[Portlet] IPC pour portlets dans un servlet

Voili voilou,
je teste d'utiliser un servlet pour mettre en page mes portlets. Je trouve l'idée plus souple que d'être dépendant d'un JBoss ou autre qui limite à deux ou trois colonnes et qui est trop figé aspect mise en page à mon goût.

Du coup la solution décrite ici : https://portlet-container.dev.java.n..._in_the_webapp

J'ai déployé le portlet-container dans Glassfish.

En gros avec ma jsp je peux dire ou je mets mes portlets et je fais absolument la mise en page que je veux. Je trouve ça super puissant.
Seul hic, je n'arrive pas encore à faire de l'ipc dans ce contexte.
Mon portlet d'envoi d'event crache une erreur et l'autre, celui qui écoute l'event ne se met donc pas à jour.

Est-ce que quelqu'un connait cette solution et peut m'en dire un peu plus ?

Pour l'instant voilà mon erreur :

Code:

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[#|2010-12-17T11:02:18.673+0100|SEVERE|glassfish3.0.1|com.sun.portal.portletcontainer.driver.taglib|_ThreadID=26;_ThreadName=Thread-1;|Exception thrown for PortletTestGlassfish-1.0.0.PortletSendEvent
java.lang.NullPointerException
	at com.sun.portal.portletcontainer.impl.PortletContainer.getDeletedParameters(PortletContainer.java:880)
	at com.sun.portal.portletcontainer.impl.PortletContainer.executeAction(PortletContainer.java:332)
	at com.sun.portal.portletcontainer.invoker.WindowInvoker.processActionInternal(WindowInvoker.java:556)
	at com.sun.portal.portletcontainer.invoker.WindowInvoker.processAction(WindowInvoker.java:454)
	at com.sun.portal.portletcontainer.driver.PortletContent.executeAction(PortletContent.java:87)
	at com.sun.portal.portletcontainer.driver.taglib.PortletTag.executeProcessAction(PortletTag.java:260)
	at com.sun.portal.portletcontainer.driver.taglib.PortletTag.doStartTag(PortletTag.java:215)
	at org.apache.jsp.WEB_002dINF.jsp.portlet_jsp._jspx_meth_pcdriver_portlet_0(portlet_jsp.java from :105)
	at org.apache.jsp.WEB_002dINF.jsp.portlet_jsp._jspService(portlet_jsp.java from :71)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:406)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:483)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:373)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
	at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:822)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:639)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:569)
	at fr.natoine.PortletTestGlassfish.ServletIncludePortlet.doGet(ServletIncludePortlet.java:30)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
	at java.lang.Thread.run(Thread.java:662)

Si ça vous intéresse, voilà mes sources :
portlet.jsp qui va contenir et afficher deux portlets de test :

Code:

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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://portlet-container.dev.java.net" prefix="pcdriver"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
      <pcdriver:portlet portletName="PortletSendEvent" applicationName="PortletTestGlassfish-1.0.0" >
           <h2 class="portlet-title"><pcdriver:title/></h2>
           <pcdriver:render/>
      </pcdriver:portlet>
 
	<pcdriver:portlet portletName="PortletReceptEvent" applicationName="PortletTestGlassfish-1.0.0" >
           <h2 class="portlet-title"><pcdriver:title/></h2>
           <pcdriver:render/>
      </pcdriver:portlet>
 
</body>
</html>

Code de la servlet ServletIncludePortlet appelant la jsp :

Code:

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public class ServletIncludePortlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
 
    /**
     * Default constructor. 
     */
    public ServletIncludePortlet() {
        super();
    }
 
	/**
         * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
         */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		RequestDispatcher _srd = this.getServletContext().getRequestDispatcher(response.encodeURL("/WEB-INF/jsp/portlet.jsp"));
		_srd.include(request, response);
	}
}

Code du portlet envoyant l'event :

Code:

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public class PortletSendEvent extends GenericPortlet 
{
	protected void doView(RenderRequest rRequest, RenderResponse rResponse)
	throws IOException, PortletException {
		rResponse.setContentType("text/html");
		PortletRequestDispatcher prd;
		prd = getPortletContext().getRequestDispatcher(rResponse.encodeURL("/WEB-INF/jsp/sendevent.jsp"));
		prd.include(rRequest, rResponse);
	}
	public void processAction(ActionRequest request, ActionResponse response)
	throws PortletException, IOException {
		System.out.println("processAction");
		this.sendEvent(response);
	}
 
	public void sendEvent(ActionResponse response)
	{
		String _toto = "passée en event";
		response.setEvent("totoString", _toto);
		System.out.println("envoi Event toto");
	}
}

Code du portlet censé recevoir l'event :

Code:

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public class PortletReceptEvent extends GenericPortlet implements EventPortlet
{
	protected void doView(RenderRequest rRequest, RenderResponse rResponse) throws IOException,
	PortletException
	{
		if(rRequest.getParameter("stringEvent")!=null)//Action avec Event
		{
			rResponse.setContentType("text/html");
			PrintWriter writer = rResponse.getWriter();
			writer.write("Event value of totoString : " + rRequest.getParameter("stringEvent"));
			writer.close();
		}
		else //Action sans Event
		{
			rResponse.setContentType("text/html");
			PrintWriter writer = rResponse.getWriter();
			writer.write("Pas d'event pour l'instant !!!");
			writer.close();
		}
	}
 
	public void processEvent(EventRequest request, EventResponse response) {
		Event event = request.getEvent();
		String _toto = "vide";
		if (event.getName().equals("totoString")) {
			// traitement de l'event
			_toto = (String) event.getValue();
			response.setRenderParameter("stringEvent", _toto);
		}
	}
}

Descripteur web.xml :

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>MyPortlet test Maven</display-name>
	<servlet>
		<description>
		</description>
		<display-name>ServletIncludePortlet</display-name>
		<servlet-name>ServletIncludePortlet</servlet-name>
		<servlet-class>fr.natoine.PortletTestGlassfish.ServletIncludePortlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>ServletIncludePortlet</servlet-name>
		<url-pattern>/ServletIncludePortlet</url-pattern>
	</servlet-mapping>
 
	<filter>
        <filter-name>portletDriverFilter</filter-name>
        <filter-class>com.sun.portal.portletcontainer.driver.PortletDriverFilter</filter-class>
    </filter>
 
    <filter-mapping>
        <filter-name>portletDriverFilter</filter-name>
        <url-pattern>/portlet.jsp</url-pattern>
    </filter-mapping>
</web-app>

Descripteur portlet.xml :

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
             version="2.0"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd
      http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd">
   <portlet>
      <portlet-name>PortletSendEvent</portlet-name>
 	<portlet-class>fr.natoine.PortletTestGlassfish.PortletSendEvent</portlet-class>
      <supports>
         <mime-type>text/html</mime-type>
         <portlet-mode>VIEW</portlet-mode>
      </supports>
      <portlet-info>
         <title>PortletSendEvent de test d'envoi d'event</title>
      </portlet-info> 
      <supported-publishing-event>
		<qname>totoString</qname>
	  </supported-publishing-event>   
   </portlet>
 
   <portlet>
      <portlet-name>PortletReceptEvent</portlet-name>
 	<portlet-class>fr.natoine.PortletTestGlassfish.PortletReceptEvent</portlet-class>
      <supports>
         <mime-type>text/html</mime-type>
         <portlet-mode>VIEW</portlet-mode>
      </supports>
      <portlet-info>
         <title>PortletReceptEvent de test de réception d'event</title>
      </portlet-info> 
      <supported-processing-event>
		<qname>totoString</qname>
	  </supported-processing-event>   
   </portlet>
 
   	<event-definition>
		<qname>totoString</qname>
		<value-type>java.lang.String</value-type>
	</event-definition>
</portlet-app>