[我正在尝试使用休眠的Red Hat JBoss-EAP 7.1来做一个webapp,在我的代码中,我实例化了一个EntityManager像这样(在MessageDaoImpl类中:)>
public class MessageDaoImpl implements MessageDao { private EntityManager em; public MessageDaoImpl() { em = Persistence.createEntityManagerFactory("primary").createEntityManager(); } }
这是我的persistance.xml文件
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="primary"> <jta-data-source>java:/datasources/myDS-ds</jta-data-source> <properties> <!-- Properties for Hibernate --> <property name="hibernate.hbm2ddl.auto" value="update" /> <property name="hibernate.show_sql" value="false" /> </properties> </persistence-unit> </persistence>
而且我可以在这里找到我的数据源:
当我连接时,我得到了这个stackError:
<<javax.servlet.ServletException: [PersistenceUnit: primary] Unable to build Hibernate SessionFactory at javax.faces.api//javax.faces.webapp.FacesServlet.service(FacesServlet.java:671) at io.undertow.servlet//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) at io.undertow.servlet//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) at io.undertow.core//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) at io.undertow.servlet//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.core//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.core//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.core//io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet//io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.core//io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) at io.undertow.core//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.core//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) at io.undertow.core//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68) at io.undertow.core//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) at io.undertow.servlet//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) at io.undertow.servlet//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508) at org.wildfly.extension.undertow//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) at io.undertow.servlet//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104) at io.undertow.core//io.undertow.server.Connectors.executeRootHandler(Connectors.java:326) at io.undertow.core//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:830) Caused by: javax.persistence.PersistenceException: [PersistenceUnit: primary] Unable to build Hibernate SessionFactory at org.hibernate//org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:953) at org.hibernate//org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:883) at org.hibernate//org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58) at javax.persistence.api//javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55) at javax.persistence.api//javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39) at deployment.resolution.war//dao.impl.MessageDaoImpl.<init>(MessageDaoImpl.java:18) at deployment.resolution.war//beans.SendMessageBean.<init>(SendMessageBean.java:21) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481) at org.jboss.weld.core//org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:119) at org.jboss.weld.core//org.jboss.weld.injection.ConstructorInjectionPoint.invokeAroundConstructCallbacks(ConstructorInjectionPoint.java:92) at org.jboss.weld.core//org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:78) at org.jboss.weld.core//org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28) at org.jboss.weld.core//org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:112) at org.jboss.weld.core//org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:180) at org.jboss.weld.core//org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:158) at org.jboss.weld.core//org.jboss.weld.context.AbstractContext.get(AbstractContext.java:96) at org.jboss.weld.core//org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100) at org.jboss.weld.core//org.jboss.weld.bean.ContextualInstanceStrategy$CachingContextualInstanceStrategy.get(ContextualInstanceStrategy.java:177) at org.jboss.weld.core//org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50) at org.jboss.weld.core//org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:758) at org.jboss.weld.core//org.jboss.weld.el.AbstractWeldELResolver.lookup(AbstractWeldELResolver.java:107) at org.jboss.weld.core//org.jboss.weld.el.AbstractWeldELResolver.getValue(AbstractWeldELResolver.java:90) at org.jboss.as.jsf-injection//org.jboss.as.jsf.injection.weld.ForwardingELResolver.getValue(ForwardingELResolver.java:46) at javax.el.api//javax.el.CompositeELResolver.getValue(CompositeELResolver.java:188) at com.sun.jsf-impl//com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) at com.sun.jsf-impl//com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) at org.glassfish.javax.el//com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116) at org.glassfish.javax.el//com.sun.el.parser.AstValue.getBase(AstValue.java:150) at org.glassfish.javax.el//com.sun.el.parser.AstValue.getValue(AstValue.java:199) at org.glassfish.javax.el//com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226) at org.jboss.weld.core//org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) at org.jboss.weld.core//org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) at com.sun.jsf-impl//com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) at javax.faces.api//javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) at javax.faces.api//javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) at javax.faces.api//javax.faces.component.UIOutput.getValue(UIOutput.java:174) at javax.faces.api//javax.faces.component.UIInput.getValue(UIInput.java:291) at com.sun.jsf-impl//com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:205) at com.sun.jsf-impl//com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:355) at com.sun.jsf-impl//com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:164) at javax.faces.api//javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:920) at javax.faces.api//javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) at javax.faces.api//javax.faces.render.Renderer.encodeChildren(Renderer.java:176) at javax.faces.api//javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890) at javax.faces.api//javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) at javax.faces.api//javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) at javax.faces.api//javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) at com.sun.jsf-impl//com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:458) at com.sun.jsf-impl//com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:135) at javax.faces.api//javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) at javax.faces.api//javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) at com.sun.jsf-impl//com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.jsf-impl//com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.jsf-impl//com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) at javax.faces.api//javax.faces.webapp.FacesServlet.service(FacesServlet.java:659) ... 39 more Caused by: java.lang.NullPointerException at org.hibernate//org.hibernate.resource.transaction.backend.jta.internal.DdlTransactionIsolatorJtaImpl.<init>(DdlTransactionIsolatorJtaImpl.java:34) at org.hibernate//org.hibernate.tool.schema.internal.Helper.buildDefaultDdlTransactionIsolator(Helper.java:145) at org.hibernate//org.hibernate.tool.schema.internal.HibernateSchemaManagementTool.getDdlTransactionIsolator(HibernateSchemaManagementTool.java:180) at org.hibernate//org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:90) at org.hibernate//org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:176) at org.hibernate//org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:65) at org.hibernate//org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:476) at org.hibernate//org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:422) at org.hibernate//org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:880)
有人知道我如何实例化我的entityManager吗?