来自onChange的JSF动作

public class MyEvent extends javax.faces.event.FacesEvent {
    public void apply(javax.faces.context.FacesContext facesContext) {
        // 自定义的逻辑
        facesContext.getFacesContext().addMessage("myMessage", null, FacesMessage.SEVERITY_INFO);
    }
}

<managed-bean>
    <managed-bean-name>myBean</managed-bean-name>
    <managed-bean-class>com.example.MyBean</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
    <managed-property>
        <property-name>myEvent</property-name>
        <property-class>javax.faces.event.FacesEvent</property-class>
        <value>com.example.MyEvent</value>
    </managed-property>
</managed-bean>

<h:form>
    <h:commandButton value="Trigger Event" action="#{myBean.myEvent}" />
</h:form>