Exception "java.lang.NullPointerException"

**lamia89** · 09/05/2012, 17h20

Bonjour,

Je suis entrain de développez une application en JEE sous Hibernate , Spring , JSF primefaces mais lors de l’exécution j'obtient l’exception suivante:

Code :

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GRAVE: "Servlet.service()" pour la servlet jsp a lancé une exception
java.lang.NullPointerException
	at ma.it.bean.NewsBean.init(NewsBean.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1329)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:471)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302)
	at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
	at org.springframework.web.context.request.SessionScope.get(SessionScope.java:90)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
	at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.java:58)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
	at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:198)
	at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:215)
	at javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:454)
	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:635)
	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1033)
	at org.apache.jsp.Views.News_jsp._jspx_meth_p_005fdataTable_005f0(News_jsp.java:210)
	at org.apache.jsp.Views.News_jsp._jspx_meth_h_005fform_005f0(News_jsp.java:170)
	at org.apache.jsp.Views.News_jsp._jspx_meth_f_005fview_005f0(News_jsp.java:125)
	at org.apache.jsp.Views.News_jsp._jspService(News_jsp.java:88)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	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:127)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
9 mai 2012 16:17:00 com.sun.faces.lifecycle.LifecycleImpl phase
ATTENTION: executePhase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@1bef4c6) threw exception
javax.faces.FacesException: org.apache.jasper.JasperException: An exception occurred processing JSP page /Views/News.jsp at line 15
 
12: <body>
13: 	<f:view>
14: 		<h:form prependId="false">
15: 			<p:dataTable id="basic" var="News" binding="#{NewsBean.newsTable}"
16: 				value="#{NewsBean.newsList}">
17: 				<p:column id="modelHeader">
18: 					<f:facet name="idNews">  
 
 
Stacktrace:
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:419)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	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:127)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: An exception occurred processing JSP page /Views/News.jsp at line 15
 
12: <body>
13: 	<f:view>
14: 		<h:form prependId="false">
15: 			<p:dataTable id="basic" var="News" binding="#{NewsBean.newsTable}"
16: 				value="#{NewsBean.newsList}">
17: 				<p:column id="modelHeader">
18: 					<f:facet name="idNews">  
 
 
Stacktrace:
	at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:521)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
	... 18 more
Caused by: javax.faces.FacesException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:209)
	at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:215)
	at javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:454)
	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:635)
	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1033)
	at org.apache.jsp.Views.News_jsp._jspx_meth_p_005fdataTable_005f0(News_jsp.java:210)
	at org.apache.jsp.Views.News_jsp._jspx_meth_h_005fform_005f0(News_jsp.java:170)
	at org.apache.jsp.Views.News_jsp._jspx_meth_f_005fview_005f0(News_jsp.java:125)
	at org.apache.jsp.Views.News_jsp._jspService(News_jsp.java:88)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	... 28 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:147)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1329)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:471)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302)
	at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
	at org.springframework.web.context.request.SessionScope.get(SessionScope.java:90)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
	at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.java:58)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
	at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:198)
	... 39 more
Caused by: java.lang.NullPointerException
	at ma.it.bean.NewsBean.init(NewsBean.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
	... 60 more
9 mai 2012 16:17:00 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: "Servlet.service()" pour la servlet Faces Servlet a généré une exception
java.lang.NullPointerException
	at ma.it.bean.NewsBean.init(NewsBean.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1329)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:471)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302)
	at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
	at org.springframework.web.context.request.SessionScope.get(SessionScope.java:90)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
	at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.java:58)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
	at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:198)
	at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:215)
	at javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:454)
	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:635)
	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1033)
	at org.apache.jsp.Views.News_jsp._jspx_meth_p_005fdataTable_005f0(News_jsp.java:210)
	at org.apache.jsp.Views.News_jsp._jspx_meth_h_005fform_005f0(News_jsp.java:170)
	at org.apache.jsp.Views.News_jsp._jspx_meth_f_005fview_005f0(News_jsp.java:125)
	at org.apache.jsp.Views.News_jsp._jspService(News_jsp.java:88)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	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:127)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)

Voici le code de ma classe News.java

Code :

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package ma.it.model;
 
// Generated 7 mai 2012 12:58:17 by Hibernate Tools 3.4.0.CR1
 
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.IDENTITY;
import javax.persistence.Id;
import javax.persistence.Table;
/**
 * News generated by hbm2java
 */
@Entity
@Table(name = "news", catalog = "bdd_itrekrute")
public class News implements java.io.Serializable {
 
	private Integer idNews;
	private String titre;
	private String description;
 
	public News() {
	}
 
	public News(String titre, String description) {
		this.titre = titre;
		this.description = description;
	}
 
	@Id
	@GeneratedValue(strategy = IDENTITY)
	@Column(name = "idNews", unique = true, nullable = false)
	public Integer getIdNews() {
		return this.idNews;
	}
 
	public void setIdNews(Integer idNews) {
		this.idNews = idNews;
	}
 
	@Column(name = "titre")
	public String getTitre() {
		return this.titre;
	}
 
	public void setTitre(String titre) {
		this.titre = titre;
	}
 
	@Column(name = "description")
	public String getDescription() {
		return this.description;
	}
 
	public void setDescription(String description) {
		this.description = description;
	}
	@Override
	public String toString() 
	{
		return "id "+ this.idNews +" titre : "+this.titre+" description "+this.description;
	}
 
}

ci-dessous le code de la page NewsBean.java :

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package ma.it.bean;
 
import java.io.*;
import java.util.List;
 
import javax.annotation.PostConstruct;
 
import ma.it.service.NewsService;
import ma.it.model.News;
 
import org.primefaces.component.datatable.DataTable;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
 
 
@Component("NewsBean")
@Scope("session")
public class NewsBean implements Serializable{
	private transient NewsService newsService;
	private transient DataTable NewsTable;
	private List<News> NewsList;
 
	@PostConstruct
	public void init() {
		this.NewsList=this.newsService.findAll();
	}
	public DataTable getNewsTable() {
		return NewsTable;
	}
 
	public void setNewsTable(DataTable newsTable) {
		this.NewsTable = newsTable;
	}
	public List<News> getNewsList() {
		return NewsList;
	}
	public void setNewsList(List<News> newsList) {
		this.NewsList = newsList;
	}
 
	}

Et finalement , voici le code de la page News.jsp :

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<%@ page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://primefaces.prime.com.tr/ui" prefix="p"%>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<f:view>
		<h:form prependId="false">
			<p:dataTable id="basic" var="News" binding="#{NewsBean.newsTable}"
				value="#{NewsBean.newsList}">
				<p:column id="modelHeader">
					<f:facet name="idNews">  
                    idNews 
            </f:facet>
					<h:outputText value="#{News.idNews}" />
				</p:column>
 
				<p:column>
					<f:facet name="titre">  
                    Titre  
            </f:facet>
					<h:outputText value="#{News.titre}" />
				</p:column>
 
			</p:dataTable>
		</h:form>
 
	</f:view>
</body>
</html>

Est ce quelqu'un a une idée sur la solution de cet erreur ????

**Mathieu.J** · 09/05/2012, 17h37

Ta variable this.newsService n'est pas initialisée.

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public class NewsBean implements Serializable{
	private transient NewsService newsService;
	private transient DataTable NewsTable;
	private List<News> NewsList;
 
	@PostConstruct
	public void init() {
		this.NewsList=this.newsService.findAll(); // newsService non initialisé
	}

Au passage, en général en java, on ne commence pas le nom d'une variable par une majuscule : NewsTable => newsTable

**lamia89** · 09/05/2012, 21h28

Merci de votre réponse , mais ça ne marche toujours pas , j'ai toujours la même exception que ce soit avec ou sans instanciation de l'objet newsListe sinon est ce que vous pouvez me valider la requête HQL de sélection parce que je débute avec hibernate :

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return sessionFactory.getCurrentSession().createQuery(" from  News news").list();

**Mathieu.J** · 10/05/2012, 10h22

Envoyé par lamia89

ça ne marche toujours pas , j'ai toujours la même exception que ce soit avec ou sans instanciation de l'objet newsListe

Normal vu que c'est newsService et non newsListequi n'est pas instancié.

**lamia89** · 10/05/2012, 10h28

Envoyé par Mathieu.J

Normal vu que c'est newsService et non newsListequi n'est pas instancié.

même si j'anstancie NewsService l'exception est levée , sachant que j'ai effectué un test sur la fonction findAll() en utilisant JUnit et la requête HQL est juste il me retourne tous les objets News.

**Mathieu.J** · 10/05/2012, 11h06

Es-tu certain que la stacktrace est identique après avoir instancié ton service ?
Même type d'exception ne signifie pas même exception

**Mathieu.J** · 10/05/2012, 11h09

Sinon pour ta requête essaye :

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return sessionFactory.getCurrentSession().createQuery("select OBJECT(news)  from  News news").list();

**lamia89** · 10/05/2012, 12h57

j'ai modifié la requête et voilà l'exception :

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com.sun.faces.lifecycle.LifecycleImpl phase
ATTENTION: executePhase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@4ee1f1) threw exception
javax.faces.FacesException: org.apache.jasper.JasperException: javax.faces.FacesException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:419)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	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:127)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: javax.faces.FacesException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
	... 18 more
Caused by: javax.faces.FacesException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:209)
	at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:215)
	at javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:454)
	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:635)
	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1033)
	at org.apache.jsp.Views.News_jsp._jspx_meth_p_005fdataTable_005f0(News_jsp.java:210)
	at org.apache.jsp.Views.News_jsp._jspx_meth_h_005fform_005f0(News_jsp.java:170)
	at org.apache.jsp.Views.News_jsp._jspx_meth_f_005fview_005f0(News_jsp.java:125)
	at org.apache.jsp.Views.News_jsp._jspService(News_jsp.java:88)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	... 28 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NewsBean': Invocation of init method failed; nested exception is java.lang.NullPointerException
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:147)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1329)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:471)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302)
	at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
	at org.springframework.web.context.request.SessionScope.get(SessionScope.java:90)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
	at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.java:58)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
	at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:198)
	... 39 more
Caused by: java.lang.NullPointerException
	at ma.it.service.NewsService.findAll(NewsService.java:26)
	at ma.it.bean.NewsBean.init(NewsBean.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
	... 60 more
10 mai 2012 11:57:02 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: "Servlet.service()" pour la servlet Faces Servlet a généré une exception
java.lang.NullPointerException
	at ma.it.service.NewsService.findAll(NewsService.java:26)
	at ma.it.bean.NewsBean.init(NewsBean.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1329)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:471)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:302)
	at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
	at org.springframework.web.context.request.SessionScope.get(SessionScope.java:90)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
	at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.java:58)
	at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
	at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
	at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:69)
	at org.apache.el.parser.AstValue.getValue(AstValue.java:112)
	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
	at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:101)
	at com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:198)
	at javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:215)
	at javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:454)
	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:635)
	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1033)
	at org.apache.jsp.Views.News_jsp._jspx_meth_p_005fdataTable_005f0(News_jsp.java:210)
	at org.apache.jsp.Views.News_jsp._jspx_meth_h_005fform_005f0(News_jsp.java:170)
	at org.apache.jsp.Views.News_jsp._jspx_meth_f_005fview_005f0(News_jsp.java:125)
	at org.apache.jsp.Views.News_jsp._jspService(News_jsp.java:88)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
	at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
	at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	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:127)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)

**lamia89** · 10/05/2012, 13h19

vous pensez que cet exception peut être dû à une erreur de configuration de l'un des fichiers web.xml ou faces-config.xml ou applicationContext??!

**Mathieu.J** · 10/05/2012, 14h25

Il y a bien un changement d'exception.

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java.lang.NullPointerException
	at ma.it.bean.NewsBean.init(NewsBean.java:25)

Maintenant tu as

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Caused by: java.lang.NullPointerException
	at ma.it.service.NewsService.findAll(NewsService.java:26)

Il nous faudrait le code de ton service.
Mais à vu de nez, je pencherai pour sessionFactory qui serait NULL, ou sessionFactory.getCurrentSession() qui retourne NULL.

**lamia89** · 10/05/2012, 23h10

Re-bonjour ,

voici le code de la classe NewsService :

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package ma.it.service;
 
import java.util.List;
 
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
 
import ma.it.model.News;
 
@Service("NewsService")
@Transactional
public class NewsService {
 
	@Autowired
	private SessionFactory sessionFactory;
 
	@SuppressWarnings("unchecked")
	public List<News> findAll()// throws Exception
	{
		return sessionFactory.getCurrentSession().createQuery("from  ma.it.model.News").list();
	}
 
	public News findById(Integer id)
	{
		return (News) sessionFactory.getCurrentSession().get(News.class,id);
	}
 
	public void save(News n)
	{
		sessionFactory.getCurrentSession().saveOrUpdate(n);
	}
 
 
}

**Mathieu.J** · 11/05/2012, 09h06

Vérifie ces 2 points :

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sessionFactory qui serait NULL, ou sessionFactory.getCurrentSession() qui retourne NULL.

Et si c'est l'un des deux, tu dois avoir un problème de config Spring. Mais là j'y connais rien

**fxrobin** · 11/05/2012, 09h59

Cette injection

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@Autowired
private SessionFactory sessionFactory;

ne doit pas fonctionner.

Montre ta classe "SessionFactory" et le fichier "applicationContext.xml" de Spring.

**lamia89** · 11/05/2012, 16h07

"applicationContext.xml" de Spring :

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
 
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" >
     <property name="driverClassName" value="org.gjt.mm.mysql.Driver" />
     <property name="url" value="jdbc:mysql://localhost/bdd_itrekrute" />
     <property name="username" value="root" />
     <property name="password" value="" />
</bean>
<bean id="SessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
 <property name="dataSource" ref="dataSource" />
 <property name="annotatedClasses">
  <list>
     <value>ma.it.model.Abonnementclient</value>
     <value>ma.it.model.Abonnementprestataire</value>
     <value>ma.it.model.Abonnementrecruteur</value>
     <value>ma.it.model.Administrateur</value>
     <value>ma.it.model.Appeloffre</value>
     <value>ma.it.model.Candidat</value>
     <value>ma.it.model.Candidature</value>
     <value>ma.it.model.Categorieao</value>
     <value>ma.it.model.Client</value>
     <value>ma.it.model.Competence</value>
     <value>ma.it.model.Competencelinguistique</value>
     <value>ma.it.model.Compte</value>
     <value>ma.it.model.Cv</value>
     <value>ma.it.model.Devis</value>
     <value>ma.it.model.Domainecompetence</value>
     <value>ma.it.model.Experience</value>
     <value>ma.it.model.Favorisao</value>
     <value>ma.it.model.Formation</value>
     <value>ma.it.model.Langue</value>
     <value>ma.it.model.Lettremotivation</value>
     <value>ma.it.model.Loisir</value>
     <value>ma.it.model.Moderateur</value>
     <value>ma.it.model.News</value>
     <value>ma.it.model.Offreemploi</value>
     <value>ma.it.model.Offrefavoris</value>
     <value>ma.it.model.Pays</value>
     <value>ma.it.model.Prestataire</value>
     <value>ma.it.model.Recruteur</value>
     <value>ma.it.model.Secteur</value>
     <value>ma.it.model.Souscategorie</value>
     <value>ma.it.model.Typeabonnclt</value>
     <value>ma.it.model.Typeabonnpresta</value>
     <value>ma.it.model.Typeabonnrecrut</value>
     <value>ma.it.model.Typecontrat</value>
     <value>ma.it.model.Ville</value>
     <value>ma.it.model.Ville</value>
  </list>
 </property>
 <property name="hibernateProperties">
 <props>
 <prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
 </props>
 </property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="SessionFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<context:annotation-config/>
<context:component-scan base-package="ma.it"></context:component-scan>
 
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
    <property name="scopes">
        <map>
            <entry key="session">
                <bean class="org.springframework.web.context.request.SessionScope"/>
            </entry>
        </map>
    </property>
</bean>
 
</beans>

**fxrobin** · 11/05/2012, 17h02

je pense, mais je ne suis pas sûr, que c'est parce que l'id de ton bean est "SessionFactory" (majuscule) alors que ce devrait être "sessionFactory" (minuscule) pour que l'@Autowired fonctionne, mais je ne suis pas totalement certain.

attention toutefois si tu changes l'id, tu as des ref="SessionFactory" dans ton fichier de config qu'il faudra aussi changer.

**lamia89** · 14/05/2012, 00h14

j'ai toujour le même problème , même si j'ai effectué les modifications que vous avez mentionné

**chougadosu** · 28/11/2012, 00h32

Bonjour à tous,
je travaille sur un projet JEE, et j'ai ce genre d'erreur lors du lancement de navigateur mais je ne vois pas là où j'ai declaré une variable à null. java.lang.NullPointerException:
beans.BeanEvent.doGetAllRessources(BeanEvent.java:135)
beans.BeanEvent.<init>(BeanEvent.java:96)

Voici ma controillerBean:

Code :

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public class BeanEvent {
private RessourceVo ressourceConnected;
private List<BeanColorRessource> listColorsRessources = new ArrayList<BeanColorRessource>();
private List<BeanColorRessource> listColorsRessourcesTmp = new ArrayList<BeanColorRessource>();
 
public BeanEvent() {
        FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("update");
        FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("gate");
        FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("inscriptionNotif");
        FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("period");
        doGetAllRessources();
 
    }
 
private void doGetAllRessources() {
        BusinessDelegateRessource bdRessource = new BusinessDelegateRessource();
        try {
            this.ressourceConnected = bdRessource.getRessourceByLogin((String) FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("login"));
        } catch (Exception e) {
            e.printStackTrace();
            HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
            try {
                FacesContext.getCurrentInstance().getExternalContext().getSessionMap().remove("event");
                response.sendRedirect("accessdenied.jspx");
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
        BeanColorRessource beanColorRessource = new BeanColorRessource();
        listColorsRessources.clear();
        this.listColorsRessources = beanColorRessource.doGetColorsRessourcesVisibleByIdRessourceMaster(
                this.ressourceConnected.getIdRessource()); 
        //Prenait un int en dur ('1')
        listColorsRessourcesTmp.clear();
        listColorsRessourcesTmp.addAll(listColorsRessources);
        BeanRessourceType beanRessourceType = new BeanRessourceType();
        this.listRessourceTypes = beanRessourceType.doGetAllTypeRessources();
 
        BusinessDelegateParametre delegateParametre = new BusinessDelegateParametre();
        String selectOnLoad = delegateParametre.getParametreByName("SelectOnLoad").getValue();
 
        int i = 0;
        for (int max = this.listColorsRessources.size(); i < max; i++) {
 
            if (selectOnLoad.equals("1")) {
 
                // Sélectionne la ressource connectée
                BeanColorRessource colorRessource = new BeanColorRessource();
                colorRessource = (BeanColorRessource) this.listColorsRessources.get(i);
                if (colorRessource.getRessourceSlave().getIdRessource() == ressourceConnected.getIdRessource()) {
                    colorRessource.setSelected(true);
                    rowSelectionListener(null);
                }
 
            } else if (selectOnLoad.equals("2")) {
 
                // Sélectionne toutes les ressources
                BeanColorRessource colorRessource = new BeanColorRessource();
                colorRessource = (BeanColorRessource) this.listColorsRessources.get(i);
                colorRessource.setSelected(true);
                rowSelectionListener(null);
 
            }
 
        }
 
    }
}

Voici ma jspx:

Code :

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<ice:panelGrid columns="1" cellpadding="4" cellspacing="4" width="200px">
    <div class="bloc-inscription">
        <ice:dataTable var="res" value="#{event.listColorsRessources}" binding="#{event.dataTable}" rows="30" width="100%" scrollable="true">
         <ice:column>
              <h:graphicImage styleClass="resource-icon" url="imgs/icons/#{res.ressourceSlave.icon}16.png"></h:graphicImage>
              <ice:rowSelector multiple="true" value="#{res.selected}" selectionListener="#{event.rowSelectionListener}" />
               <ice:outputText value="#{res.ressourceSlave.nameRessource}" />
                <div class="resource-color" style="background-color:#{res.color.colorName};">  
                </div>  
        </ice:column>
      </ice:dataTable>
    </div>
</ice:panelGrid>

Merci pour votre aide.

Exception "java.lang.NullPointerException"

Java EE

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