Hi everyone!
I'm running a stock tomcat 6 (6.0.18-0ubuntu6.1) on kubuntu Jaunty amd64
and Sun JDK (1.6.0_13-b03) , with a website consisting of several jsps,
some of which make use of a POJO session bean, placed in a jar file
under WEB-INF/lib.
I'm encountering a very strange error, in the form of a
NoClassDefFoundError (pasted fully below). Related scenario:
1. It happens only on one of the pages, which happens to be the main
index.jsp.
2. It happens only when this page is the first to be accessed after a
restart. If any other page is accessed before it, everything is ok.
3. After the first error shows up, hitting refresh causes the error to
repeat, however the stack trace is slightly different: the "Caused by"
section disappears (and the top part remains the same).
4. After the error shows up, if the index_jsp.class file under tomcat's
work directory is deleted and the page refreshed - everything is ok.
5. It happens consistently after every restart (either reboot, or
/etc/init.d/tomcat6 restart).
6. It happens consistently also after deleting the entire tomcat work
folder for this hostname.
7. Nothing else changes between the tests afaik - jsps, configuration
etc. remain untouched.
Any ideas?
The full stacktrace:
java.lang.NoClassDefFoundError: web/SessionBean
at org.apache.jsp.index_jsp._jspService(index_jsp.java:69)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276)
at
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283)
at
org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
at
org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: web.SessionBean
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:128)
at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:66)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
... 32 more
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