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SLF4JLogFactory does not implement org.apache.commons.logging.LogFactory

 
raghu tammina
Ranch Hand
Posts: 60
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Hi,

i'm getting this exception in stack trace.Googled it but not helped me.Suggest me how to solve it.


ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/MozartCCNewUI].[action]] Servlet.service() for servlet action threw exception: org.apache.commons.discovery.DiscoveryException: Class org.apache.commons.logging.impl.SLF4JLogFactory does not implement org.apache.commons.logging.LogFactory
at org.apache.commons.discovery.tools.ClassUtils.verifyAncestory(ClassUtils.java:180) [:0.2]
at org.apache.commons.discovery.tools.SPInterface.verifyAncestory(SPInterface.java:201) [:0.2]
at org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:195) [:0.2]
at org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:579) [:0.2]
at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:418) [:0.2]
at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:378) [:0.2]
at org.apache.axis.components.logger.LogFactory$1.run(LogFactory.java:45) [:]
at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_45]
at org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:41) [:]
at org.apache.axis.components.logger.LogFactory.<clinit>(LogFactory.java:33) [:]
at org.apache.axis.handlers.BasicHandler.<clinit>(BasicHandler.java:43) [:]
at org.apache.axis.client.Service.getAxisClient(Service.java:104) [:]
at org.apache.axis.client.Service.<init>(Service.java:113) [:]
at com.netsuite.webservices.platform_2013_2.NetSuiteServiceLocator.<init>(NetSuiteServiceLocator.java:12) [:]
at com.zyom.netsuite.NetsuiteIntegrationManager$DataCenterAwareNetSuiteServiceLocator.<init>(NetsuiteIntegrationManager.java:86) [:]
at com.zyom.netsuite.NetsuiteIntegrationManager.<init>(NetsuiteIntegrationManager.java:167) [:]
at com.zyom.netsuite.NetsuiteIntegrationManager.getNetSuiteIntegrationManager(NetsuiteIntegrationManager.java:67) [:]
at com.zyom.netsuite.controller.NetsuiteIntegrationManagerContoller.execute(NetsuiteIntegrationManagerContoller.java:33) [:]
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419) [:1.2.7]
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224) [:1.2.7]
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) [:1.2.7]
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) [:1.2.7]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [:1.0.0.Final]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.1.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final]
at com.zyom.security.LoginMonitorFilter.doFilter(LoginMonitorFilter.java:67) [:]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.1.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.1.0.Final]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [:6.1.0.Final]
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) [:6.1.0.Final]
at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) [:1.1.0.Final]
at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) [:1.1.0.Final]
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) [:6.1.0.Final]
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100) [:6.1.0.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:159) [:6.1.0.Final]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [:6.1.0.Final]
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) [:6.1.0.Final]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [:6.1.0.Final]
at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) [:6.1.0.Final]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [:6.1.0.Final]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [:6.1.0.Final]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:654) [:6.1.0.Final]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:951) [:6.1.0.Final]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_45]
 
Paul Clapham
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My guess is that the two classes are being loaded by different classloaders, and that therefore neither of them can implement or subclass the other. That would mean that the two classes are in different jar files, and that those two jar files are loaded in different contexts. For example one might be loaded by the part of Tomcat which is available to all web applications, and the other might be loaded by your web application. So I would advise putting the two jars in the same place.
 
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