我对 JPA (OpenJPA) + Spring (Web Flow using Spring Web MVC) + H2 数据库引擎有疑问。我为我的简单 Web 应用程序提供了简单的 RegisterDAO。我正在使用依赖注入将 EntityManagerFactory（通过 @PersistentUnit 注释）注入我的 RegisterDAO。一切看起来都很好（EntityManagerFactory 不为空，它似乎被注入了）但是当我试图从这个工厂创建 EntityManager 时出现问题。GlassFish（我使用的）抛出类似这样的异常（无法以原始形式打印，因为消息是波兰语:)）：
org.springframework.webflow.execution.FlowExecutionException: Exception thrown in state 'register' of flow 'register'
at org.springframework.webflow.engine.impl.FlowExecutionImpl.wrap(FlowExecutionImpl.java:569)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:263)
at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
at org.springframework.webflow.mvc.servlet.FlowController.handleRequest(FlowController.java:174)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:788)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
Caused by: <openjpa-2.0.1-r422266:989424 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: Schema 'INFORMATION_SCHEMA' doesn't exists {SELECT SEQUENCE_SCHEMA, SEQUENCE_NAME FROM INFORMATION_SCHEMA.SEQUENCES} [code=-1, state=42Y07]
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:556)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:456)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:155)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:159)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:117)
at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:212)
at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:156)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:227)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:154)
at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:60)
at com.sun.enterprise.container.common.impl.EntityManagerFactoryWrapper.createEntityManager(EntityManagerFactoryWrapper.java:101)
at umk.dumont.db.dao.RegisterDAO.checkIfLoginIsFree(RegisterDAO.java:156)
at umk.dumont.services.RegisterService.validateForm(RegisterService.java:95)
at umk.dumont.models.RegisterFormModel.validateRegister(RegisterFormModel.java:40)
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:597)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:186)
at org.springframework.webflow.validation.ValidationHelper.invokeValidateMethodForCurrentState(ValidationHelper.java:122)
at org.springframework.webflow.validation.ValidationHelper.invokeModelValidationMethod(ValidationHelper.java:109)
at org.springframework.webflow.validation.ValidationHelper.validate(ValidationHelper.java:101)
at org.springframework.webflow.mvc.view.AbstractMvcView.validate(AbstractMvcView.java:625)
at org.springframework.webflow.mvc.view.AbstractMvcView.processUserEvent(AbstractMvcView.java:217)
at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:248)
at org.springframework.webflow.engine.ViewState.resume(ViewState.java:218)
at org.springframework.webflow.engine.Flow.resume(Flow.java:545)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:259)
... 34 more
Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Schema 'INFORMATION_SCHEMA' doesn't exists {SELECT SEQUENCE_SCHEMA, SEQUENCE_NAME FROM INFORMATION_SCHEMA.SEQUENCES} [code=-1, state=42Y07]
at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:273)
at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:253)
at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.access$000(LoggingConnectionDecorator.java:70)
at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection.prepareStatement(LoggingConnectionDecorator.java:305)
at org.apache.openjpa.lib.jdbc.DelegatingConnection.prepareStatement(DelegatingConnection.java:186)
at org.apache.openjpa.lib.jdbc.ConfiguringConnectionDecorator$ConfiguringConnection.prepareStatement(ConfiguringConnectionDecorator.java:155)
at org.apache.openjpa.lib.jdbc.DelegatingConnection.prepareStatement(DelegatingConnection.java:175)
at org.apache.openjpa.jdbc.sql.DBDictionary.prepareStatement(DBDictionary.java:5131)
at org.apache.openjpa.jdbc.sql.DBDictionary.getSequences(DBDictionary.java:3942)
at org.apache.openjpa.jdbc.schema.SchemaGenerator.generateSequences(SchemaGenerator.java:960)
at org.apache.openjpa.jdbc.schema.SchemaGenerator.generateSchema(SchemaGenerator.java:365)
at org.apache.openjpa.jdbc.schema.SchemaGenerator.generateSchemas(SchemaGenerator.java:300)
at org.apache.openjpa.jdbc.schema.SchemaTool.getDBSchemaGroup(SchemaTool.java:1142)
at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:348)
at org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:325)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:504)
... 61 more
这很奇怪，因为当我使用 H2 控制台并输入“SELECT SEQUENCE_SCHEMA, SEQUENCE_NAME FROM INFORMATION_SCHEMA.SEQUENCES”时，一切正常（我看到这组名为 INFORMATION_SCHEMA 的表）。当然，我将这个 sql 语句称为登录用户名，我在 persistence.xml 文件中使用它。
有任何想法吗？
编辑：我的配置：persistence.xml：
<property name="openjpa.ConnectionDriverName" value="org.h2.Driver"/>
<property name="openjpa.ConnectionURL" value="jdbc:h2:F:\baza"/>
<property name="openjpa.ConnectionUserName" value="sa"/>
<property name="openjpa.ConnectionPassword" value="haslodobazy"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE, Tool=INFO"/>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
春季的applicationCotext.xml：
<jee:jndi-lookup id="entityManagerFactory" jndi-name="myPersistenceUnit"/>
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
<bean id="registerDaoImpl" class="umk.dumont.db.dao.RegisterDAO" />
<bean id="service" class="umk.dumont.services.RegisterService">
<property name="registerDAO" ref="registerDaoImpl"/>
</bean>
<bean class="umk.dumont.models.RegisterFormModel">
<property name="service" ref="service"/>
</bean>
网络配置：
<persistence-unit-ref>
<persistence-unit-ref-name>myPersistenceUnit</persistence-unit-ref-name>
<persistence-unit-name>persistenceUnitNameFromPersistenceXML</persistence-unit-name>
</persistence-unit-ref>
我使用 Maven，我的依赖项：
<dependencies>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jpa</artifactId>
<version>2.0.8</version>
</dependency>
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-binding</artifactId>
<version>2.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-js</artifactId>
<version>2.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-webflow</artifactId>
<version>2.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa</artifactId>
<version>2.0.1</version>
<!--<scope>runtime</scope>-->
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.3.150</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.2</version>
<scope>test</scope>
</dependency>