h：不会触发selectOneMenu值更改侦听器

Question

我觉得价值变化监听器事件没有被触发。此外，我尝试f:valueChangeListener并且永远不会触发事件。

我正在使用primefaces 5.3

任何帮助，请。

- 这是表格

<h:form id = "templatelocal_id" name="templatelocal_form">
    <ul>
        <li>
            <h:selectOneMenu 
                id="locale_menu_id" 
                value="#{localizationBean.selectedLocalName}"
                valueChangeListener="#{localizationBean.changeLanguage}"  
                onchange="submit()">
                <f:selectItems 
                    var="c" 
                    value="#{localizationBean.localsList}"
                    itemLabel="#{c.displayLanguage}" 
                    itemValue="#{c.displayLanguage}" />
            </h:selectOneMenu> 
        </li>
    </ul>
</h:form>

这是支持bean。

• 列出项目

  @ManagedBean(name="localizationBean")
  @SessionScoped
  public class LocalizationBean {
  
     private Locale locale;
  
     private Locale selectedLocalName;
  
     private List<Locale> localsList = new ArrayList<Locale>();
  
     public LocalizationBean()
     {
         System.out.println("--------");
     }
  
     @PostConstruct
         public void init() 
         {
             System.out.println("--------Init");
  
             locale = FacesContext.getCurrentInstance().getExternalContext().getRequestLocale();
  
             localsList.add(locale);
             Iterator<Locale> lsList = FacesContext.getCurrentInstance().getApplication().getSupportedLocales();
  
             while (lsList.hasNext()) {
                 Locale currentLocale = lsList.next();
                 localsList.add(currentLocale);
             }
         }
  
     public void changeLanguage(ValueChangeEvent e)
     {
         System.out.println("--------change");
  
         Object newValue = e.getNewValue();
         System.out.println("-----------" + newValue);
     }
  
     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);
     }
  
     public Locale getSelectedLocalName() {
         return selectedLocalName;
     }
  
     public void setSelectedLocalName(Locale selectedLocalName) {
         this.selectedLocalName = selectedLocalName;
     }
  
     public List<Locale> getLocalsList() {
         return localsList;
     }
  
     public void setLocalsList(List<Locale> localsList) {
         this.localsList = localsList;
     }
  
  }