Howdy, One is from the line actually throwing the exception, one is the root cause for the exception, i.e. why that line is throwing the exception. You don't always get two stack traces: for example, an NPE will only give you one.
Yoav Shapira Millennium ChemInformatics >-----Original Message----- >From: Dave Naden [mailto:[EMAIL PROTECTED] >Sent: Wednesday, May 28, 2003 4:24 PM >To: [EMAIL PROTECTED] >Subject: stack traces > >I'm wondering why, then a JSP fails, you get two separate stack traces in >the browser, not just one. They seem to have very similar sets of modules >being called, but not exactly the same. Can any body explain? >Example stack trace: > >type Exception report >message >description The server encountered an internal error () that prevented it >from fulfilling this request. >exception >org.apache.jasper.JasperException: 3 > at >org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.j ava: >254) > at >org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295 ) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > at >org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic atio >nFilterChain.java:247) > at >org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil terC >hain.java:193) > at >org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal ve.j >ava:256) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal ve.j >ava:191) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardContext.invoke(StandardContext.java:24 15) > at >org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav a:18 >0) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV alve >.java:171) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:641) > at >org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav a:17 >2) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:641) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve .jav >a:174) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) > at >org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:5 94) > at >org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process Conn >ection(Http11Protocol.java:392) > at >org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5 65) > at >org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo l.ja >va:619) > at java.lang.Thread.run(Thread.java:536) >root cause >java.lang.ArrayIndexOutOfBoundsException: 3 > at org.apache.jsp.person_jsp.getMood(person_jsp.java:19) > at org.apache.jsp.person_jsp._jspService(person_jsp.java:64) > at >org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > at >org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.j ava: >210) > at >org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295 ) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) > at >org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applic atio >nFilterChain.java:247) > at >org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFil terC >hain.java:193) > at >org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperVal ve.j >ava:256) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardContextValve.invoke(StandardContextVal ve.j >ava:191) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardContext.invoke(StandardContext.java:24 15) > at >org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.jav a:18 >0) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherV alve >.java:171) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:641) > at >org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.jav a:17 >2) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:641) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve .jav >a:174) > at >org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext. invo >keNext(StandardPipeline.java:643) > at >org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 480) > at >org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) > at >org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) > at >org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:5 94) > at >org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process Conn >ection(Http11Protocol.java:392) > at >org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:5 65) > at >org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo l.ja >va:619) > at java.lang.Thread.run(Thread.java:536) > >Apache Tomcat/4.1.24 > > > >Dave Naden > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including 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