exception is org.hibernate.exception.ConstraintViolationException: could not insert: [com.airvana.anp.model.db.domainobjects.FemtoFactoryData]
        at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:624)
        at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
        at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
        at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
        at org.springframework.orm.hibernate3.HibernateTemplate.merge(HibernateTemplate.java:820)
        at com.airvana.anp.model.db.impl.FemtoFactoryDataDAOImplHelper.updateFemtoFactoryData(FemtoFactoryDataDAOImplHelper.java:299)
        ... 16 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not insert: [com.airvana.anp.model.db.domainobjects.FemtoFactoryData]
        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71)
        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
        at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2272)
        at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2665)
        at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:56)
        at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167)
        at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1004)
        at org.springframework.orm.hibernate3.HibernateAccessor.flushIfNecessary(HibernateAccessor.java:390)
        at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:420)
        ... 19 more
Caused by: java.sql.SQLException: ORA-00001: unique constraint (ANPDB.SYS_C008651) violated

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
        at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
        at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
        at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
        at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
        at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:955)
        at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1168)
        at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3316)
        at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3400)
        at weblogic.jdbc.wrapper.PreparedStatement.executeUpdate(PreparedStatement.java:128)
        at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23)
        at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2252)
        ... 29 more

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写入数据库时发生java异常（org.hibernate.Exception.ConstraintViolationException）

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