[jboss-user] [JBoss Portal] - org.apache.commons.discovery.DiscoveryException: Class org.a

[GajananM]

when i am running webservice through axis client in potlet 2.7.1. I am getting following error.


stacktrace:




exception 

javax.servlet.ServletException: Servlet execution threw an exception
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


root cause 

java.lang.ExceptionInInitializerError
	org.apache.axis.handlers.BasicHandler.(BasicHandler.java:81)
	org.apache.axis.client.Service.getAxisClient(Service.java:140)
	org.apache.axis.client.Service.(Service.java:149)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanServiceLocator.(PoEndpointBeanServiceLocator.java:12)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanProxy._initPoEndpointBeanProxy(PoEndpointBeanProxy.java:18)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanProxy.(PoEndpointBeanProxy.java:8)
	org.jboss.portal.portlet.samples.SampleClient.service(SampleClient.java:62)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


root cause 

org.apache.commons.discovery.DiscoveryException: Class org.apache.commons.logging.impl.SLF4FLogFactory does not implement org.apache.commons.logging.LogFactory
	org.apache.commons.discovery.tools.ClassUtils.verifyAncestory(ClassUtils.java:180)
	org.apache.commons.discovery.tools.SPInterface.verifyAncestory(SPInterface.java:202)
	org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:196)
	org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:579)
	org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:418)
	org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:378)
	org.apache.axis.components.logger.LogFactory$1.run(LogFactory.java:84)
	java.security.AccessController.doPrivileged(Native Method)
	org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:80)
	org.apache.axis.components.logger.LogFactory.(LogFactory.java:72)
	org.apache.axis.handlers.BasicHandler.(BasicHandler.java:81)
	org.apache.axis.client.Service.getAxisClient(Service.java:140)
	org.apache.axis.client.Service.(Service.java:149)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanServiceLocator.(PoEndpointBeanServiceLocator.java:12)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanProxy._initPoEndpointBeanProxy(PoEndpointBeanProxy.java:18)
	com.sun.j2ee.blueprints.opc.powebservice.PoEndpointBeanProxy.(PoEndpointBeanProxy.java:8)
	org.jboss.portal.portlet.samples.SampleClient.service(SampleClient.java:62)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)



thanks in advance


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