jsf - "#{loginBean.nom}": Target Unreachable, identifier 'loginBean' resolved to null -


i try every solution still have problem:

/acceuil.xhtml @19,30 value="#{loginbean.nom}": target unreachable, identifier 'loginbean' resolved null

i use tomcat 7 server.

can me find problem?

i use 2 bean

this loginbean:

package tn.gestiondintervention.beans;  import java.util.arraylist; import java.util.list;  import javax.faces.bean.managedbean;  import javax.faces.bean.sessionscoped;  import tn.gestiondintervention.model.login; import tn.gestiondintervention.service.loginservice; import tn.gestiondintervention.service.impl.loginserviceimpl;  @managedbean(name = "loginbean") @sessionscoped public class loginbean {      private list<login> loginlist;     private string nom;     private string matricule;       public list<login> getloginlist() {         loginlist=new arraylist<login>();         loginservice loginservice= new loginserviceimpl();         loginlist=loginservice.listlogin();         return loginlist;     }     public void setloginlist(list<login> loginlist) {         this.loginlist = loginlist;     }     public string getnom() {         return nom;     }     public void setnom(string nom) {         this.nom = nom;     }     public string getmatricule() {         return matricule;     }     public void setmatricule(string matricule) {         this.matricule = matricule;     }     public string authentification()     {         loginservice loginservice= new loginserviceimpl();         login login=loginservice.getlogin(getmatricule());         if (login == null) {             return "erroracceuil";         } else {             if (login.getnom() == "admin")              {                 return "succesadmin";             } else                 return "succes";         }  }     @suppresswarnings("null")     public string inscription()     {         loginservice loginservice= new loginserviceimpl();         login login = loginservice.getlogin(getmatricule());          if (login == null){               login.setnom(getnom());             login.setmatricule(getmatricule());             loginservice.addlogin(login);              return "inscript";         }         else return "errorinscript";     }     public string listuser(){          return "succeslisteutilisateur";     } }

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