Buongiorno a tutti,
sto lavorando su Eclipse ad un progetto JavaEE. Per il momento ho creato un normale progetto "EJB" e, tramite le funzioni di JPA e una connessione ad un database Mysql chiamato "qax" ho creato le entità a partire dalle tabelle.
Dopo di che ho creato dei Session Bean per gestire la logica di business (prelevare dati dal db ed eseguire operazioni CRUD) creando dei metodi ad hoc che implementano un interfaccia remota.
La struttura del progetto è
MioProgetto
--ejbModule
-----package it.bean
----------> MioBean
----- package it.service
----------> TestI
----------> MiaClasse
-----package it.test
----------> Main
E questo è un esempio di codice:
codice:@Remote interface TestI { void hello(); } @Stateless public class MiaClasse implements TestI { void hello() { System.out.println("Hello world"); } }
ed una classe GestLookup che dovrebbe gestire il lookup jndi:
codice:public class GestLookup { private TestI testI; public GestLookup () throws RuntimeException { try { testI= (TestI )new InitialContext().lookup("it.service.MiaClasse"); } catch(NamingException ex) { throw new RuntimeException(ex); }
Mentre questo è il mio persistence.xml:
codice:<?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="QaxEJB" transaction-type="JTA"> <jta-data-source>qaxDB</jta-data-source> <class>it.bean.MioBean</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties/> </persistence-unit> </persistence>
Ora vorrei testare questa classe per vedere se funziona in un metodo Main ma i problemi sono che:
1) Uso Glassfish Server, provando a deployare il progetto ho questo errore
Gogglando qua e la non sono riuscito a capire il motivo, qualcuno esperto può aiutarmi?codice:2017-08-09T17:27:25.781+0200|Informazioni: Created EjbThreadPoolExecutor with thread-core-pool-size 16 thread-max-pool-size 32 thread-keep-alive-seconds 60 thread-queue-capacity 2147483647 allow-core-thread-timeout false 2017-08-09T17:27:26.633+0200|Grave: Exception while invoking class org.glassfish.persistence.jpa.JPADeployer prepare method 2017-08-09T17:27:26.635+0200|Grave: Exception while preparing the app 2017-08-09T17:27:26.636+0200|Grave: java.lang.ClassCastException at java.lang.Class.cast(Class.java:2990) at org.glassfish.persistence.common.PersistenceHelper.lookupPMResource(PersistenceHelper.java:63) at org.glassfish.persistence.jpa.ProviderContainerContractInfoBase.lookupDataSource(ProviderContainerContractInfoBase.java:71) at org.glassfish.persistence.jpa.PersistenceUnitInfoImpl.<init>(PersistenceUnitInfoImpl.java:108) at org.glassfish.persistence.jpa.PersistenceUnitLoader.loadPU(PersistenceUnitLoader.java:155) at org.glassfish.persistence.jpa.PersistenceUnitLoader.<init>(PersistenceUnitLoader.java:120) at org.glassfish.persistence.jpa.JPADeployer$1.visitPUD(JPADeployer.java:224) at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:495) at org.glassfish.persistence.jpa.JPADeployer.createEMFs(JPADeployer.java:233) at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:168) at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:871) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:410) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240) at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:389) at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:348) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:363) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1085) at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:95) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1291) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1259) at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:461) at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:212) at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:179) at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117) at com.sun.enterprise.v3.services.impl.ContainerMapper$Hk2DispatcherCallable.call(ContainerMapper.java:354) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229) 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) 2017-08-09T17:27:26.667+0200|Grave: Exception while preparing the app
Grazie
Rispondi quotando
Originariamente inviata da LeleFT
