java - Hibernate 4.1.3 Multi-Tenancy 空指针异常

Question

我在使用 hibernate 4.1.3 的新 Multi-Tenancy 功能时遇到问题 我将 Glassfish 3.1 与 JPA2 和 Hibernate 4.1.3 一起用作提供程序。

这是我的persistence.xml

<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
    <persistence-unit name="AuroraServicePU" transaction-type="JTA">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>jdbc/sqlserver/Aurora</jta-data-source>
        <exclude-unlisted-classes>false</exclude-unlisted-classes>
        <properties>
            <property name="hibernate.show_sql" value="false"/>
            <property name="hibernate.default_batch_fetch_size" value="100"/>
            <property name="hibernate.cache.use_second_level_cache" value="false"/>
            <property name="hibernate.cache.use_query_cache" value="false"/>
            <property name="hibernate.tenant_identifier_resolver" value="org.dna.aurora.web.TenantResolver" />
            <property name="hibernate.multiTenancy" value="DISCRIMINATOR" />
        </properties>
    </persistence-unit>
</persistence>

这是我在尝试部署应用程序时遇到的异常。

INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final} INFO: HHH000412: Hibernate Core {4.1.3.Final} INFO: HHH000206: hibernate.properties not found INFO: HHH000021: Bytecode provider name : javassist INFO: HHH000204: Processing PersistenceUnitInfo [ name: AuroraServicePU ...] SEVERE: Exception while invoking class org.glassfish.persistence.jpa.JPADeployer prepare method SEVERE: Exception while preparing the app SEVERE: The log message is null. java.lang.NullPointerException at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$MultiTenantConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:260) at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:117) at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71) at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2277) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2273) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1742) at org.hibernate.ejb.EntityManagerFactoryImpl.(EntityManagerFactoryImpl.java:76) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73) at org.glassfish.persistence.jpa.PersistenceUnitLoader.loadPU(PersistenceUnitLoader.java:205) at org.glassfish.persistence.jpa.PersistenceUnitLoader.(PersistenceUnitLoader.java:119) at org.glassfish.persistence.jpa.JPADeployer$1.visitPUD(JPADeployer.java:213) at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:486) at org.glassfish.persistence.jpa.JPADeployer.createEMFs(JPADeployer.java:220) at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:166) at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:870) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:410) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240) at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:370) at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:355) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1067) at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1247) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235) at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:465) at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:222) at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:168) at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:234) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:619)

SEVERE: Exception while preparing the app

更新: 我再次阅读了文档并注意到这个重要的信息和平:

DISCRIMINATOR Correlates to the partitioned (discriminator) approach. It is an error to attempt to open a session without a tenant identifier using this strategy. This strategy is not yet implemented in Hibernate as of 4.0 and 4.1. Its support is planned for 5.0.

这真的意味着鉴别器策略现在不可用吗？ 也许这就是全部问题？

任何帮助都会很棒。 谢谢你， 伊多。

Answer 1

您还没有指定 Hibernate 应该如何获取连接。您是否阅读过与此相关的文档？ http://docs.jboss.org/hibernate/orm/4.1/devguide/en-US/html_single/#d5e4583

具体来说: http://docs.jboss.org/hibernate/orm/4.1/devguide/en-US/html_single/#d5e4658 http://docs.jboss.org/hibernate/orm/4.1/devguide/en-US/html_single/#d5e4702