Hibernate、PostgreSQL：无法提取结果集，SQLState 25P02

Question

我正在我们的一个测试服务器上工作，当我试图调用一个方法时，我从休眠中得到一个错误，我在其中通过用户名获取 Person 对象。我做错了什么？

错误日志：

WARN : org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 0, SQLState: 25P02
ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - ERROR: current transaction is aborted, commands ignored until end of transaction block
WARN : org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 0, SQLState: 25P02
ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - ERROR: current transaction is aborted, commands ignored until end of transaction block
org.hibernate.exception.GenericJDBCException: could not extract ResultSet
        at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
        at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
        at org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
        at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
        at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
        at org.hibernate.loader.Loader.doQuery(Loader.java:910)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
        at org.hibernate.loader.Loader.doList(Loader.java:2554)
        at org.hibernate.loader.Loader.doList(Loader.java:2540)
        at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
        at org.hibernate.loader.Loader.list(Loader.java:2365)
        at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:497)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
        at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:236)
        at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1300)
        at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
        at org.hibernate.internal.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:966)
        at com.myproject.spring.dao.PersonDAOImpl.findPersonByUsername(PersonDAOImpl.java:118)
Caused by: org.postgresql.util.PSQLException: ERROR: current transaction is aborted, commands ignored until end of transaction block
        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2198)
        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1927)
        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:561)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:419)
        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:304)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
        at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)

PersonDAOImpl :

 @Override
    @Transactional
    public Person findPersonByUsername(String username) {
        Session session = this.sessionFactory.getCurrentSession();
        Query query = session.createQuery("from Person as p where p.username=:username");
        query.setParameter("username", username);
        try {
            return (Person) query.uniqueResult();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

数据库在那里，我做错了什么？谢谢你。

更新这个错误总是跟在上面那个错误之后:

WARN : org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 0, SQLState: 25006
ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - ERROR: cannot execute nextval() in a read-only transaction
org.hibernate.exception.GenericJDBCException: could not extract ResultSet
        at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
        at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
        at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
        at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
        at org.hibernate.id.SequenceHiLoGenerator.getNextValue(SequenceHiLoGenerator.java:81)
        at org.hibernate.id.enhanced.LegacyHiLoAlgorithmOptimizer.generate(LegacyHiLoAlgorithmOptimizer.java:77)
        at org.hibernate.id.SequenceHiLoGenerator.generate(SequenceHiLoGenerator.java:78)
        at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:118)
        at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
        at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
        at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
        at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
        at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
        at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
        at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
        at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)

Answer 1

您的实际问题很简单：您在只读事务中调用了 save() 操作。

但是，因为您吞下了异常：

} catch (Exception e) {
    e.printStackTrace();
    return null;
}

你不能轻易调试。中止的异常需要回滚（至少回滚到保存点，该保存点在创建时并未中止）。

当事务处于此 "aborted" 状态时，任何后续查询都将抛出此 current transaction is aborted, commands ignored until end of transaction block 异常。

您应该（至少）重新抛出异常以避免将来出现此类情况：

} catch (Exception cause) {
    // print or log the error here, before re-throwing
    throw new RuntimeException(cause);
}

有了这个，您将在第一时间得到正确的错误。

Hibernate、PostgreSQL：无法提取结果集，SQLState 25P02

Hibernate, PostgreSQL : Could not extract resultset, SQLState 25P02

java

postgresql

hibernate

postgresql-9.4