JSP Portlet Problem

["Wang, XD (Xiao)" <X....@dl.ac.uk>]

> 		Hi there
> 
> 		I am trying to add a new portlet(JSP), but exception occurs,
> any help is high appreciated.
> 
> 		The portlet registry xreg file has template and action
> parameter names. The java class refered to the action value implements
> remote URL visit by Axis technology. If the Axis classes are used in the
> action class( say, Service service=new Service(); ) , then exception
> occurs, otherwise it works fine. The axis.jar and jaxrpc have been copied
> to tomcat/webapps/jetspeed/WEB-INF/lib.
> 
> 		The exception is:
> 		org.apache.turbine.util.TurbineException: Error rendering
> Velocity template: /controls/html/jetspeed.vm: Invocation of method
> 'getContent' in class
> org.apache.jetspeed.portal.security.portlets.CacheableStatefulPortletWrapp
> er threw exception class java.lang.NoClassDefFoundError : null
> 		The action class is:
> 		package com.dl.infoportal.modules.actions.portlets;
> 		// Turbine stuff
> 		import org.apache.turbine.util.Log;
> 		import org.apache.turbine.util.RunData;
> 		import org.apache.turbine.services.TurbineServices;
> 		// Jetspeed stuff
> 		import org.apache.jetspeed.portal.Portlet;
> 		import
> org.apache.jetspeed.modules.actions.portlets.JspPortletAction;
> 		import org.apache.jetspeed.util.PortletConfigState;
> 		import org.apache.jetspeed.util.PortletSessionState;
> 		import org.apache.jetspeed.util.StringUtils;
> 		// Axis stuff
> 		import org.apache.axis.client.Call;
> 		import org.apache.axis.client.Service;
> 		import javax.xml.namespace.QName;
> 		public class InfoJSPAction extends JspPortletAction
> 		{
> 		    private static final String DNSNAME = "dnsname";
> 
> 		    private static final String RESOURCES = "resources";
> 		    private String
> endpoint="http://www.jino.com/modules/InfoPortal.cgi";
> 		    /**
> 		     * Build the normal state content for this portlet.
> 		     *
> 		     * @param portlet The jsp-based portlet that is being
> built.
> 		     * @param rundata The turbine rundata context for this
> request.
> 		     */
> 		    protected void buildNormalContext(Portlet portlet,
> RunData rundata)
> 		    {
> 	
> System.getProperties().put("proxySet","true");
> 	
> System.getProperties().put("proxyHost","wwwcache.jino.com");
> 	
> System.getProperties().put("proxyPort","9090");		    	
> 		        try
> 		        {
> 				Service service=new Service();	
> 				Call call=(Call)service.createCall();
> 
> 				call.setTargetEndpointAddress( new
> java.net.URL(endpoint) );
> 				call.setOperationName(new
> QName("http://esc.dl.ac.uk/Resources","xml_description"));
> 			            // Retrieve portlet parameters
> 			            String dnsname = (String)
> PortletSessionState.getAttributeWithFallback(portlet, rundata, DNSNAME);
> 				String ret=(String)call.invoke( new Object[]
> { dnsname } );
> 			            // Place appropriate objects in jsp
> context
> 	
> rundata.getRequest().setAttribute(RESOURCES, ret);
> 		        }
> 		        catch (Exception e)
> 		        {
> 		            Log.error(e);
> 		        }
> 		    }
> 		}
> 
> 		The registry file is :
> 
> 		<?xml version="1.0" encoding="UTF-8"?>
> 		<registry>
> 		    <portlet-entry name="InfoJSP" hidden="false" type="ref"
> parent="JSP" application="false">
> 		        <meta-info>
> 		            <title>infoPortal (JSP)</title>
> 		            <description>This is a demo of infoPortal to
> enquire resources</description>
> 		        </meta-info>
> 		        <parameter name="template" value="InfoJSP.jsp"
> hidden="true" cachedOnName="true" cachedOnValue="true"/>
> 		        <parameter name="action"
> value="portlets.InfoJSPAction" hidden="true" cachedOnName="true"
> cachedOnValue="true"/>
> 		        <media-type ref="html"/>
> 		        <url cachedOnURL="true"/>
> 		        <category group="Jetspeed">tutorial</category>
> 		    </portlet-entry>
> 		</registry>
> 
> 
> 

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