JPA - 1er formulaire

**staticx** · 07/02/2014, 23h47

Bonjour,

je suis tombé dans le bain de JPA et j'essaie de faire un formulaire pour ajouter des personnes des données dans la table "Personne".

j'ai ma page index.xhml suivante:

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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
    xmlns:p="http://primefaces.org/ui">                
    <h:head>
        <title><ui:insert name="title">Default Title</ui:insert></title>
        <h:outputStylesheet library="css" name="pfcrud.css"/>
        <h:outputScript library="scripts" name="pfcrud.js"/>
    </h:head>
 
    <body>             
        <p:growl id="growl" widgetVar="my_test" life="1000"/>            
        <!--            <p:layout fullPage="true"  >    -->            
            <h:form id="FormularioForm">
 
            <h:panelGroup id="display">
                <p:panelGrid columns="2" >
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_nombreReconoce}" for="nombreReconoce"  />
                    <p:inputText id="nombreReconoce" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="true" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_nombre}" for="nombre" />
                    <p:inputText id="nombre" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="false" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_appellido}" for="appellido" />
                    <p:inputText id="appellido" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="false" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_documentoIdentidad}" for="documentoIdentidad" />                                                
                    <p:selectOneMenu id="documentoIdentidad" value="#tipoIdentificacionController.selected}" >
 
                        <f:selectItems value="#{tipoIdentificacionController.items}"
                                       var="tipoIdentificacionItem"
                                       itemValue="#{tipoIdentificacionItem}"
                                       itemLabel="#{tipoIdentificacionItem.descripcionCorta.toString()}"
                                       />
<!--                        <f:converter binding="#{tipoIdentificacionConverter}"/>-->
 
                    </p:selectOneMenu>            
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_documentoIdentidadNumero}" for="documentoIdentidadNumero" />
                    <p:inputText id="documentoIdentidadNumero" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="true" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_sectorSocial}" for="lgbti" />
 
                    <p:selectOneMenu id="lgbti" value="#lgbtiController.selected}" >
                        <f:selectItem itemLabel="#{bundle.SelectOneMessage}"/>
                        <f:selectItems value="#{lgbtiController.items}"
                                       var="lgbtiItem"
                                       itemValue="#{lgbtiItem}"
                                       itemLabel="#{lgbtiItem.descripcion.toString()}"
                                       />
                        <f:converter binding="#{lgbtiConverter}"/>
 
                    </p:selectOneMenu>                                      
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_correoElectronico}" for="correoElectronico" />
                    <p:inputText id="correoElectronico" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="true" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_fechaNacimiento}" for="fechaNacimiento" />
                    <p:inputText id="fechaNacimiento" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="true" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_localidad}" for="localidad" />
                    <p:inputText id="localidad" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="true" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <p:outputLabel value="#{bundle.CreateVotanteLabel_telephono}" for="telefono" />
                    <p:inputText id="telefono" value="#{personaController.selected.persona}" title="#{bundle.CreatePersonaTitle_persona}" required="false" requiredMessage="#{bundle.CreatePersonaRequiredMessage_persona}"/>
 
                    <center>
                        <p:outputLabel value="#{bundle.CreateVotanteLabel_contacto}" />
                    </center>
 
                </p:panelGrid>
 
                <p:commandButton id="createButton" icon="ui-icon-plus"   value="#{bundle.Create}" action="#{personaController.prepareCreate2}"/>                                  
                <p:commandButton value="#{bundle.Cancel}" />
 
 
            </h:panelGroup>
 
        </h:form>
        <!--            </p:layout>-->
    </body>                
</html>

Ensuite, j'ai une méthode "prepareCreate2" qui va créer une nouvelle instance de Personne et de sauver en BD via la persistence et la méthode "saveNew".

Code :

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public T prepareCreate2(ActionEvent event) {
        T newItem;
        try {
            newItem = itemClass.newInstance();
            this.selected = newItem;
            initializeEmbeddableKey();
 
            String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Created");
            persist(AbstractController.PersistAction.CREATE, msg);
            if (!isValidationFailed()) 
            {
                items = null; // Invalidate list of items to trigger re-query.
            }
            saveNew(event);
 
            return newItem;
        } catch (InstantiationException ex) {
            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
        }
        return null;
    }

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public void saveNew(ActionEvent event) {
        String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Created");
        persist(AbstractController.PersistAction.CREATE, msg);
        if (!isValidationFailed()) {
            items = null; // Invalidate list of items to trigger re-query.
        }
    }

Le problème est que lorsque j'appuie sur le bouton "Create", j'obtiens l'erreur suivante:

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javax.el.PropertyNotFoundException: /Proyectos/Formulario/index.xhtml @23,227 value="#{personaController.selected.persona}": Target Unreachable, 'null' returned null
	at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
	at org.primefaces.util.ComponentUtils.getConverter(ComponentUtils.java:124)
	at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:183)
	at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1046)
	at javax.faces.component.UIInput.validate(UIInput.java:976)
	at javax.faces.component.UIInput.executeValidate(UIInput.java:1249)
	at javax.faces.component.UIInput.processValidators(UIInput.java:712)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
	at javax.faces.component.UIForm.processValidators(UIForm.java:253)
	at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
	at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1195)
	at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
	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:646)
	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:357)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
	at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
	at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
	at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
	at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
	at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
	at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
	at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
	at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
	at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
	at java.lang.Thread.run(Thread.java:722)
Caused by: javax.el.PropertyNotFoundException: Target Unreachable, 'null' returned null
	at com.sun.el.parser.AstValue.getTarget(AstValue.java:192)
	at com.sun.el.parser.AstValue.getType(AstValue.java:86)
	at com.sun.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:201)
	at org.jboss.weld.el.WeldValueExpression.getType(WeldValueExpression.java:93)
	at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:98)

je comprends bien que l'instance Personne est nulle mais comment je fais si je veux l'instancier dans ma méthode "prepareCreate2" ???

Toutes les suggestions sont les bienvenues

**jeffray03** · 10/02/2014, 16h38

peux-tu nous montrer comment est ce que tu as defini ta classe: PersonaController

Merci

**staticx** · 10/02/2014, 16h46

voila la classe personaController

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@ManagedBean(name = "personaController")
@SessionScoped
public class PersonaController extends AbstractController<Persona> implements Serializable {
 
    @EJB
    private PersonaFacade ejbFacade;
 
    public PersonaController() {
        super(Persona.class);
    }
 
    @PostConstruct
    public void init() {
        super.setFacade(ejbFacade);
    }

et la classe "maître" AbstractController

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public abstract class AbstractController<T> {
 
    private AbstractFacade<T> ejbFacade;
    private Class<T> itemClass;
    private T selected;
    private List<T> items;
 
    private enum PersistAction {
 
        CREATE,
        DELETE,
        UPDATE
    }
 
    public AbstractController() {
    }
 
    public AbstractController(Class<T> itemClass) {
        this.itemClass = itemClass;
    }
 
    protected AbstractFacade<T> getFacade() {
        return ejbFacade;
    }
 
    protected void setFacade(AbstractFacade<T> ejbFacade) {
        this.ejbFacade = ejbFacade;
    }
 
    public T getSelected() 
    {
        if (selected == null)
        {
            try{
            T newItem;
            newItem = itemClass.newInstance();
            selected = newItem;
            }
            catch (InstantiationException ex) 
            {
                 Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
            } catch (IllegalAccessException ex) 
            {
                Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
            }            
        }           
        return selected;
    }
 
    public void setSelected(T selected) {
        this.selected = selected;
    }
 
    protected void setEmbeddableKeys() {
        // Nothing to do if entity does not have any embeddable key.
    }
 
    ;
 
    protected void initializeEmbeddableKey() {
        // Nothing to do if entity does not have any embeddable key.
    }
 
    /**
     * Returns all items in a List object
     *
     * @return
     */
    public List<T> getItems() {
        if (items == null) {
            items = this.ejbFacade.findAll();
        }
        return items;
    }
 
    public void setItems(List<T> items) {
        this.items = items;
    }
 
    public void save(ActionEvent event) {
        String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Updated");
        persist(AbstractController.PersistAction.UPDATE, msg);
    }
 
    public void saveNew(ActionEvent event) {
        String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Created");
        persist(AbstractController.PersistAction.CREATE, msg);
        if (!isValidationFailed()) {
            items = null; // Invalidate list of items to trigger re-query.
        }
    }
 
    public void delete(ActionEvent event) {
        String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Deleted");
        persist(AbstractController.PersistAction.DELETE, msg);
        if (!isValidationFailed()) {
            selected = null; // Remove selection
            items = null; // Invalidate list of items to trigger re-query.
        }
    }
 
    private void persist(AbstractController.PersistAction persistAction, String successMessage) {
        if (selected != null) {
            this.setEmbeddableKeys();
            try {
                if (persistAction != AbstractController.PersistAction.DELETE) {
                    this.ejbFacade.edit(selected);
                } else {
                    this.ejbFacade.remove(selected);
                }
                JsfUtil.addSuccessMessage(successMessage);
            } catch (EJBException ex) {
                String msg = "";
                Throwable cause = JsfUtil.getRootCause(ex.getCause());
                if (cause != null) {
                    msg = cause.getLocalizedMessage();
                }
                if (msg.length() > 0) {
                    JsfUtil.addErrorMessage(msg);
                } else {
                    JsfUtil.addErrorMessage(ex, ResourceBundle.getBundle("/Bundle").getString("PersistenceErrorOccured"));
                }
            } catch (Exception ex) {
                Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
                JsfUtil.addErrorMessage(ex, ResourceBundle.getBundle("/Bundle").getString("PersistenceErrorOccured"));
            }
        }
    }
 
    /**
     * Creates a new instance of an underlying entity and assigns it to Selected
     * property.
     *
     * @return
     */
    public T prepareCreate(ActionEvent event) {
        T newItem;
        try {
            newItem = itemClass.newInstance();
            this.selected = newItem;
            initializeEmbeddableKey();
            return newItem;
        } catch (InstantiationException ex) {
            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
        }
        return null;
    }
 
    public T prepareCreate2(ActionEvent event) {
//        T newItem;
//        try {                        
//            newItem = itemClass.newInstance();
//            this.selected = newItem;
            initializeEmbeddableKey();
 
            String msg = ResourceBundle.getBundle("/Bundle").getString(itemClass.getSimpleName() + "Created");
            persist(AbstractController.PersistAction.CREATE, msg);
            if (!isValidationFailed()) 
            {
                items = null; // Invalidate list of items to trigger re-query.
            }
            saveNew(event);
 
            return selected;
//        } catch (InstantiationException ex) {
//            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
//        } catch (IllegalAccessException ex) {
//            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
//        }
//        return null;
    }
 
    public boolean isValidationFailed() {
        return JsfUtil.isValidationFailed();
    }

et la "facade" pour personne

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@Stateless
public class PersonaFacade extends AbstractFacade<Persona> {
    @PersistenceContext(unitName = "ProyectosPU")
    private EntityManager em;
    private PersonaFacade ejbFacade;
    private DependenciaFuncionarioController dependenciaFuncionarioController;
   // @Inject
   // private transient Logger logger;
    private String login = null;
    private String password = null;
    private Persona persona = new Persona();
    private List<Persona> listaPersona;
    private List<DependenciaFuncionario> listaDependenciaFuncionario;
    private List<Menu> listaMenuPersona;
    private DependenciaFuncionario dependenciaFuncionario;
    private DependenciaFuncionario GmDependenciaFuncionario;
    private List<Menu> GmListaMenuPersona;
    private List<Menu> GmListaMenu;
    private List<Menu> listaMenu;  
 
    @Override
    protected EntityManager getEntityManager() {
        return em;
    }
 
    public PersonaFacade() {
        super(Persona.class);
    }
 
    public List<Menu> listaMenuPersona(Persona persona) {
        listaMenuPersona =  new  ArrayList<Menu>();
        Query query = em.createQuery("SELECT m FROM Menu m WHERE exists (SELECT mr.menu FROM MenuRol mr, PersonaRol pr WHERE mr.menu = m AND mr.rol = pr.rol AND pr.persona = :parametroPersona) ");
        query.setParameter("parametroPersona", persona); 
        listaMenuPersona = query.getResultList(); 
        return listaMenuPersona;
    }    
 
    public List<Menu> listaMenu() {
        listaMenu =  new  ArrayList<Menu>();
        Query query = em.createQuery("SELECT m FROM Menu m ");
        listaMenu = query.getResultList(); 
        return listaMenu;
    }    
 
    public DependenciaFuncionario dependenciaFuncionario(Persona persona) {
        DependenciaFuncionario dependenciaFuncionario;
        Query query = em.createQuery("SELECT df FROM DependenciaFuncionario df WHERE df.fechaSalida IS NULL AND df.persona = :parametroPersona ");
        query.setParameter("parametroPersona", persona); 
        dependenciaFuncionario = (DependenciaFuncionario)query.getSingleResult(); 
        return dependenciaFuncionario;
    }    
 
    public List<Menu> getListaMenu() {
        return listaMenu;
    }
 
    public void setListaMenu(List<Menu> listaMenu) {
        this.listaMenu = listaMenu;
    }
 
}

**jeffray03** · 11/02/2014, 14h31

Code :

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personaController.selected

mais selected est du type Persona ou bien?
alors pourquoi fais-tu :

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personaController.selected.persona

?

essaies de rectifier cela.
soit tu fais:

Code :

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personaController.selected.(propriete de la classe persona)

Eric

JPA - 1er formulaire

JPA Java

Vue hybride

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