Get session Map - jsf

Question

In My code I have a simple Phase Listener.
public class PhaseTracker implements PhaseListener {
private static final Logger LOGGER = LoggerFactory.getLogger(PhaseTracker.class);
#Override
public void afterPhase(PhaseEvent pe) {
LOGGER.debug("afterPhase " + pe.getPhaseId());
LOGGER.debug(""+FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("haveErrors"));
}
#Override
public void beforePhase(PhaseEvent pe) {
LOGGER.debug("beforePhase " + pe.getPhaseId());
boolean error = false;
Iterator<FacesMessage> messageIterator = pe.getFacesContext().getMessages();
while (messageIterator.hasNext()) {
FacesMessage message = messageIterator.next();
if (message.getSeverity().equals(FacesMessage.SEVERITY_ERROR)) {
LOGGER.debug("beforePhase severity is error");
error = true;
}
}
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put("haveErrors", error);
LOGGER.debug(""+FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("haveErrors"));
}
#Override
public PhaseId getPhaseId() {
LOGGER.debug("getPhaseId");
return PhaseId.ANY_PHASE;
}
}
The problem is that when in a XHTML file when I try to access the variable with
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("haveErrors")
I have a null source and I don´t understand why.

Answer 1

try like this
public synchronized void beforePhase(PhaseEvent event) {
FacesContext context = event.getFacesContext();
ExternalContext ex = context.getExternalContext();
String viewId = "/index.xhtml";
if (context.getViewRoot() != null && context.getViewRoot().getViewId() != null) {
viewId = context.getViewRoot().getViewId();
}
String localeCode = (String) ex.getSessionMap().get("localeCode");
if (localeCode == null) {
ex.getSessionMap().put("localeCode", "en");
context.getViewRoot().setLocale(new Locale("en"));
// System.out.println("locale code " +"En?");
} else if (localeCode != null) {
//System.out.println("locale code " +localeCode);
ex.getSessionMap().put("localeCode", localeCode);
context.getViewRoot().setLocale(new Locale(localeCode));
}