Não consigo salvar os dados no banco de dados (JSF)

Programação Java
, ,
#1

Erro mostrado no GlasshFish 4.1.1:
Fiz algumas alterações e agora obtenho essas pilha:

> Warning:   A system exception occurred during an invocation on EJB AlunoController, method: public void br.edu.exemplojsf.controller.BaseController.salvarRegistro(javax.faces.event.ActionEvent)
> Warning:   javax.ejb.EJBException
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:752)
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:702)
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:507)
> 	at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
> 	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
> 	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2044)
> 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)
> 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
> 	at com.sun.proxy.$Proxy196.salvarRegistro(Unknown Source)
> 	at br.edu.exemplojsf.controller.__EJB31_Generated__AlunoController__Intf____Bean__.salvarRegistro(Unknown Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:434)
> 	at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
> 	at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
> 	at org.jboss.weld.bean.proxy.InjectionPointPropagatingEnterpriseTargetBeanInstance.invoke(InjectionPointPropagatingEnterpriseTargetBeanInstance.java:67)
> 	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
> 	at br.edu.exemplojsf.controller.AlunoController$Proxy$_$$_Weld$EnterpriseProxy$.salvarRegistro(Unknown Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at javax.el.ELUtil.invokeMethod(ELUtil.java:332)
> 	at javax.el.BeanELResolver.invoke(BeanELResolver.java:537)
> 	at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
> 	at com.sun.el.parser.AstValue.invoke(AstValue.java:283)
> 	at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
> 	at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
> 	at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
> 	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
> 	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:147)
> 	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
> 	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:814)
> 	at javax.faces.component.UICommand.broadcast(UICommand.java:300)
> 	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
> 	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
> 	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
> 	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
> 	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
> 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
> 	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
> 	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
> 	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
> 	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
> 	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
> 	at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
> 	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
> 	at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
> 	at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
> 	at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
> 	at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
> 	at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
> 	at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
> 	at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
> 	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
> 	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
> 	at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.ClassCastException: br.edu.exemplojsf.entidades.Aluno cannot be cast to br.edu.exemplojsf.entidades.InterfaceEntidades
> 	at br.edu.exemplojsf.controller.BaseController.salvarRegistro(BaseController.java:145)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
> 	at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
> 	at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
> 	at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
> 	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
> 	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
> 	at 
> Warning:   /index.xhtml @32,143 actionListener="#{alunoController.salvarRegistro(event)}": javax.ejb.EJBException
> javax.el.ELException: /index.xhtml @32,143 actionListener="#{alunoController.salvarRegistro(event)}": javax.ejb.EJBException
> 	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:111)
> 	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:147)
> 	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
> 	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:814)
> 	at javax.faces.component.UICommand.broadcast(UICommand.java:300)
> 	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
> 	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
> 	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
> 	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
> 	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
> 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
> 	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
> 	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
> 	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
> 	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
> 	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
> 	at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
> 	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
> 	at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
> 	at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
> 	at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
> 	at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
> 	at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
> 	at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
> 	at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
> 	at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
> 	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
> 	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
> 	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
> 	at java.lang.Thread.run(Thread.java:748)
> Caused by: javax.ejb.EJBException
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:752)
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:702)
> 	at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:507)
> 	at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
> 	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
> 	at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2044)
> 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)
> 	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
> 	at com.sun.proxy.$Proxy196.salvarRegistro(Unknown Source)
> 	at br.edu.exemplojsf.controller.__EJB31_Generated__AlunoController__Intf____Bean__.salvarRegistro(Unknown Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:434)
> 	at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
> 	at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
> 	at org.jboss.weld.bean.proxy.InjectionPointPropagatingEnterpriseTargetBeanInstance.invoke(InjectionPointPropagatingEnterpriseTargetBeanInstance.java:67)
> 	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
> 	at br.edu.exemplojsf.controller.AlunoController$Proxy$_$$_Weld$EnterpriseProxy$.salvarRegistro(Unknown Source)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at javax.el.ELUtil.invokeMethod(ELUtil.java:332)
> 	at javax.el.BeanELResolver.invoke(BeanELResolver.java:537)
> 	at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
> 	at com.sun.el.parser.AstValue.invoke(AstValue.java:283)
> 	at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
> 	at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
> 	at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
> 	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
> 	... 38 more
1 curtida
#2

Verifique OQ está tentando salvar e ONDE.

1 curtida
#3

Boa tarde , verifiquei e não consegui encontrar o problema:

Minha Classe AlunoController:

import br.edu.exemplojsf.dao.AlunoDao;
import br.edu.exemplojsf.entidades.Aluno;
import java.io.Serializable;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.faces.bean.ViewScoped;
import javax.faces.event.ActionEvent;
import javax.inject.Named;

/**
*

  • @author Humberto
    */
    @ViewScoped
    @Named(value=“alunoController”)
    @Stateless
    public class AlunoController extends BaseController<Aluno, Integer> implements Serializable {

    @EJB
    private AlunoDao alunoDao;

    public AlunoController() {
    }

    @PostConstruct
    public void inicializar(){
    setObjeto(new Aluno());
    setObjetoDao(alunoDao);
    }

    @Override
    public Aluno getObjeto() {
    return super.getObjeto();
    }

    @Override
    public void setObjeto(Aluno objeto) {
    super.setObjeto(objeto);
    }

    public void salvarAluno(ActionEvent evt){
    Aluno p = new Aluno();
    p.setRa(123);
    p.setNome(“Aluno”);
    alunoDao.save§;
    System.out.println(“Gravado com sucesso”);
    }

    public void buscarAluno(ActionEvent evt){
    List lst = alunoDao.getByField(“nome”, “BRASIL”);
    for (Aluno p : lst){
    System.out.println("p: " + p.getId() + " – " + p.getNome());
    }
    }

    public void excluirAluno(ActionEvent evt){
    Aluno p = alunoDao.getByID(1);
    alunoDao.delete§;
    System.out.println(“Excluído do banco de dados”);
    }

    public List getAlunos() {
    return alunoDao.getAll(); //To change body of generated methods, choose Tools | Templates.
    }

}

Minha BaseController:

import br.edu.exemplojsf.dao.BaseDao;
import br.edu.exemplojsf.entidades.InterfaceEntidades;
import br.edu.exemplojsf.util.FacesUtils;
import java.io.Serializable;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.event.ActionEvent;

/**
*
*

  • @param

  • @param
    */
    public class BaseController<T, ID> implements Serializable {

    private BaseDao<T, ID> objetoDao;

    public BaseDao<T, ID> getObjetoDao() {
    return objetoDao;
    }

    private T objeto;

    public T getObjeto() {
    return objeto;
    }

    public BaseController() {
    }

    public void setObjeto(T objeto) {
    this.objeto = objeto;
    }

    public void setObjetoDao(BaseDao<T, ID> objetoDao) {
    this.objetoDao = objetoDao;
    }

    public void atualizar(ActionEvent event) {
    try {
    if (validacoes(event)) {
    objetoDao.update((T) objeto);
    metodoDepoisDoSalvarAtualizar();
    }
    } catch (Exception e) {
    FacesUtils.addErrorMessage("Um erro ocorreu na atualização do registro. Informe ao administrados o sistema o seguinte erro: " + e.toString());
    e.printStackTrace();
    }
    }

    public void metodoDepoisDoSalvarAtualizar() {
    }

    public void salvar(ActionEvent event) {
    try {
    if (validacoes(event)) {
    objetoDao.save((T) objeto);
    metodoDepoisDoSalvarAtualizar();
    }
    } catch (Exception e) {
    FacesUtils.addErrorMessage("Um erro ocorreu na gravação do registro. Informe ao administrados o sistema o seguinte erro: " + e.toString());
    e.printStackTrace();
    }
    }

    public void excluir(ActionEvent event) {
    Integer id = ((InterfaceEntidades) objeto).getId();
    Integer codigo = 0;
    try {
    objetoDao.delete((T) objeto);
    objetoLimpo();
    ((InterfaceEntidades) objeto).setId(id);
    objetoLimpo();
    } catch (Exception e) {
    FacesUtils.addInfoMessage(“Não foi possível excluír. O registro não pode ser excluído por um erro interno ou por ser referênciado por um outro registro.”);
    System.out.println("Erro ao excluir " + e.getMessage());
    e.printStackTrace();
    }
    }

    public List todos() {
    return objetoDao.getAll();
    }

    public List pesquisar(String sql) {
    return objetoDao.pesq(sql, “”);
    }

    public T buscarPorChave(Object chave) {
    return (T) objetoDao.getByID((ID) chave);
    }

    public void objetoLimpo() {
    try {
    objeto = (T) objeto.getClass().newInstance();
    } catch (InstantiationException | IllegalAccessException ex) {
    Logger.getLogger(BaseController.class.getName()).log(Level.SEVERE, null, ex);
    }
    }

    public InterfaceEntidades objetoPreenchido(Object data) {
    return (InterfaceEntidades) data;
    }

    public Boolean validacoes(ActionEvent event) {
    return true;
    }

    public void alterar(ActionEvent click) {
    editar(click);
    }

    public void editar(ActionEvent event) {
    if ((getObjeto() != null) && ((InterfaceEntidades) getObjeto()).getId() != null) {
    }
    }

    public void visualizar(ActionEvent event) {
    }

    public void inserir(ActionEvent event) {
    objetoLimpo();
    }

    public void cancelar(ActionEvent event) {
    if (((InterfaceEntidades) getObjeto()).getId() != null) {
    setObjeto(objetoDao.getByID((ID) ((InterfaceEntidades) getObjeto()).getId()));
    } else {
    objetoLimpo();
    }
    }

    public void salvarRegistro(ActionEvent event) {
    if (((InterfaceEntidades) objeto).getId() != null) {
    atualizar(event);
    } else {
    salvar(event);
    }
    }

}

Minha InterfaceEntidades:

package br.edu.exemplojsf.entidades;

/**
*

  • @author Humberto
    */
    public interface InterfaceEntidades {

    public abstract void setId(Integer id);
    public abstract Integer getId();

}

Minha classe BaseDAO:

import java.util.List;

/**
*

  • @author Humberto
  • @param
  • @param
    */

public interface BaseDao<T, ID> {

public abstract T save(T entidade);

public abstract T getByID(ID id);

public abstract void delete(T entidade);

public abstract void update (T entidade);

public abstract List<T> getAll();

public abstract List pesq(String query, String ordenacao);

public abstract List<T> getByField(String campo, String texto);

}

Minha BaseDAOImp:

import java.lang.reflect.ParameterizedType;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;

/**
*

  • @author Humberto
    */
    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public class BaseDaoImp<T, ID> implements BaseDao<T, ID> {

    @PersistenceContext(unitName = “ExemploJSF”)
    private EntityManager entityManager;
    private Class persistentClass;
    private static Logger log;
    // @Resource
    // private UserTransaction userTransaction;

    public BaseDaoImp() {
    log = Logger.getLogger(this.getClass().getName());
    this.persistentClass = (Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];

    }

    public Class getPersistentClass() {
    return persistentClass;
    }

    public EntityManager getEntityManager() {
    return entityManager;
    }

    public void setEntityManager(EntityManager entityManager) {
    this.entityManager = entityManager;
    }

    @Override
    public T save(T entidade) {
    try {
    getEntityManager().persist(entidade);
    } catch (Exception ex) {
    Logger.getLogger(BaseDaoImp.class.getName()).log(Level.SEVERE, null, ex);
    }
    return (T) entidade;
    }

    @Override
    public T getByID(ID id) {
    T entidade = (T) getEntityManager().find(getPersistentClass(), id);
    return entidade;
    }

    @Override
    public void delete(T entidade) {
    try {
    if (!getEntityManager().contains(entidade)) {
    entidade = getEntityManager().merge(entidade);
    }
    getEntityManager().remove(entidade);
    } catch (Exception ex) {
    Logger.getLogger(BaseDaoImp.class.getName()).log(Level.SEVERE, null, ex);
    }
    }

    @Override
    public void update(T entidade) {
    try {
    getEntityManager().merge(entidade);
    } catch (Exception ex) {
    Logger.getLogger(BaseDaoImp.class.getName()).log(Level.SEVERE, null, ex);
    }
    }

    @Override
    public List getAll() {
    Query query;
    String queryS;
    queryS = “SELECT obj FROM " + persistentClass.getSimpleName() + " obj”;
    query = getEntityManager().createQuery(queryS);
    return query.getResultList();
    }

    @Override
    public List pesq(String query, String ordenacao) {
    try {
    if (entityManager.isOpen()) {
    return getEntityManager().createQuery(query + " " + ordenacao).getResultList();
    } else {
    return null;
    }
    } catch (javax.persistence.NoResultException e) {
    return null;
    }
    }

    @Override
    public List getByField(String campo, String texto) {
    List lista;
    lista = getEntityManager().createQuery(“SELECT p FROM " + persistentClass.getSimpleName()
    + " p WHERE p.” + campo + " LIKE ‘" + texto + "%’ ORDER BY p.id DESC").getResultList();
    return lista;
    }

}

Classe Aluno:

import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;

/**
*

  • @author Humberto
    */
    @Entity
    @Table(name = “aluno”)
    @XmlRootElement
    @NamedQueries({
    @NamedQuery(name = “Aluno.findAll”, query = “SELECT a FROM Aluno a”)
    , @NamedQuery(name = “Aluno.findById”, query = “SELECT a FROM Aluno a WHERE a.id = :id”)
    , @NamedQuery(name = “Aluno.findByRa”, query = “SELECT a FROM Aluno a WHERE a.ra = :ra”)
    , @NamedQuery(name = “Aluno.findByNome”, query = “SELECT a FROM Aluno a WHERE a.nome = :nome”)
    , @NamedQuery(name = “Aluno.findByRg”, query = “SELECT a FROM Aluno a WHERE a.rg = :rg”)
    , @NamedQuery(name = “Aluno.findByCpf”, query = “SELECT a FROM Aluno a WHERE a.cpf = :cpf”)})
    public class Aluno implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = “id”)
    private Integer id;
    @Basic(optional = false)
    @NotNull
    @Column(name = “ra”)
    private int ra;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = “nome”)
    private String nome;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = “rg”)
    private String rg;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = “cpf”)
    private String cpf;

    public Aluno() {
    }

    public Aluno(Integer id) {
    this.id = id;
    }

    public Aluno(Integer id, int ra, String nome, String rg, String cpf) {
    this.id = id;
    this.ra = ra;
    this.nome = nome;
    this.rg = rg;
    this.cpf = cpf;
    }
    getters e setters…

Poderiam me ajudar a entender o erro atual?

#4

Sei que é antigo esse post, mas acho que posso ajudar. Eu fiz um tópico sobre como utilizar o controle explícito de
transações JTA por BMT (Bean Managed Transactions), utiliza o objeto UserTransacition.
Segue o link: http://www.tidicas.com.br/?p=319

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