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我使用primefaces spring和JSF，当我从我的bean调用方法 它从视图中检索属性，但是当它到达我的服务的方法来通过调用dao来插入数据数据库时方法出现此错误需要解决的方法请问如何解决这个错误？
==============> begin
Nom ==>Charafi
prenom ==>Saad
telephone ==>0622036006
MAT ==>A885511
DAte ==>Wed Mar 01 00:00:00 GMT+01:00 2017
mail ==>[email protected]
==============> end
mars 18, 2017 12:14:45 PM com.sun.faces.lifecycle.InvokeApplicationPhase execute
Avertissement: java.lang.NullPointerException
javax.el.ELException: java.lang.NullPointerException
at org.apache.el.parser.AstValue.invoke(AstValue.java:292)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:149)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
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:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.primefaces.barcelona.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at ma.controle.gestion.bean.RessourceBean.save(RessourceBean.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.el.parser.AstValue.invoke(AstValue.java:279)
... 34 more
mars 18, 2017 12:14:45 PM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError
Grave: java.lang.NullPointerException
at ma.controle.gestion.bean.RessourceBean.save(RessourceBean.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.el.parser.AstValue.invoke(AstValue.java:279)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:149)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
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:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.primefaces.barcelona.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
这里是我的看法
<h:form>
<div class="ui-g">
<div class="ui-g-12">
<div class="card">
<h3>Create</h3>
<p:panelGrid columns="4" columnClasses="ui-grid-col-2,ui-grid-col-4,ui-grid-col-2,ui-grid-col-4" layout="grid" styleClass="ui-panelgrid-blank form-group" style="border:0px none; background-color:transparent;">
<p:outputLabel for="nom" value="Nom"/>
<h:panelGroup styleClass="md-inputfield">
<p:inputText id="nom" value="#{ressourceBean.ressource.nom}" />
<label>nom</label>
</h:panelGroup>
<p:outputLabel for="mail" value="Mail"/>
<h:panelGroup styleClass="md-inputfield">
<p:inputText id="mail" value="#{ressourceBean.ressource.mail}"/>
<label>Mail</label>
</h:panelGroup>
<p:outputLabel for="prenom" value="Prenom"/>
<h:panelGroup styleClass="md-inputfield">
<p:inputText id="prenom" value="#{ressourceBean.ressource.prenom}"/>
<label>prenon</label>
</h:panelGroup>
<p:outputLabel for="telephone" value="Telephone"/>
<h:panelGroup styleClass="md-inputfield">
<p:inputText id="telephone" value="#{ressourceBean.ressource.telephone}"/>
<label>Telephone</label>
</h:panelGroup>
<p:outputLabel for="matricule" value="Matricule"/>
<h:panelGroup styleClass="md-inputfield">
<p:inputText id="matricule" value="#{ressourceBean.ressource.matricule}"/>
<label>Matricule</label>
</h:panelGroup>
<p:outputLabel for="dateEntree" value="Date d'entree"/>
<p:calendar id="dateEntree" value="#{ressourceBean.ressource.dateEntree}"/>
</p:panelGrid>
<p:commandButton icon="ui-icon-save" actionListener="#{ressourceBean.save}" value="Save" style="display:inline-block;margin-top:5px"/>
</div>
</div>
</div>
</h:form>
，这里是我的豆RessourceBean
package ma.controle.gestion.bean;
import java.io.Serializable;
import java.util.Date;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import org.springframework.beans.factory.annotation.Autowired;
import ma.controle.gestion.modele.Ressource;
import ma.controle.gestion.service.IRessourceService;
@ManagedBean(name="ressourceBean")
@ViewScoped
public class RessourceBean implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private String nom;
private String prenom;
private String matricule;
private String mail;
private String telephone;
private Date dateEntree;
private final Ressource ressource = new Ressource();
@Autowired
private IRessourceService ressourceService;
public RessourceBean(String nom, String prenom, String matricule, String mail, Date dateEntree, String telephone) {
super();
this.nom = nom;
this.prenom = prenom;
this.matricule = matricule;
this.mail = mail;
this.dateEntree = dateEntree;
this.telephone=telephone;
}
public RessourceBean() {
super();
}
public void save(){
System.out.println("==============> begin ");
System.out.println(" Nom ==>" + getRessource().getNom());
System.out.println(" prenom ==>" + getRessource().getPrenom());
System.out.println(" telephone ==>" + getRessource().getTelephone());
System.out.println(" MAT ==>" + getRessource().getMatricule());
System.out.println(" DAte ==>" + getRessource().getDateEntree());
System.out.println(" mail ==>" + getRessource().getMail());
System.out.println("==============> end ");
ressourceService.addRessource(ressource);
System.out.println("==============> insertion finished ");
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public IRessourceService getRessourceService() {
return ressourceService;
}
public void setRessourceService(IRessourceService ressourceService) {
this.ressourceService = ressourceService;
}
public Ressource getRessource() {
return ressource;
}
public String getNom() {
return nom;
}
public void setNom(String nom) {
this.nom = nom;
}
public String getPrenom() {
return prenom;
}
public void setPrenom(String prenom) {
this.prenom = prenom;
}
public String getMatricule() {
return matricule;
}
public void setMatricule(String matricule) {
this.matricule = matricule;
}
public String getMail() {
return mail;
}
public void setMail(String mail) {
this.mail = mail;
}
public Date getDateEntree() {
return dateEntree;
}
public void setDateEntree(Date dateEntree) {
this.dateEntree = dateEntree;
}
}
这是实现我的服务RessourceServiceImpl
package ma.controle.gestion.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import ma.controle.gestion.dao.IRessourceDao;
import ma.controle.gestion.modele.Ressource;
@Transactional
@Service("ressourceService")
public class RessourceServiceImpl implements IRessourceDao {
@Autowired
private IRessourceDao ressourceDao;
@Override
public void addRessource(Ressource ressource) {
System.out.println("Service Baby");
ressourceDao.addRessource(ressource);
}
public IRessourceDao getRessourceDao() {
return ressourceDao;
}
public void setRessourceDao(IRessourceDao ressourceDao) {
this.ressourceDao = ressourceDao;
}
}
，这里是我的道RessourceDaoImpl实施
package ma.controle.gestion.dao.impl;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import ma.controle.gestion.dao.IRessourceDao;
import ma.controle.gestion.modele.Ressource;
@Repository("ressourceDao")
public class RessourceDaoImpl implements IRessourceDao {
@Autowired
private SessionFactory sessionFactory;
@Override
public void addRessource(Ressource ressource) {
sessionFactory.getCurrentSession().save(ressource);
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
}
究竟whre是'RessourceBean.java：线62'？它是'System.out.println（“Nom ==>”+ getRessource（）。getNom（））;'？ – JohnnyAW
@JohnnyAW你好，谢谢你的回复：62''ressourceService.addRessource（ressource）;'在保存方法 –
我在这篇文章中找到了解决方案，感谢你的关注和你的时间 http：// stackoverflow。 com/questions/18387993/spring-jsf-integration-how-to-inject-a-spring-component-service-in-jsf-managed –