Liferay portlet problem.

public class TaskManagerPortlet extends GenericPortlet  {
	protected String editJSP;
	protected String helpJSP;
	protected String index;
	private static Log _log = LogFactory.getLog(TaskManagerPortlet.class);

	public void init() throws PortletException {
		editJSP = getInitParameter("edit-jsp");
		helpJSP = getInitParameter("help-jsp");
		index = getInitParameter("index");
	}
	
	public void doView(RenderRequest req, RenderResponse res)
	throws IOException, PortletException {
		include(index, req, res);
		//super.doView(req,res);
	}
	protected void include(String path, RenderRequest req, RenderResponse res)
	throws IOException, PortletException {
		PortletRequestDispatcher prd =
			getPortletContext().getRequestDispatcher(path);

		if (prd == null) {
			_log.error(path + " is not a valid include");
		}
		else {
			prd.include(req, res);
		}
	}

}

<portlet>
		<portlet-name>taskmanager</portlet-name>
		<display-name>Task manager</display-name>
		<portlet-class>ipc.ipcms.portlet.taskmanager.TaskManagerPortlet</portlet-class>
		<init-param>
			<name>index</name>
			<value>/html/portlet/ext/task-manager/index.zul</value>
		</init-param>
		<expiration-cache>0</expiration-cache>
		<supports>
			<mime-type>text/html</mime-type>
		</supports>
		<resource-bundle>com.liferay.portlet.StrutsResourceBundle</resource-bundle>
		<portlet-preferences>
			<preference>
				<name>test</name>
				<value>123</value>
			</preference>
		</portlet-preferences>
		<security-role-ref>
			<role-name>power-user</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>user</role-name>
		</security-role-ref>
	</portlet>

<?page id="testZul" title=" New ZUL Title" cacheable="false" 
	language="xul/html" zscriptLanguage="Java" contentType="text/html;charset=UTF-8"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit"?>



<zk xmlns="http://www.zkoss.org/2005/zul"
	xmlns:h="http://www.w3.org/1999/xhtml" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://www.zkoss.org/2005/zul http://www.zkoss.org/2005/zul/zul.xsd">
<window title="My First Window" border="normal" width="200px">Hello, World!</window>
</zk>

<!--zk framework -->
	<listener>
		<description>
		Used to cleanup when a session is destroyed</description>
		<display-name>
		ZK Session Cleaner</display-name>
		<listener-class>org.zkoss.zk.ui.http.HttpSessionListener</listener-class>
	</listener>
	<servlet>
		<description>
		The servlet loads the DSP pages.</description>
		<servlet-name>dspLoader</servlet-name>
		<servlet-class>
		org.zkoss.web.servlet.dsp.InterpreterServlet</servlet-class>
	</servlet>
	<servlet>
		<description>
		ZK loader for ZUML pages</description>
		<servlet-name>zkLoader</servlet-name>
		<servlet-class>
		org.zkoss.zk.ui.http.DHtmlLayoutServlet</servlet-class>
		<init-param>
			<param-name>update-uri</param-name>
			<param-value>/zkau</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet>
		<description>
		The asynchronous update engine for ZK</description>
		<servlet-name>auEngine</servlet-name>
		<servlet-class>
		org.zkoss.zk.au.http.DHtmlUpdateServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>dspLoader</servlet-name>
		<url-pattern>*.dsp</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zul</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zhtml</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>auEngine</servlet-name>
		<url-pattern>/zkau/*</url-pattern>
	</servlet-mapping>