Ich bin neu bei der Arbeit mit JPA und Hibernate, also habe ich einige Probleme mit der Typquery. Ich habe eine Funktion, die eine Zeichenfolge und den Namen eines "Departamento" empfängt und das Objekt ("Carrera") abruft, dem dieses "Departamento" zugeordnet ist. In sqldeveloper habe ich kein Problem, aber in typedquery ist es ein bisschen mühsam geworden. Ich bin mir sicher, dass die Syntax meiner Abfrage falsch ist, aber ich weiß nicht, wie ich das beheben soll. Ich wäre dankbar, wenn mir jemand helfen könnte.java.lang.ClassNotFoundException: org.hibernate.collection.internal.PersistentBag - Nicht in der Lage, die Klasse zu finden, die ich suche
ClientePrueba.java:
public class ClientePrueba {
public static void main(String[] args) throws NamingException {
DepartamentosBeanRemote departamentosBean = (DepartamentosBeanRemote) InitialContext.doLookup("EjemploEJB/DepartamentosBean!com.servicios.DepartamentosBeanRemote");
MateriasBeanRemote materiasBean = (MateriasBeanRemote) InitialContext.doLookup("EjemploEJB/MateriasBean!com.servicios.MateriasBeanRemote");
CarrerasBeanRemote carrerasBean = (CarrerasBeanRemote) InitialContext.doLookup("EjemploEJB/CarrerasBean!com.servicios.CarrerasBeanRemote");
System.out.println("Obtengo todas las carreras del departamento MATEMATICAS");
List<Carrera> carreras = carrerasBean.obtenerPorDepartamento("MATEMATICAS");
for (Carrera car : carreras) {
System.out.println(car.getNombre());
}
}
}
CarrerasBean.java
/**
* Session Bean implementation class CarrerasBean
*/
@Stateless
public class CarrerasBean implements CarrerasBeanRemote {
@PersistenceContext
private EntityManager em;
/**
* Default constructor.
*/
public CarrerasBean() {
// TODO Auto-generated constructor stub
}
@Override
public List<Carrera> obtenerPorDepartamento(String departamento) {
TypedQuery<Carrera> query = em.createQuery("SELECT c FROM Carrera c WHERE c.departamento.nombre = :depto", Carrera.class)
.setParameter("depto", departamento);
return query.getResultList();
}
}
Fehler:
Exception in thread "main" javax.ejb.EJBException: java.lang.ClassNotFoundException: org.hibernate.collection.internal.PersistentBag at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:236) at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:181) at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:144) at com.sun.proxy.$Proxy4.obtenerPorDepartamento(Unknown Source) at com.cliente.ClientePrueba.main(ClientePrueba.java:130) Caused by: java.lang.ClassNotFoundException: org.hibernate.collection.internal.PersistentBag at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at org.jboss.marshalling.AbstractClassResolver.loadClass(AbstractClassResolver.java:131) at org.jboss.marshalling.AbstractClassResolver.resolveClass(AbstractClassResolver.java:112) at org.jboss.marshalling.river.RiverUnmarshaller.doReadClassDescriptor(RiverUnmarshaller.java:949) at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1256) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224) at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1746) at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1659) at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1286) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:224) at org.jboss.marshalling.river.RiverUnmarshaller.doReadCollectionObject(RiverUnmarshaller.java:180) at org.jboss.marshalling.river.RiverUnmarshaller.readCollectionData(RiverUnmarshaller.java:777) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:653) at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:209) at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:41) at org.jboss.ejb.client.remoting.MethodInvocationResponseHandler$MethodInvocationResultProducer.getResult(MethodInvocationResponseHandler.java:103) at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:276) at org.jboss.ejb.client.EJBObjectInterceptor.handleInvocationResult(EJBObjectInterceptor.java:64) at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290) at org.jboss.ejb.client.EJBHomeInterceptor.handleInvocationResult(EJBHomeInterceptor.java:88) at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290) at org.jboss.ejb.client.TransactionInterceptor.handleInvocationResult(TransactionInterceptor.java:46) at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:290) at org.jboss.ejb.client.ReceiverInterceptor.handleInvocationResult(ReceiverInterceptor.java:129) at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:265) at org.jboss.ejb.client.EJBClientInvocationContext.awaitResponse(EJBClientInvocationContext.java:453) at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:202) ... 4 more
Haben Sie alle Hibernate-Bibliotheken hinzugefügt? –
Ich dachte, dass Wildfly alle Bibliotheken hatte? – user2912069