Can't us Oracle API on the simple JSP pages added to the portlet........

Question

Hi,
I added a jsp page in the portlet which is not a standard page like the default show mode pages. I have added some code which actually access a resource inside the porltet.
" img src="<%= UrlUtils.constructResourceURL (pReq, HttpPortletRendererUtil .absoluteLink(request, "icon.png")) %> "
For that you have to add the following two imports in the code
mport="oracle.portal.provider.v2.render.http.HttpPortletRendererUtil"
import="oracle.portal.provider.v2.url.UrlUtils"
This library is available with the JDeveloper and I dont get any error while compiling and even deploying the portlet war file on the applcation server. Strangely the same piece of code shows the image perfectly for the default show page of the portlet but it generates 500 Internal server error for the other simple jsp page I added, which suggests that the server is unable to find the function:
500 Internal Server Error
java.lang.NullPointerException
     at oracle.portal.provider.v2.url.UrlUtils.constructResourceURL(Unknown Source)
     at _htdocs._elogbooksubsystems._DAQ._jspService(_DAQ.java:54)
     [SRC:/htdocs/elogbooksubsystems/DAQ.jsp:15]
     at com.orionserver[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:350)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:824)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:285)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:126)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:534)
Can anybody help? Is this possible to use oracle api in the pages which are though added to the portlet but not the standard show modes pages?
Thanking you in anticipation
Regards,
Omer Alvi
Message was edited by:
user574208
Message was edited by:
user574208

Answer 1

Thanks Nrintala. I tried to work with multipage portlet example provided in the jpdk. In fact I created another portlet with two pages and copied the code of the two pages of the multipage portlet. (Off course I took care of the names and stuff). Later I modified the provider.xml by defining "next_page" parameter. When I viewed my portlet, first page appeared fine but when I click on the link which should show the second page, I got an error which says.
Error:      Error occurred while rendering portlet - see provider log file for details.
Do you think I have missed something? I am depoying my war file on the stand alone OC4J and some how I have not been able to find the application.log file in my application inside the application_deployments of the J2EE_HOME. I have pasted the provider.xml file and I would be grateful if you can help.
<?xml version = '1.0' encoding = 'UTF-8'?>
<?providerDefinition version="3.1"?>
<provider class="oracle.portal.provider.v2.DefaultProviderDefinition">
<session>false</session>
<passAllUrlParams>true</passAllUrlParams>
<portlet class="oracle.portal.provider.v2.DefaultPortletDefinition">
<id>1</id>
<name>mulitpage</name>
<title>testing multi page</title>
<description>My Portlet Description</description>
<timeout>40</timeout>
<showEditToPublic>false</showEditToPublic>
<hasAbout>false</hasAbout>
<showEdit>false</showEdit>
<hasHelp>false</hasHelp>
<showEditDefault>false</showEditDefault>
<showDetails>false</showDetails>
<renderer class="oracle.portal.provider.v2.render.RenderManager">
<contentType>text/html</contentType>
<showPage>/htdocs/mulitpage/first.jsp</showPage>
<pageParameterName>next_page</pageParameterName>
</renderer>
</portlet>
</provider>
Best regards,
Omer
Message was edited by:
user574208
Message was edited by:
user574208