je veux afficher une Pie chart que j'ai trouvé sur le site de primefaces
dans mon pieChart.xhtml :
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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:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.prime.com.tr/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<ui:composition template="./layout/mainLayout.xhtml">
<ui:define name="title">Easy Testing BI </ui:define>
<ui:define name="content">
<p:panel header=" Pie Chart " id="select_panel" toggleable="true" toggleSpeed="500">
<h:form>
<div class="div_select_container">
<div style="float: left; width: 49%;">
<p:pieChart value="#{ChartBean.pieModel}" legendPosition="w"
title="Sample Pie Chart" style="width:400px;height:300px" />
<p:pieChart value="#{ChartBean.pieModel}" legendPosition="e" fill="false"
title="Custom Options" style="width:400px;height:300px" sliceMargin="5" diameter="150" />
</div>
<div style="float: left; width: 49%;">
</div>
</div>
<div class="spacer"/>
</h:form>
</p:panel>
</ui:define>
</ui:composition>
</h:body>
</html> |
dans la ChartBean:
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| /*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package csl;
/**
*
* @author Administrateur
*/
import java.io.Serializable;
import org.primefaces.model.chart.PieChartModel;
public class ChartBean implements Serializable {
private PieChartModel pieModel;
public ChartBean() {
createPieModel();
}
public PieChartModel getPieModel() {
return pieModel;
}
public void setPieModel(PieChartModel pieModel) {
this.pieModel = pieModel;
}
private void createPieModel() {
pieModel = new PieChartModel();
pieModel.set("Brand 1", 540);
pieModel.set("Brand 2", 325);
pieModel.set("Brand 3", 702);
pieModel.set("Brand 4", 421);
}
} |
et j'ai cette erreur :
java.lang.NullPointerException
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| java.lang.NullPointerException
at org.primefaces.component.chart.pie.PieChartRenderer.encodeData(PieChartRenderer.java:101)
at org.primefaces.component.chart.pie.PieChartRenderer.encodeScript(PieChartRenderer.java:67)
at org.primefaces.component.chart.pie.PieChartRenderer.encodeEnd(PieChartRenderer.java:42)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1763)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:55)
at org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:43)
at org.primefaces.component.panel.PanelRenderer.encodeContent(PanelRenderer.java:229)
at org.primefaces.component.panel.PanelRenderer.encodeMarkup(PanelRenderer.java:152)
at org.primefaces.component.panel.PanelRenderer.encodeEnd(PanelRenderer.java:75)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1763)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:401)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
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) |
Pouvez vous me dire SVP ce qui marche pas ?
PieChart erreur java.lang.NullPointerException
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