Hello,
it is my understanding that tomcat uses a valve to detect Throwables
from webapp and redirect to error page. However, in some case, it seems
impossible to redirect to error page:
68937425 [http-8081-Processor14] ERROR
StandardWrapper[/intranet:webdav] - Servlet.service() for servlet
webdav threw exception
java.lang.NullPointerException
Aug 17, 2007 9:11:36 AM org.apache.catalina.core.StandardHostValve custom
SEVERE: Exception Processing
ErrorPage[exceptionType=java.lang.Exception, location=/jsp/error.jsp]
java.lang.IllegalStateException
at org.apache.coyote.Response.reset(Response.java:296)
at org.apache.catalina.connector.Response.reset(Response.java:642)
at org.apache.catalina.connector.Response.reset(Response.java:908)
at
org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:355)
at
org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:211)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:134)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:526)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:526)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:738)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:534)
Problem: because of the valve problem, my jsp is not called. This jsp is
supposed to handle displaying of this NullPointerException's
stacktrace(). Is there a way to configure the standard valve so that is
dumps the stacktrace in tomcat log?
Thank you.
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