Discussion :

[rajensias]

Bonjour ,

J'essaie d'implémenter PrimeFaces avec Tomahawk et myfaces pour générer des graphes ,or j'obtiens l'erreur suivante:

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16:33:30,691 ERROR _ErrorPageWriter:460 - An exception occurred
javax.faces.FacesException: Exception while calling encodeEnd on component : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /resultat.jsp][Class: org.primefaces.ui.component.chart.line.LineChart,Id: j_id_jsp_1205016988_1]}
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:627)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:261)
	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:257)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.actuallyRenderView(JspViewHandlerImpl.java:427)
	at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:383)
	at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:246)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:301)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
	at org.primefaces.ui.component.chart.line.LineChartRenderer.encodeLocalData(LineChartRenderer.java:68)
	at org.primefaces.ui.component.chart.line.LineChartRenderer.encodeChartScript(LineChartRenderer.java:48)
	at org.primefaces.ui.component.chart.BaseChartRenderer.encodeEnd(BaseChartRenderer.java:38)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:624)
	... 25 more

dans ma page jsf le chart est renvoyé comme suit

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<p:lineChart value="#{ChartDisplayBean.chart}" var="chart" xfield="#{Chart.year}">
             <p:chartSeries label="Avec Cas" value="#{Chart.acas}" />
             <p:chartSeries label="Sans Cas" value="#{Chart.scas}" />
     </p:lineChart>

voici mon web.xml

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Bdcenter</display-name>
  <welcome-file-list>
 
    <welcome-file>resultat.jsp</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
 
 
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>
  <servlet>
<servlet-name>Resource Servlet</servlet-name>
<servlet-class>org.primefaces.ui.resource.ResourceServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Resource Servlet</servlet-name>
<url-pattern>/primefaces_resources/*</url-pattern>
</servlet-mapping> 
  <filter>
	<filter-name>MyFacesExtensionsFilter</filter-name>
	<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
    <init-param>
        <param-name>uploadMaxFileSize</param-name>
        <param-value>20m</param-value>
         
    </init-param>
</filter>
 
 
<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
     
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
 
 
 
 
<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <url-pattern>/faces/myFacesExtensionResource/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <url-pattern>*.jsf</url-pattern>
</filter-mapping>
 
<context-param>
   <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
   <param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
 <param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.READONLY_AS_DISABLED_FOR_SELECTS</param-name>
 <param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.RENDER_VIEWSTATE_ID</param-name>
 <param-value>true</param-value>
</context-param>
 
<context-param>
<param-name>org.apache.myfaces.STRICT_XHTML_LINKS</param-name>
 <param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.CONFIG_REFRESH_PERIOD</param-name>
 <param-value>2</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
 <param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
 <param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.ADD_RESOURCE_CLASS</param-name>
 <param-value>org.apache.myfaces.renderkit.html.util.DefaultAddResource</param-value>
</context-param>
 
<context-param>
<param-name>org.apache.myfaces.RESOURCE_VIRTUAL_PATH</param-name>
 <param-value>/faces/myFacesExtensionResource</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.CHECK_EXTENSIONS_FILTER</param-name>
 <param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.RENDER_CLEAR_JAVASCRIPT_FOR_BUTTON</param-name>
 <param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.SAVE_FORM_SUBMIT_LINK_IE</param-name>
 <param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.VIEWSTATE_JAVASCRIPT</param-name>
 <param-value>false</param-value>
</context-param>
 
 
</web-app>

pouvez vous m'aider svp

merci d'avance