Problem developing portlet

Rafael Jorge <[email protected]>
Newsgroups gmane.comp.cms.jahia.devel
Message-ID <[email protected]> 
Hi, i'm trying to develop a portlet to Jahia.
I can deploy, but it not works, appear to me: "Error while retrieving
application Ver Noticia" and on the log from Tomcat the stack trace is
this (My source code  in Java and web.xml are below):


----------------------------------8<-----------------------------------------
4663260 [http-8080-Processor24] DEBUG
org.jahia.data.fields.JahiaApplicationField.load:60 - Loading
application field...
4663262 [http-8080-Processor24] DEBUG
org.jahia.data.fields.JahiaApplicationField.load:63 - value=36
4663264 [http-8080-Processor24] DEBUG
org.jahia.services.fields.ContentApplicationField.getValue:90 -
Loading app value...
4663268 [http-8080-Processor24] ERROR
org.jahia.services.applications.JahiaApplicationsDispatchingServletService.dispatchRequest:347
- Error in web application for app Ver Noticias
java.lang.NullPointerException
        at org.jahia.services.applications.RequestDispatcherWrapper.include(RequestDispatcherWrapper.java:233)
        at org.jahia.services.applications.JahiaApplicationsDispatchingServletService.dispatchRequest(JahiaApplicationsDispatchingServletService.java:310)
        at org.jahia.services.applications.JahiaApplicationsDispatchingServletService.getAppOutputNoAction(JahiaApplicationsDispatchingServletService.java:634)
        at org.jahia.services.applications.JahiaApplicationsDispatchingServletService.getAppOutput(JahiaApplicationsDispatchingServletService.java:891)
        at org.jahia.services.fields.ContentApplicationField.getValue(ContentApplicationField.java:102)
        at org.jahia.services.fields.ContentField.getValue(ContentField.java:265)
        at org.jahia.data.fields.JahiaApplicationField.load(JahiaApplicationField.java:65)
        at org.jahia.services.fields.JahiaFieldBaseService.loadField(JahiaFieldBaseService.java:841)
        at org.jahia.services.fields.JahiaFieldBaseService.loadField(JahiaFieldBaseService.java:804)
        at org.jahia.services.containers.ContainerFactory.fullyLoadContainer(ContainerFactory.java:147)
        at org.jahia.services.containers.ContainerFactoryProxy.load(ContainerFactoryProxy.java:136)
        at org.jahia.data.containers.JahiaContainer.checkProxy(JahiaContainer.java:870)
        at org.jahia.data.containers.JahiaContainer.getField(JahiaContainer.java:462)
        at org.jahia.taglibs.field.AbstractFieldTag.doStartTag(AbstractFieldTag.java:137)
        at org.apache.jsp.jsp.jahia.templates.myjahiasite.corporate_005fportal_005ftemplates.include.box_jsp._jspService(box_jsp.java:2224)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:510)
        at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
        at org.apache.jsp.jsp.jahia.templates.myjahiasite.corporate_005fportal_005ftemplates.home_jsp._jspService(home_jsp.java:3933)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
        at org.jahia.engines.EngineRenderer.renderCore(EngineRenderer.java:182)
        at org.jahia.engines.EngineRenderer.render(EngineRenderer.java:78)
        at org.jahia.engines.core.Core_Engine.processCore(Core_Engine.java:186)
        at org.jahia.engines.core.Core_Engine.handleActions(Core_Engine.java:107)
        at org.jahia.operations.OperationManager.handleOperations(OperationManager.java:279)
        at org.jahia.bin.JahiaAction.execute(JahiaAction.java:50)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
        at org.jahia.bin.Jahia.process(Jahia.java:1522)
       at org.jahia.bin.Jahia.service(Jahia.java:846)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
        at java.lang.Thread.run(Thread.java:534)

---------------------------------->8-----------------------------------------

------------------------>8---Source-Code---8<---------------------------
package garimpar.noticia;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class VerNoticia extends HttpServlet{

	Connection    Conn         = null;
    Statement     Query;
    ResultSet     Res;
    boolean       Connected    = false;
    
     /**
      * Metodo principal do portlet (Copy and paste from
http://www.jahia.org/jahia/webdav/site/jahia_org/shared/documentation/WebAppGuideDRAFT1.pdf
)
      * 
      * @param request
      * @param response
      */
    protected void service (HttpServletRequest request,
    		                HttpServletResponse response)
                            throws ServletException,IOException {
        

    	PrintWriter writer = response.getWriter();
    	String name = request.getParameter("name");
    	
    	response.setContentType("text/html");
    	writer.println("Dare demo de kido");
    	if (name == null) {
    		writer.println("<form method=\"post\" action=\"" + 
    				response.encodeURL( request.getContextPath() + "/hello" ) + 
    				"\">"); 
    		writer.println("Enter your name: <input name='name'>");
    		writer.println("<br/><input type='submit' value='Submit'>"); 
    		writer.println("</form>"); 
    		
    	} else { 
    		writer.println("Hello <b>" + name + "</b>"); 
    	}
    }
}
------------------------>8---Source-Code---8<---------------------------

------------------------>8---web.xml---8<---------------------------
<?xml version="1.0"?>
<!--$Id: web.xml,v 1.1 2003/11/11 13:32:15 shuber Exp $ -->
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
    <display-name>Ver Noticias</display-name>
    <servlet>
        <servlet-name>VerNoticia</servlet-name>
        <servlet-class>VerNoticia</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>myjahiasite</servlet-name>
        <url-pattern>/VerNoticia</url-pattern>
    </servlet-mapping>
</web-app>
------------------------>8---web.xml---8<---------------------------



Can anyone help ??
Thanks a lot...=]
-- 
SDM - Garimpar.com
Seja esperto, seja livre, seja Linux
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