TomEE + EclipseLink:Инъекция EntityManager не работает
https://stackoverflow.com//questions/10693905
-
12-12-2019 - |
italiano
english
français
española
中国
日本の
العربية
Deutsch
한국어
Português
RussianВопрос
Я пытаюсь понять это Пример JPA + EJB + Facelets запущен в веб-профиле TomEE.Поскольку в примере используется EclipseLink, я скачал EclipseLink и скопировал eclipselink/jlib/eclipselink.jar в тот TomEE/lib каталог.
Вопрос 1: Это единственный файл, который мне нужно скопировать?
У меня есть несколько Entity классы, один JSF SessionScoped ManagedBean для обслуживания веб-запросов, один EJB с отслеживанием состояния для обработки запросов к базе данных и еще один EJB, который загружает данные в базу данных при запуске.
Фрагменты кода ManagedBean и EJB с отслеживанием состояния приведены ниже:
@Singleton
@Startup
public class ConfigBean {
@EJB
private RequestBean request;
@PostConstruct
public void createData() {
request.createPart("1234-5678-01", 1, "ABC PART", new java.util.Date(),
"PARTQWERTYUIOPASXDCFVGBHNJMKL", null);
// more code here...
}
}
@Stateful
public class RequestBean {
private static Logger logger = Logger.getLogger("order.ejb.RequestBean");
@PersistenceContext
private EntityManager em;
public void createPart(String partNumber, int revision, String description,
java.util.Date revisionDate, String specification,
Serializable drawing) {
try {
Part part = new Part(partNumber, revision, description,
revisionDate, specification, drawing);
em.persist(part); // <--- EXCEPTION THROWN HERE
} catch (Exception ex) {
throw new EJBException(ex.getMessage());
}
}
}
Когда линия em.persist(part); при попытке выполнения RequestBean я получаю следующее исключение:
WARNING: Injection: No such property 'order.ejb.RequestBean/em' in class order.ejb.RequestBean
May 22, 2012 12:38:39 AM org.apache.openejb.core.transaction.EjbTransactionUtil handleSystemException
SEVERE: The bean instance business method encountered a system exception: The transaction has been marked rollback only because the bean encountered a non-application exception :javax.ejb.EJBException : null
javax.ejb.EJBTransactionRolledbackException: The transaction has been marked rollback only because the bean encountered a non-application exception :javax.ejb.EJBException : null
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.convertException(BaseEjbProxyHandler.java:350)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:288)
at order.ejb.RequestBean$LocalBeanProxy.createPart(order/ejb/RequestBean.java)
at order.ejb.ConfigBean.createData(ConfigBean.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$LifecycleInvocation.invoke(ReflectionInvocationContext.java:213)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:176)
at org.apache.openejb.monitoring.StatsInterceptor.PostConstruct(StatsInterceptor.java:104)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:138)
at org.apache.openejb.BeanContext.newInstance(BeanContext.java:1368)
at org.apache.openejb.core.singleton.SingletonInstanceManager.createInstance(SingletonInstanceManager.java:174)
at org.apache.openejb.core.singleton.SingletonInstanceManager.access$100(SingletonInstanceManager.java:66)
at org.apache.openejb.core.singleton.SingletonInstanceManager$1.call(SingletonInstanceManager.java:115)
at org.apache.openejb.core.singleton.SingletonInstanceManager$1.call(SingletonInstanceManager.java:113)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at org.apache.openejb.core.singleton.SingletonInstanceManager.getInstance(SingletonInstanceManager.java:124)
at org.apache.openejb.core.singleton.SingletonInstanceManager.initialize(SingletonInstanceManager.java:90)
at org.apache.openejb.core.singleton.SingletonInstanceManager.start(SingletonInstanceManager.java:81)
at org.apache.openejb.core.singleton.SingletonContainer.start(SingletonContainer.java:118)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:795)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:506)
at org.apache.tomee.catalina.TomcatWebAppBuilder.startInternal(TomcatWebAppBuilder.java:634)
at org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:588)
at org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:117)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.ejb.EJBException
at order.ejb.RequestBean.createPart(RequestBean.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:176)
at org.apache.openejb.monitoring.StatsInterceptor.invoke(StatsInterceptor.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.cdi.CdiInterceptor.invoke(CdiInterceptor.java:129)
at org.apache.openejb.cdi.CdiInterceptor.access$000(CdiInterceptor.java:45)
at org.apache.openejb.cdi.CdiInterceptor$1.call(CdiInterceptor.java:66)
at org.apache.openejb.cdi.CdiInterceptor.aroundInvoke(CdiInterceptor.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:138)
at org.apache.openejb.core.stateful.StatefulContainer.businessMethod(StatefulContainer.java:648)
at org.apache.openejb.core.stateful.StatefulContainer.invoke(StatefulContainer.java:353)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler.synchronizedBusinessMethod(EjbObjectProxyHandler.java:260)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:240)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:91)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:284)
... 45 more
Поскольку я не очень хорошо знаком с магией Java EE, я почти понятия не имею, что здесь происходит не так, но мне бы хотелось знать, что вызывает первую строку в трассировке стека, приведенную выше:
WARNING: Injection: No such property 'order.ejb.RequestBean/em' in class order.ejb.RequestBean
Вопрос 2: По какой-то причине внедрение Entity Manager, похоже, не работает.У кого-нибудь есть какие-нибудь идеи, почему?
Для полноты картины ниже приведен мой persistence.xml, который находится в project/src/main/webapp/classes/META-INF/ каталог:
<?xml version="1.0" encoding="UTF-8"?>
<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="order" transaction-type="JTA">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="both" />
</properties>
</persistence-unit>
</persistence>
исходный код
На случай, если кто-нибудь захочет ознакомиться со структурой каталогов, исходным кодом, конфигурационными файлами и т.д.из проекта я загрузил его на github здесь.
Решение
Обновленный persistence.xml чтобы использовать OpenJPA, в соответствии с Общие свойства PersistenceProvider:
<?xml version="1.0" encoding="UTF-8"?>
<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="order" transaction-type="JTA">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<property name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(foreignKeys=true,schemaAction='dropDB,add')" />
<property name="openjpa.jdbc.SchemaFactory" value="native(foreignKeys=true)" />
<property name="openjpa.jdbc.MappingDefaults"
value="ForeignKeyDeleteAction=restrict, JoinForeignKeyDeleteAction=restrict" />
<property name="openjpa.Log" value="DefaultLevel=TRACE,SQL=TRACE" />
</properties>
</persistence-unit>
</persistence>
Все еще есть следующее исключение:
INFO - Starting OpenJPA 2.2.0
java.lang.NullPointerException
at order.web.OrderManager.getOrders(OrderManager.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:64)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:58)
at org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:169)
at org.apache.el.parser.AstValue.getValue(AstValue.java:169)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
at org.apache.myfaces.view.facelets.el.ContextAwareTagValueExpression.getValue(ContextAwareTagValueExpression.java:96)
at javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:246)
at javax.faces.component.UIData.getValue(UIData.java:2031)
at javax.faces.component.UIData.createDataModel(UIData.java:1979)
at javax.faces.component.UIData.getDataModel(UIData.java:1956)
at javax.faces.component.UIData.getRowCount(UIData.java:478)
at org.apache.myfaces.shared.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:366)
at org.apache.myfaces.shared.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:214)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:626)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:524)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:533)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1908)
at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
По-видимому, это известная ошибка в TomEE 1.0.0, которая была устранена в trunk, поэтому я скачал последний снимок beta3
Теперь все работает нормально.
Не связан с StackOverflow
