JSF Locale Change Listener not persistent

问题

In my WebApp I created a managed Bean that allows me to change the Locale from French to english and vice versa using Event Change Listener.

      package beans;

    import java.util.Locale;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;

@ManagedBean
@SessionScoped
public class LocaleBean {

    private Locale locale = FacesContext.getCurrentInstance().getViewRoot().getLocale();

    public Locale getLocale() {
        return locale;
    }

    public String getLanguage() {
        return locale.getLanguage();
    }

    public void setLanguage(String language) {
        locale = new Locale(language);
        FacesContext.getCurrentInstance().getViewRoot().setLocale(locale);
    }

}

and in my template.xhtml:

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="#{localeBean.language}"
      xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.prime.com.tr/ui" 
      xmlns:f="http://java.sun.com/jsf/core">
    <f:view contentType="text/html" locale="#{localeBean.locale}"  id="mescoca">
        <h:head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
            <title><ui:insert name="title"></ui:insert></title>
            <h:outputStylesheet name="css/jsfcrud.css"/>
            <!--<f:loadBundle var="bundle" basename="/Bundle"/> -->
        </h:head>

        <h:body style="font-size: small; font-family: Ubuntu,verdana;">
          <h:form>
     <p:panel closable="false" style="float: right;height: 50px;font-size: smaller" >
     <h:panelGrid columns="2" style="text-align: center">
       <h:outputText value="#{bundle.Language}"/>
       <h:selectOneMenu value="#{localeBean.language}"                                 onchange="submit()">
     <f:selectItem itemValue="fr" itemLabel="Français" />
      <f:selectItem itemValue="en" itemLabel="English" />
       <f:selectItem itemValue="fr_FR" itemLabel="France"/>
        <f:selectItem itemValue="en_US" itemLabel="US" />
     </h:selectOneMenu>
        </h:panelGrid>
      </p:panel>

The others pages:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">

    <ui:composition template="/template.xhtml">
        <ui:define name="title">
            <h:outputText value="#{bundle.EditHistoryTitle}"></h:outputText>
        </ui:define>
        <ui:define name="body" >
            <h:panelGroup id="messagePanel" layout="block">
                <h:messages errorStyle="color: red" infoStyle="color: green" layout="table"/>
            </h:panelGroup>
            <h:form>.....

It is working, but the problem is that the language gets back to its first value once I navigate to another page. Otherwise, When I change the language, it only affects the current page and once I move to another page, the localization bundle gets its default value in faces-config.xml

What I need is to make the language persistent through the whole session. Does anyone have a clue plz?

回答1:

You need to wrap your master template in a

<f:view locale="#{LanguageBean.localeCode}">

回答2:

The problem is that when you are setting your Locale in the valueChangeListener you are setting it on the ViewRoot which lives and dies with the current view, and not the session.

You are storing your LocaleCode in the SessionScoped managed bean so you can set the Locale in the ViewRoot for every page and this should fix your problem.

来源：https://stackoverflow.com/questions/6109138/jsf-locale-change-listener-not-persistent

标签

jsf

locale

JSF Locale Change Listener not persistent

问题

回答1:

See also:

回答2: