PrimeFaces - SelectOneMenu With Ajax update Example

This example shows how to use SelectOneMenu which is submitted on selection event via Ajax.

JSF page

src/main/webapp/index.xhtml

<h:body style="margin-left:30px">
    <h3>PrimeFaces SelectOneMenu With Ajax Example</h3>

    <h:form>
        <p:outputLabel for="menu"/>
        <br/>
        <p:selectOneMenu id="menu" value="#{itemsBean.selectedItem}">
            <f:selectItem itemLabel="Select One Item"/>
            <f:selectItems value="#{itemsBean.items}"/>
            <p:ajax event="itemSelect" update=":selectedItemText"/>
        </p:selectOneMenu>
    </h:form>
    <br/>

    <h:outputText id="selectedItemText" value="#{itemsBean.selectedItem}"/>
</h:body>

The managed bean

@ManagedBean
@ViewScoped
public class ItemsBean {
  private List<String> items = new ArrayList<>();
  private String selectedItem;

  @PostConstruct
  public void postInit() {
      items.add("Watch");
      items.add("Bottle");
      items.add("Book");
      items.add("Radio");
  }

  public String getSelectedItem() {
      return selectedItem;
  }

  public void setSelectedItem(String selectedItem) {
      this.selectedItem = selectedItem;
  }

  public List<String> getItems() {
      return items;
  }
}

mvn tomcat7:run-war

Output

Example Project

Dependencies and Technologies Used:

• primefaces 6.1 primefaces
• jsf-api 2.2.14: This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
• jsf-impl 2.2.14: This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
• JDK 1.8
• Maven 3.3.9