I use below code, but FacesContext.getCurrentInstance() always return null.
| FacesContext facesContext = FacesContext.getCurrentInstance();
| ExternalContext externalContext =
facesContext.getExternalContext();
| HttpSession session =
(HttpSession)externalContext.getSession(true);
| String sessionId = session.getId();
package com.eastidea.menglishweb.action;
|
| import javax.faces.context.ExternalContext;
| import javax.faces.context.FacesContext;
| import javax.persistence.EntityManager;
| import javax.persistence.NoResultException;
| import javax.servlet.http.HttpSession;
|
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.security.Identity;
|
| import com.eastidea.menglishweb.action.base.BaseActionImpl;
| import com.eastidea.menglishweb.entity.User;
|
| @Name("authenticateAction")
| public class AuthenticateActionImpl extends BaseActionImpl implements
| AuthenticateAction {
|
| private static final long serialVersionUID = 7601102159656515184L;
|
| @In
| private EntityManager entityManager;
|
| @In
| private Identity identity;
|
| public boolean authenticate() {
| try {
| User user = (User) entityManager
| .createQuery(
| "from User where
username = :username and password = :password")
| .setParameter("username",
identity.getUsername())
| .setParameter("password",
identity.getPassword())
| .getSingleResult();
| setCurrentUser(user);
|
| FacesContext facesContext =
FacesContext.getCurrentInstance();
| ExternalContext externalContext =
facesContext.getExternalContext();
| HttpSession session =
(HttpSession)externalContext.getSession(true);
| String sessionId = session.getId();
|
| return true;
| } catch (NoResultException ex) {
| return false;
| }
| }
| }
|
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