Not able to deploy a portlet

[Roberto Rios <bo...@yahoo.com.br>]

Hi,

I've got Pluto and have successfully deployed it. I'm
able to run the testsuit without no problem (just to
let you know that I am using WIN2K + J2SDK1.4.2_03 +
TOMCAT4.1.29).

So I decided to build my first porlet, and off course,
I build a HelloWorldPortlet...

It's basically a copy of the TestPortlet.java, as you
can see below.

The problem it's that I am not able to execute it. I
have (I think) followed all the steps. But when I try
to run it, I just receice a SEVERE: Error in Porlet.

I also changed pageregistry.xml and
portletentityregistry.xml. I'm posting just the
fragments that I have changed.

Any help is welcome.

TIA,

Bob Rivers - Brazil

HelloWorldPortlet.java
======================
package myportlets;

import javax.portlet.*;
import java.io.IOException;

public class HelloWorldPortlet extends GenericPortlet
{
	public void doDispatch(RenderRequest request,
RenderResponse response) throws PortletException,
IOException {
		response.setTitle("HelloWorld");

		WindowState state = request.getWindowState();

		if (!state.equals(WindowState.MINIMIZED)) {

			response.setContentType("text/html");
			String jspName = request.getParameter("jspName");
			if (jspName == null) {
				PortletSession session =
request.getPortletSession(false);
				if (session != null) {
					jspName = (String)
session.getAttribute("jspName",
PortletSession.PORTLET_SCOPE);
				}
				if (jspName == null)
					jspName = "helloworld.jsp";
			} else {
				PortletSession session =
request.getPortletSession(false);
				if (session != null) {
					session.setAttribute("jspName", jspName,
PortletSession.PORTLET_SCOPE);
				}
			}
			PortletContext context = getPortletContext();
			PortletRequestDispatcher rd =
context.getRequestDispatcher("/jsp/" + jspName);
			rd.include(request, response);
		}
	}
}

helloworld.jsp
==============
<%@ page session="true" %>
<%@ taglib uri='/WEB-INF/tld/portlet.tld'
prefix='portlet'%>
<%@ page import="javax.portlet.*"%>
<%@ page import="java.util.*"%>
<portlet:defineObjects/>
<%
    System.out.print("HelloWorld");
%>

portlet.xml
===========
<?xml version="1.0" encoding="UTF-8"?>
<portlet-app
xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
version="1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd
http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd">
	<portlet>
<description>MyPortletsDescription</description>
       
<portlet-name>HelloWorldPortlet1</portlet-name>
        <display-name>HelloWorld Portlet
#1</display-name>
       
<portlet-class>myportlets.HelloWorldPortlet</portlet-class>
        <init-param>
			<name>dummyName</name>
			<value>dummyValue</value>
		</init-param>
        <expiration-cache>-1</expiration-cache>
        <supports>
			<mime-type>text/html</mime-type>
            <portlet-mode>VIEW</portlet-mode>
            <portlet-mode>EDIT</portlet-mode>
            <portlet-mode>HELP</portlet-mode>
		</supports>
        <supported-locale>en</supported-locale>       

		<portlet-info>
			<title>HelloWorld Portlet #1</title>
			<short-title>Hello1</short-title>
			<keywords>Hello, HelloWorld</keywords>
        </portlet-info>
	    <portlet-preferences>            
            <preference>
				<name>dumnmyName</name>
	<value>dummyValue</value>
				<read-only>false</read-only>
			</preference>		            <preference>
				<name>dummyName2</name>
	<value>dummyValue2</value>
			</preference>
           
<preferences-validator>org.apache.pluto.core.impl.PreferencesValidatorImpl</preferences-validator>
        </portlet-preferences>        
	</portlet>
 </portlet-app>

web.xml
=======
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems,
Inc.//DTD Web Application 2.3//EN"
                        
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
    <display-name>myportlets</display-name>
    <description>Automated generated Application
Wrapper</description>
    <servlet>
       
<servlet-name>HelloWorldPortlet1</servlet-name>
        <display-name>HelloWorldPortlet
Wrapper</display-name>
        <description>Automated generated Portlet
Wrapper</description>
       
<servlet-class>org.apache.pluto.core.PortletServlet</servlet-class>
        <init-param>
            <param-name>portlet-guid</param-name>
           
<param-value>myportlets.HelloWorldPortlet</param-value>
        </init-param>
        <init-param>
            <param-name>portlet-class</param-name>
           
<param-value>myportlets.HelloWorldPortlet</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
       
<servlet-name>HelloWorldPortlet1</servlet-name>
       
<url-pattern>/HelloWorldPortlet1/*</url-pattern>
    </servlet-mapping>
    <taglib>
       
<taglib-uri>http://java.sun.com/portlet</taglib-uri>
       
<taglib-location>/WEB-INF/tld/portlet.tld</taglib-location>
    </taglib>
</web-app>

pageregistry.xml
================
                <fragment name="p2" type="portlet">
                    <property name="portlet"
value="5.1"/>
                </fragment>


portletentityregistry.xml
=========================
    <application id="5">
        <definition-id>myportlets</definition-id>
        <portlet id="1">
           
<definition-id>myportlets.HelloWorldPortlet1</definition-id>
            <preferences>
               
<pref-name>HelloWorldPortlet5</pref-name>
               
<pref-value>HelloWorldPortlet5</pref-value>
                <read-only>true</read-only>
            </preferences>
        </portlet>
    </application>

log
===
----- Root Cause -----
java.lang.NullPointerException
	at
org.apache.pluto.portalImpl.aggregation.PortletFragment.service(PortletFragment.java:156)
	at
org.apache.jsp.ColumnFragment_jsp._jspService(ColumnFragment_jsp.java:65)
	at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

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