Portlet 3.0 API Opt In

A portlet must specify version 3.0 to “opt in” to the Portlet 3.0 API. The 3.0 Portlet API version can be specified in the following ways.

Standard Portlet @PortletApplication Annotation

Standard portlets need only specify the @PortletApplication annotation.

@PortletApplication(version="3.0") // 3.0 is the default for this annotation attribute
@PortletConfiguration(portletName="myPortlet")
public class MyPortlet {
    ...
}

Liferay MVC Portlet @Component Annotation

Declarative Services portlets, such as MVCPortlet, can specify version 3.0 in their @Component annotation.

@Component(properties="javax.portlet.version=3.0", service=javax.portlet.Portlet.class)
public class MyDeclarativeServicesPortlet {
    ...
}

portlet.xml Descriptor

All portlets can specify version 3.0 in their portlet.xml descriptor.

<?xml version="1.0"?>

<portlet-app xmlns="http://xmlns.jcp.org/xml/ns/portlet"
			 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
			 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/portlet http://xmlns.jcp.org/xml/ns/portlet/portlet-app_3_0.xsd"
			 version="3.0">
	...
</portlet-app>