Hallo zusammen,
ich hoffe ihr könnt mir hier weiterhelfen ;-) Also ich versuch gearde ein Projekt mit Hibernate 4.1.1 unter der Verwendung der JPA auf dem GlassFish 3.1.2 zum laufen zu bringen. Aber ich bekomme immer eine NullPointerException beim erstellen des EntityManagers. Habe alle libraries von Hibernate in meinem Projekt eingebunden und auch in das glassfish-3.1.2\glassfish\lib Verzeichnis kopiert.
Hat jemand eine Idee woran das liegen könnte? Als einzigen Lösungsansatz habe ich folgendes gefunden:
https://hibernate.onjira.com/browse/HHH-7109Allerdings hab ich keine Ahnung auf welchen Value ich hibernate.transaction.jta.platform setzen soll, sofern das überhaupt das Problem ist.
meine perstistence.xml:
Code:
<?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="HibernateJPAPU" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>hibernatedb</jta-data-source>
<class>dto.Person</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update"/>
</properties>
</persistence-unit>
</persistence>
erstellen des EntityManagers, zu Testzwecken hier in einem Servlet:
Code:
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
EntityManagerFactory emf = Persistence.createEntityManagerFactory("HibernateJPAPU");
EntityManager em = emf.createEntityManager();
// EntityTransaction tx = em.getTransaction();
}
und der komplette Stacktrace:
Code:
WARNUNG: StandardWrapperValve[Test]: PWC1406: Servlet.service() for servlet Test threw exception
java.lang.NullPointerException
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:73)
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:115)
at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149)
at org.hibernate.ejb.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1208)
at org.hibernate.ejb.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:177)
at org.hibernate.ejb.EntityManagerImpl.<init>(EntityManagerImpl.java:89)
at org.hibernate.ejb.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:179)
at org.hibernate.ejb.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:174)
at servlets.Test.processRequest(Test.java:36)
at servlets.Test.doGet(Test.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.arp.DefaultAsyncExecutor.execute(DefaultAsyncExecutor.java:159)
at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:145)
at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:102)
at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:662)
Login
FAQ
Search