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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 28949] New: - Occasional NoClassDefFoundError for tag classes at startup
Date Thu, 13 May 2004 13:09:37 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=28949

Occasional NoClassDefFoundError for tag classes at startup

           Summary: Occasional NoClassDefFoundError for tag classes at
                    startup
           Product: Tomcat 5
           Version: 5.0.19
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: mguillemot@yahoo.fr


I get now and then a NoClassDefFoundError concerning a tag class (not always the
same) after I've restarted the webapp. After a reload, the concerned page is
displayed normally and it doesn't seem to have any consequences. This occurs on
a page with many frames (I've not seen it on any other page, but I call this
page really more frequently than others) and when it occurs, only 1 frame is
concerned.

The stacktrace from the last case:
2004-05-13 14:53:38 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp
threw exception
java.lang.NoClassDefFoundError: org.apache.struts.taglib.html.ImgTag
        at org.apache.jsp.nav.navtop_jsp.class$(navtop_jsp.java:262)
        at org.apache.jsp.nav.navtop_jsp._jspx_meth_html_img_0(navtop_jsp.java:459)
        at org.apache.jsp.nav.navtop_jsp._jspx_meth_html_link_0(navtop_jsp.java:440)
        at org.apache.jsp.nav.navtop_jsp._jspService(navtop_jsp.java:182)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at
de.internetzky.util.web.JSPEngineExceptionReporter.doFilter(JSPEngineExceptionReporter.java:45)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at
de.internetzky.util.web.SessionsObserver$SessionCreationFilter.doFilter(SessionsObserver.java:77)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at de.internetzky.jnetz.web.Log4jNDCFilter.doFilter(Log4jNDCFilter.java:68)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:233)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
        at java.lang.Thread.run(Thread.java:536)

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