[PRIME FACES 4.0] Affichage de données dans un donut

Version imprimable

Bonjour à tous,

Pour mon projet de fin d'études je dois réaliser un application web en java.
Je souhaiterais pouvoir afficher en temps réel des données enregistrées dans une base de donnée dans un chart PrimeFaces de type Donut.
Ces données sont des mesures envoyées par des capteurs. J'ai donc une table mesure qui comprend plusieurs colonnes comme power, cadence ect...

J'arrive à afficher sans problème la liste des ces données dans un tableau et à récupérer la dernière valeur de power (par exemple) dans une page web. Cependant je n'arrive pas à l'afficher dans un donut.

Voici la classe Mesure:

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.biris.classes;
 
import java.io.Serializable;
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.xml.bind.annotation.XmlRootElement;
 
/**
 * 
 *
 * @author Billy
 */
@Entity
public class Mesure implements Serializable {
 
    @ManyToOne(cascade = CascadeType.REFRESH)
    Personne personne;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long idMesure;
    private float cadence;
    private float power;
    private float distance;
    private float speed;
    private float heartrate;
 
    public Personne getPersonne() {
        return personne;
    }
 
    public void setPersonne(Personne personne) {
        this.personne = personne;
    }
 
    public long getIdMesure() {
        return idMesure;
    }
 
    public void setIdMesure(long idMesure) {
        this.idMesure = idMesure;
    }
 
    public float getCadence() {
        return cadence;
    }
 
    public void setCadence(float cadence) {
        this.cadence = cadence;
    }
 
    public float getPower() {
        return power;
    }
 
    public void setPower(float power) {
        this.power = power;
    }
 
    public float getDistance() {
        return distance;
    }
 
    public void setDistance(float distance) {
        this.distance = distance;
    }
 
    public float getSpeed() {
        return speed;
    }
 
    public void setSpeed(float speed) {
        this.speed = speed;
    }
 
    public float getHeartrate() {
        return heartrate;
    }
 
    public void setHeartrate(float heartrate) {
        this.heartrate = heartrate;
    }
 
    public Date getDateMesure() {
        return dateMesure;
    }
 
    public void setDateMesure(Date dateMesure) {
        this.dateMesure = dateMesure;
    }
 
    @Temporal(TemporalType.DATE)
    private Date dateMesure = new Date();
 
}

Le Bean ChartBean:

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.biris.controleur;

import org.primefaces.model.chart.DonutChartModel;
import com.biris.classes.Mesure;
import java.io.Serializable;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.UserTransaction;

@Named
@RequestScoped
public class ChartBean implements Serializable {

    private List<Mesure> listeMesures;
    private List<Mesure> listeMesuresPower;
    private DonutChartModel donutModel;
    private Mesure m = new Mesure();
    @PersistenceContext
    private EntityManager em;
    @Resource
    private UserTransaction mtx;
    
    private float power;

    public ChartBean() {
        createDonutModel();
    }

    public List<Mesure> getListeMesures() {
        this.listerMesures();
        return listeMesures;
    }

    public void setListeMesures(List<Mesure> listeMesures) {
        this.listeMesures = listeMesures;
    }

    public List<Mesure> listerMesures() {
        if (listeMesures == null || listeMesures.isEmpty()) {
            this.listeMesures = em.createQuery("SELECT m FROM Mesure m").getResultList();
        }
        return listeMesures;
    }

    public List<Mesure> getListeMesuresPower() {
        this.listerMesuresPower();
        return listeMesuresPower;
    }

    public void setListeMesuresPower(List<Mesure> listeMesuresPower) {
        this.listeMesuresPower = listeMesuresPower;
    }

    //Récupère la dernière valeur de Power//////////////
    public float listerMesuresPower() {
        if (listeMesuresPower == null || listeMesuresPower.isEmpty()) {
            this.listeMesuresPower = em.createQuery("SELECT m FROM Mesure m").getResultList();
            int a = listeMesuresPower.size() - 1;
            m = listeMesuresPower.get(a);
            power = m.getPower();
        }
        return power;
    }
    //Donut////////////////////////////////////////////////

    public DonutChartModel getDonutModel() {
        return donutModel;
    }

    public void createDonutModel() {

        donutModel = new DonutChartModel();
        Map<String, Number> circle1 = new LinkedHashMap<String, Number>();

        // Le problème se trouve ici, lorsque j'appel la méthode listerMesuresPower() comme ceci " circle1.put("Power", listerMesuresPower()); " , j'ai le droit à un java null pointer exception dont le log est en bas du message
        circle1.put("Power", 45);
        circle1.put("Brand 2", 10);
        donutModel.addCircle(circle1);
    }
}

Et enfin la page jsf:

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<!--
To change this template, choose Tools | Templates
and open the template in the editor.
-->
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://xmlns.jcp.org/jsf/core"
      xmlns:p="http://primefaces.org/ui">
    <h:head>
        <title>Entrainement libre</title>
    </h:head>
    <h:body> 
 
        <p:growl sticky="3000"/>
        <h:form> 
 
           <p:dataTable value="#{chartBean.listeMesures}" var="m" paginator="true" rows="10" id="listeMesures2">
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.power}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.cadence}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.distance}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.heartrate}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.speed}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.idMesure}"/>
                </p:column>
                <p:column sortBy="#{m.dateMesure}">
                    <h:outputText value="#{m.personne.idPersonne}"/>
                </p:column>
            </p:dataTable>
 
            <p:donutChart id="sample" value="#{chartBean.donutModel}" legendPosition="w"  
                          title="Sample Donut Chart" style="width:400px;height:300px" />  
            <h:outputText value="#{chartBean.listerMesuresPower()}"/>
 
        </h:form>  
    </h:body>
</html>

Log du server

Code:

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Infos:   Loading application [AntPlus] at [/AntPlus]
Grave:   Error Rendering View[/Coureur/EntrainementCoureurLibre.xhtml]
com.google.common.collect.ComputationException: java.lang.NullPointerException
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:400)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.getClientProxy(ClientProxyProvider.java:163)
	at org.jboss.weld.el.AbstractWeldELResolver.lookup(AbstractWeldELResolver.java:115)
	at org.jboss.weld.el.AbstractWeldELResolver.getValue(AbstractWeldELResolver.java:96)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:188)
	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
	at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
	at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
	at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
	at javax.faces.component.UIData.getValue(UIData.java:732)
	at org.primefaces.component.datatable.DataTable.getValue(DataTable.java:910)
	at org.primefaces.component.api.UIData.getDataModel(UIData.java:615)
	at javax.faces.component.UIData.getRowCount(UIData.java:356)
	at org.primefaces.component.api.UIData.calculateFirst(UIData.java:161)
	at org.primefaces.component.datatable.DataTableRenderer.preEncode(DataTableRenderer.java:107)
	at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:81)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
	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:744)
Caused by: java.lang.NullPointerException
	at com.biris.controleur.ChartBean.listerMesuresPower(ChartBean.java:67)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.listerMesuresPower(Unknown Source)
	at com.biris.controleur.ChartBean.createDonutModel(ChartBean.java:84)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.createDonutModel(Unknown Source)
	at com.biris.controleur.ChartBean.<init>(ChartBean.java:36)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.<init>(Unknown Source)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at org.jboss.weld.security.NewInstanceAction.run(NewInstanceAction.java:33)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:262)
	at org.jboss.weld.bean.proxy.ClientProxyFactory.create(ClientProxyFactory.java:103)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:157)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:147)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.access$000(ClientProxyProvider.java:49)
	at org.jboss.weld.bean.proxy.ClientProxyProvider$1.apply(ClientProxyProvider.java:57)
	at org.jboss.weld.bean.proxy.ClientProxyProvider$1.apply(ClientProxyProvider.java:53)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:358)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153)
	at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:396)
	... 62 more
 
FATAL:   JSF1073 : com.google.common.collect.ComputationException intercepté durant le traitement de RENDER_RESPONSE 6 : UIComponent-ClientId=, Message=java.lang.NullPointerException
FATAL:   java.lang.NullPointerException
com.google.common.collect.ComputationException: java.lang.NullPointerException
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:400)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.getClientProxy(ClientProxyProvider.java:163)
	at org.jboss.weld.el.AbstractWeldELResolver.lookup(AbstractWeldELResolver.java:115)
	at org.jboss.weld.el.AbstractWeldELResolver.getValue(AbstractWeldELResolver.java:96)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:188)
	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
	at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
	at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
	at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
	at javax.faces.component.UIData.getValue(UIData.java:732)
	at org.primefaces.component.datatable.DataTable.getValue(DataTable.java:910)
	at org.primefaces.component.api.UIData.getDataModel(UIData.java:615)
	at javax.faces.component.UIData.getRowCount(UIData.java:356)
	at org.primefaces.component.api.UIData.calculateFirst(UIData.java:161)
	at org.primefaces.component.datatable.DataTableRenderer.preEncode(DataTableRenderer.java:107)
	at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:81)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
	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:744)
Caused by: java.lang.NullPointerException
	at com.biris.controleur.ChartBean.listerMesuresPower(ChartBean.java:67)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.listerMesuresPower(Unknown Source)
	at com.biris.controleur.ChartBean.createDonutModel(ChartBean.java:84)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.createDonutModel(Unknown Source)
	at com.biris.controleur.ChartBean.<init>(ChartBean.java:36)
	at com.biris.controleur.ChartBean$Proxy$_$$_WeldClientProxy.<init>(Unknown Source)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at org.jboss.weld.security.NewInstanceAction.run(NewInstanceAction.java:33)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:262)
	at org.jboss.weld.bean.proxy.ClientProxyFactory.create(ClientProxyFactory.java:103)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:157)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:147)
	at org.jboss.weld.bean.proxy.ClientProxyProvider.access$000(ClientProxyProvider.java:49)
	at org.jboss.weld.bean.proxy.ClientProxyProvider$1.apply(ClientProxyProvider.java:57)
	at org.jboss.weld.bean.proxy.ClientProxyProvider$1.apply(ClientProxyProvider.java:53)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:358)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153)
	at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69)
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:396)
	... 62 more

Avez-vous une solution car je vous avouerais que je suis bloqué depuis quelques jours déjà :(

09/04/2014, 09h38
OButterlin
Comme la NullPointerException fait référence à la ligne 67
Code:

1 2 this.listeMesuresPower = em.createQuery("SELECT m FROM Mesure m").getResultList();
je pencherais pour un problème d'injection de l'entityManager... peux-tu vérifier (par debug) ?
09/04/2014, 12h43
B.Berthod

Effectivement avec un point d'arrêt sur la ligne 67, l'entityManager est null. Il ne récupère rien.

Aurait-tu une idée?
09/04/2014, 13h32
OButterlin

Citation:

Envoyé par B.Berthod

Aurait-tu une idée?

Oui... c'est dingue non ? :mouarf:

Il y a un détail dans le bean qui me semble "louche", tu utilises une annotation@Named, tu devrais utiliser @ManagedBean

J'ai donc changé le @Named par un @ManagedBean.
Mais maintenant j'ai le droit à un "Impossible d’instancier la classe «com.biris.controleur.ChartBean»"

Log:

Code:

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Grave:   Error Rendering View[/Coureur/EntrainementCoureurLibre.xhtml]
com.sun.faces.mgbean.ManagedBeanCreationException: Impossible d’instancier la classe «com.biris.controleur.ChartBean».
	at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:191)
	at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:100)
	at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
	at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
	at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244)
	at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116)
	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
	at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
	at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
	at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
	at javax.faces.component.UIData.getValue(UIData.java:732)
	at org.primefaces.component.datatable.DataTable.getValue(DataTable.java:910)
	at org.primefaces.component.api.UIData.getDataModel(UIData.java:615)
	at javax.faces.component.UIData.getRowCount(UIData.java:356)
	at org.primefaces.component.api.UIData.calculateFirst(UIData.java:161)
	at org.primefaces.component.datatable.DataTableRenderer.preEncode(DataTableRenderer.java:107)
	at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:81)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
	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:744)
Caused by: java.lang.NullPointerException
	at com.biris.controleur.ChartBean.listerMesuresPower(ChartBean.java:67)
	at com.biris.controleur.ChartBean.createDonutModel(ChartBean.java:84)
	at com.biris.controleur.ChartBean.<init>(ChartBean.java:36)
	at sun.reflect.GeneratedConstructorAccessor224.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:186)
	... 63 more
 
FATAL:   JSF1073 : com.sun.faces.mgbean.ManagedBeanCreationException intercepté durant le traitement de RENDER_RESPONSE 6 : UIComponent-ClientId=, Message=Impossible d’instancier la classe «com.biris.controleur.ChartBean».
FATAL:   Impossible d’instancier la classe «com.biris.controleur.ChartBean».
com.sun.faces.mgbean.ManagedBeanCreationException: Impossible d’instancier la classe «com.biris.controleur.ChartBean».
	at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:191)
	at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:100)
	at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
	at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
	at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244)
	at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116)
	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116)
	at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
	at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
	at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
	at javax.faces.component.UIData.getValue(UIData.java:732)
	at org.primefaces.component.datatable.DataTable.getValue(DataTable.java:910)
	at org.primefaces.component.api.UIData.getDataModel(UIData.java:615)
	at javax.faces.component.UIData.getRowCount(UIData.java:356)
	at org.primefaces.component.api.UIData.calculateFirst(UIData.java:161)
	at org.primefaces.component.datatable.DataTableRenderer.preEncode(DataTableRenderer.java:107)
	at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:81)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
	at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
	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:744)
Caused by: java.lang.NullPointerException
	at com.biris.controleur.ChartBean.listerMesuresPower(ChartBean.java:67)
	at com.biris.controleur.ChartBean.createDonutModel(ChartBean.java:84)
	at com.biris.controleur.ChartBean.<init>(ChartBean.java:36)
	at sun.reflect.GeneratedConstructorAccessor224.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:186)
	... 63 more

09/04/2014, 14h43
Alkhan

bonjour,

entityManager est toujours null !
As tu bien définis l'unité de persistance dans le persitance.xml ?

Voilà mon fichier persitence.xml:
Code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="AntPlusPU" transaction-type="JTA"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <jta-data-source>jdbc_antPlusPool</jta-data-source> <class>com.biris.classes.Coureur</class> <class>com.biris.classes.Entraineur</class> <class>com.biris.classes.Personne</class> <class>com.biris.classes.Adresse</class> <class>com.biris.classes.Mesure</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="eclipselink.ddl-generation" value="create-tables"/> </properties> </persistence-unit> </persistence>
Je ne pense pas que le problème vienne de la persistance puisque ma méthode listerMesures() arrive à me récupérer les mesures stockées dans ma base que j'affiche dans un datatable.
Et lorsque j'appel la méthode <h:outputText value="#{chartBean.listerMesuresPower()}"/> dans ma page jsf, j'arrive à récupérer power, c'est à dire la dernière valeur de ma liste de mesures.power.
Est-ce que mon problème ne viendrait pas des types de la méthode listerMesuresPower()? Entre le type float et le type liste?

09/04/2014, 16h17
OButterlin

Je suppose que ton autre Bean fait référence au premier...
Pour CDI + @PersistenceContext, j'ai lu ici qu'il y avait un problème et il propose une solution... à toi de tester ;)