Problème ManagedProperty null

Version imprimable

26/07/2012, 20h47
Cyang

Problème ManagedProperty null

Salut à tous,svp pourriez vous m'aider à régler le problème suivant.
Dans mon managedBean j'ai un objet UserService annoté comme @ManagedProperty,quand j'appelle une méthode add qui consiste a ajouter un nouveau user dans la base je constate que le UserService est null....
Voila l'exception qui apparait :

ATTENTION: #{UserRegisterBean.add2 }: java.lang.NullPointerException
javax.faces.FacesException: #{UserRegisterBean.add2 }: java.lang.NullPointerException
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
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:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 19 more
Caused by: java.lang.NullPointerException
at org.myProject.Bean.UserRegisterManagerBean.add2(UserRegisterManagerBean.java:112)
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.apache.el.parser.AstValue.invoke(AstValue.java:191)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 20 more

Je rajoute que je travaille avec Spring+Hibernate+JSF

Voila mon managedBean

Code:

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package org.myProject.Bean;
 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
 
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.SessionScoped;
 
import org.myProject.model.UserRegister;
import org.myProject.service.IUserRegisterService;
 
 
 
 
 
 
@ManagedBean(name="UserRegisterBean")
@SessionScoped
public class UserRegisterManagerBean implements Serializable {
 
 
	/**
         * 
         */
	private static final long serialVersionUID = 1L;
 
 
	@ManagedProperty(value="#{userRegisterService}")
	IUserRegisterService userRegisterService;
 
 
 
    private String userName;
    private String phone;
    private String email;
    private String password;
    private String firstname;
    private String lastname;
    private Date date;
    private String gender;
    private List<String>genders=null;
 
 
	public UserRegisterManagerBean() {
 
		this.genders=new ArrayList<String>();
		this.genders.add("male");
		this.genders.add("female");
	}
 
 
	public String save(){
		System.out.println(this.getGender());
		System.out.println("ahooo");
		return "succes";
 
	}
 
 
	public void add()
	{
		UserRegister user=new UserRegister();
		System.out.println(getUserName());
		System.out.println(getFirstname());
		System.out.println(getLastname());
		System.out.println(getEmail());
		System.out.println(getGender());
		System.out.println(getPassword());
		System.out.println(getPhone());
		System.out.println(getDate());
		user.setUserName(userName);
		user.setFirstName(firstname);
		//user.setDob(date);
		user.setEmail(email);
		user.setLastName(lastname);
		user.setPassword(password);
		user.setPhone(phone);
		user.setGender(gender);
		//getUserService().save(user);
		//FacesContext context = FacesContext.getCurrentInstance();  
 
	  // context.addMessage(null, new FacesMessage("Successful", "Hello " + getUserName())); 
 
 
 
	}
 
 
	public void add2()
	{
		UserRegister user=new UserRegister();
		System.out.println(getUserName());
		System.out.println(getFirstname());
		System.out.println(getLastname());
		System.out.println(getEmail());
		System.out.println(getGender());
		System.out.println(getPassword());
		System.out.println(getPhone());
		System.out.println(getDate());
		user.setUserName(userName);
		user.setFirstName(firstname);
		//user.setDob(date);
		user.setEmail(email);
		user.setLastName(lastname);
		user.setPassword(password);
		user.setPhone(phone);
		user.setGender(gender);
		System.out.println(getUserRegisterService());
		this.userRegisterService.save(user);
 
 
 
 
 
		//FacesContext context = FacesContext.getCurrentInstance();  
 
	  // context.addMessage(null, new FacesMessage("Successful", "Hello " + getUserName())); 
 
 
 
	}
 
 
 
 
 
 
	public void reset()
	{
		this.userName="";
		this.date=null;
		this.email="";
		this.gender="";
		this.password="";
		this.firstname="";
		this.lastname="";
		this.phone="";
 
	}
 
 
 
 
	public String getUserName() {
		return userName;
	}
 
	public void setUserName(String userName) {
		this.userName = userName;
	}
 
	public String getPassword() {
		return password;
	}
 
	public void setPassword(String password) {
		this.password = password;
	}
 
	public String getFirstname() {
		return firstname;
	}
 
	public void setFirstname(String firstname) {
		this.firstname = firstname;
	}
 
	public String getLastname() {
		return lastname;
	}
 
	public void setLastname(String lastname) {
		this.lastname = lastname;
	}
 
	public Date getDate() {
		return date;
	}
 
	public void setDate(Date date) {
		this.date = date;
	}
 
	public String getGender() {
		return gender;
	}
 
	public void setGender(String gender) {
		this.gender = gender;
	}
 
	public List<String> getGenders() {
		return genders;
	}
 
	public void setGenders(List<String> genders) {
		this.genders = genders;
	}
 
 
 
 
 
	public IUserRegisterService getUserRegisterService() {
		return userRegisterService;
	}
 
 
	public void setUserRegisterService(IUserRegisterService userRegisterService) {
		this.userRegisterService = userRegisterService;
	}
 
 
	public String getPhone() {
		return phone;
	}
 
 
	public void setPhone(String phone) {
		this.phone = phone;
	}
 
 
	public String getEmail() {
		return email;
	}
 
 
	public void setEmail(String email) {
		this.email = email;
	}
 
 
 
 
 
 
 
}

Le faces-config :

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<faces-config
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
    version="2.0">
 
 
	  	<!-- JSF and Spring are integrated -->
  <application>
  <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
  </application>
 
<managed-bean>
 <managed-bean-name>UserRegisterBean</managed-bean-name>
 <managed-bean-class>org.myProject.Bean.UserRegisterManagerBean</managed-bean-class>
 <managed-bean-scope>session</managed-bean-scope>
		<managed-property>
			<property-name>userRegisterService</property-name>
			<value>#{userRegisterService}</value>
		</managed-property>
 </managed-bean>
 
</faces-config>

et finalement la jsf qui appelle la méthode add2

Code:

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<!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:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:p="http://primefaces.org/ui"> 
 
 
<h:head><title>Registration page </title></h:head>
 
<h:body>
 
<h2>Registration form</h2>
<h:form id="main">
 
<p:fieldset legend="Registration Form" toggleable="true" toogleSpeed="500" widgetVar="regWidget" style="width: 500px;">
<h:panelGrid columns="3" width="200" border="0">
 
<h:outputLabel value="UserName"/>
<p:inputText id="userName" value="#{UserRegisterBean.userName}"  required="true" requiredMessage="Name is Required" >
</p:inputText>
<p:message for="userName"/>
 
<h:outputLabel value="Password"/>
<p:password id="Password" value="#{UserRegisterBean.password}"  required="true" requiredMessage="password is Required" >
</p:password>
<p:message for="Password"/>
 
<h:outputLabel value="FirstName"/>
<p:inputText id="FirstName" value="#{UserRegisterBean.firstname}"  required="true" requiredMessage="FirstName is Required" >
</p:inputText>
<p:message for="FirstName"/>
 
<h:outputLabel value="LastName"/>
<p:inputText id="LastName" value="#{UserRegisterBean.lastname}"  required="true" requiredMessage="LastName is Required" >
</p:inputText>
<p:message for="LastName"/>
 
 
 
<h:outputLabel value="Email"/>
<p:inputText id="Email" value="#{UserRegisterBean.email}"  required="true" requiredMessage="Email is Required" >
</p:inputText>
<p:message for="Email"/>
 
 
 
<h:outputLabel value="Phone"/>
<p:inputText id="Phone" value="#{UserRegisterBean.phone}"  required="true" requiredMessage="Number Phone is Required" >
</p:inputText>
<p:message for="Phone"/>
 
 
<h:outputLabel value="Date"/>
<p:calendar value="#{UserRegisterBean.date}"
       id="date" mode="popup"
       converterMessage="Invalid Date"
       pattern="dd-MM-yyyy">
 
    </p:calendar>
<p:message for="date"/>
 
    <h:outputLabel value="Gender" />
 
 
<h:selectOneRadio id="gender" value="#{UserRegisterBean.gender}" >
<f:selectItems value="#{UserRegisterBean.genders}" var="item"
itemLabel="#{item}"
itemValue="#{item}"/>
</h:selectOneRadio>
<p:message for="gender"/>
 
<p:commandButton id="redirect" value="Redirect" action="#{UserRegisterBean.save }"  image="ui-icon-check" ajax="false" />
<p:commandButton id="Add" value="Add" action="#{UserRegisterBean.add2 }" image="ui-icon-disk" ajax="false"/>
<p:commandButton value="Reset" action="#{UserRegisterBean.reset }" image="ui-icon-close" async="true"  process="@this" update="main" immediate="true" />
 
</h:panelGrid>
</p:fieldset>
 
</h:form>
 
</h:body>
</html>

Il y'a egalement une classe DAO....
Mais le problème ne provient pas de cette partie parcque j'ai deja tester avec JUnit

31/07/2012, 09h36
jeffray03

tout d´abord, tu doit la charger au demarrage de l´application:
mettre eager="true".

peux-tu envoyer la classe qui implement userRegisterService.
Eric

Merci pour votre réponse , je l'ai ajouter mais ca ne change rien :( :

voila la classe Service

Code:

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package org.myProject.service;
 
import javax.annotation.Resource;
 
import org.myProject.DAO.IUserRegisterDAO;
import org.myProject.model.UserRegister;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
 
import com.beust.jcommander.ResourceBundle;
 
@Service("userRegisterService")
@Transactional(readOnly=true)
public class UserRegisterService implements IUserRegisterService {
 
 
	@Resource(name="userRegisterDAO")
	IUserRegisterDAO userRegisterDAO;
 
 
	@Transactional(readOnly=false)
	public void save(UserRegister user) {
		// TODO Auto-generated method stub
 
		getUserRegisterDAO().save(user);
	}
 
	public IUserRegisterDAO getUserRegisterDAO() {
		return userRegisterDAO;
	}
 
	public void setUserRegisterDAO(IUserRegisterDAO userRegisterDAO) {
		this.userRegisterDAO = userRegisterDAO;
	}
 
 
 
 
 
}