I am getting the following error Servlet.service() for servlet action threw Exception. I want to know the reasons why this Exception will come.How to proceed with it.So please if any body have an idea about it please share.
Anonymous
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Joined: Nov 22, 2008
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Post the complete StackTrace of your Exception. Maybe there was more information about the cause. Olli
Lenin Koduru
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Joined: Jul 29, 2003
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Hai Olli , Thanks for ur reply.Actually i think that i am getting this error because of my web.xml file.ANy how if you have faced with this type of error please suggest me. lenin 09:33:42,542 ERROR [Engine] StandardWrapperValve[action]: Servlet.service() for servlet action threw exception javax.servlet.ServletException: Servlet execution threw an exception at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:269) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve .java:246) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java: 2415) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche rValve.java:171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:172) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 509) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:22 3) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java :594) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce ssConnection(Http11Protocol.java:392) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java :565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP ool.java:619) at java.lang.Thread.run(Thread.java:536) 09:33:42,572 ERROR [Engine] ----- Root Cause ----- java.lang.NoClassDefFoundError: com/unisoft/pilot/struts/CategoryModel at com.unisoft.pilot.struts.StrutsUtil.getAllcategories(StrutsUtil.java: 428) at com.unisoft.pilot.struts.DetailProductAction.execute(DetailProductAct ion.java:68) at org.apache.struts.action.RequestProcessor.processActionPerform(Reques tProcessor.java:465) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.ja va:274) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:142 2) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:505) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve .java:246) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java: 2415) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche rValve.java:171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:172) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 509) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:22 3) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java :594) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce ssConnection(Http11Protocol.java:392) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java :565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP ool.java:619) at java.lang.Thread.run(Thread.java:536)