Jsf spring hibernate session

Question

Hi, I'm currently using hibernate spring and JSF  1/ the first problem In the JSF common header page I try to test if a bean is in the session scope in order to show login or logout link, and the test always fails : the logout link is always displayed.  the JSF page : [code] <f:subview id="header" >        <h:form id="headerForm"> <table cellspacing="0" width="100%"> <tr> <td align="left" valign="middle">           <img border="0" src="images/logo1.jpg"/> </td>  <td align="right" valign="middle"> <br> <!--Accueil< -->  <c:choose> <c:when test="${empty sessionScope.accountBean}">  <h:commandLink action="Sign on"> <h:outputText value="Sign on"/> </h:commandLink>  </c:when> <c:otherwise> <h:commandLink id ="logout" action="#{accountBean.logoutAction}" >      <h:outputText value="log out"/> </h:commandLink> </c:otherwise> </c:choose> </td> </tr> </table>  <table cellspacing="0" width="100%"> <tr> <td> <hr color="#99ca3c" size="5" noShade SIZE=1> </td> </tr> </table>       </h:form> </f:subview>   [/code]   The accountBean code : [code] public class AccountBean extends BaseBean{ //private Logger log = Log.getLog(this); private String uid; private String password;  private boolean loggedIn; private AdminService adminService; private Admin admin; public AccountBean() { this.logger.debug("Authentication"); this.loggedIn = false; uid=null; password=null; // admin=new Admin(); } public String loginAction() {           try { this.logger.debug("loginAction");  admin = adminService.login(this.uid, this.password); //this.serviceLocator.getUserService().login(this.username, this.password);                                if (admin != null) { if("".equals(admin.getUid())|| "".equals(admin.getPassword())){ this.loggedIn=false; String msg = "Le mot de passe et l'identifiant doivent etre saisis ";                     addErrorMessage(msg + ", saississez un mot de passe et un identifiant corrects"); return NavigationResults.RETRY; } else{                     this.loggedIn = true; HttpSession session = SessionUtil.getSession(); session.setAttribute("Admin", this.uid);                                          return NavigationResults.SUCCESS; }                }                else {                     this.loggedIn = false;                                          String msg = "Le mot de passe est incorrect ";                     addErrorMessage(msg + ", saississez un mot de passe correct");                     this.logger.debug(msg);                                          return NavigationResults.RETRY;                }           }           catch (UsernameNotExistException ue) {                String msg = "L'identifiant (login) est incorrect";                this.logger.info(msg);                addErrorMessage(msg + ", ressaysissez votre identifiant.");                                return NavigationResults.RETRY;           }           catch (Exception e) {                this.logger.error("Could not log in user.", e);                addInfoMessage("Could not log in user: Internal Error");                                return NavigationResults.FAILURE;           }      }            /**      * The backing bean action to logout a user.      *       * @return the navigation result      */      public String logoutAction() {           //this.clear(); FacesContext fc = FacesContext.getCurrentInstance(); HttpSession session = (HttpSession) fc.getExternalContext().getSession(false); session.invalidate();            this.logger.debug("Logout successfully.");                      return NavigationResults.MAIN;      }        public String getPassword() { return password; }  public void setPassword(String password) { this.password = password; }  public String getUid() { return uid; }  public void setUid(String uid) { this.uid = uid; }  public Admin getAdmin() { return admin; }   public boolean getLoggedIn() { return loggedIn; }  public void setLoggedIn(boolean loggedIn) { this.loggedIn = loggedIn; }  public void setAdminService(AdminService adminService) { this.adminService = adminService; }   }    [/code]  the faces managed bean configuration [code] <managed-bean-name>accountBean</managed-bean-name> <managed-bean-class>fr.cbmjadmin.views.bean.AccountBean</managed-bean-class> <managed-bean-scope>session</managed-bean-scope> <managed-property>      <property-name>adminService</property-name> <value>#{adminService}</value> </managed-property>    [/code] 2/ the second problem : my application shows a list of datas. I log on the application , i update this list outside the application ( by using sql command) , i try to list my data using the application : the application does not reflect the modifications. I logout using the log out link, then i log on and the application does not reflect the modifications.  what happens? How could I resove these problems. How can i logout properly? how can i show logout link when the user is logged in? and hide the log out link when the user is logout Thanks.

Answer 1

For the first problem, you need to realize that the accountBean always exists since you configured it in the faces-config.xml. So you should use something else (like a property on the bean) to determine if the user has actually logged in.
Secondly, but still on the first issue, it is preferable to use the rendered attribute on the standard JSF components in this situation, instead of the JSTL tags.
Now, as to the second problem, there are a number of possibilities:
- did you commit the changes to the database?
- did you verify that another connection with the native db client can see the changes?
- are you using a cache with Hibernate? Are you taking the proper steps to notify the cache it might have stale data?
- are you keeping the list in session scope in your application? (Logging out doesn't clear the session unless you explicitly code it that way.)