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From Pid <...@pidster.com>
Subject Re: Trouble with List Application function of Tomcat Manager
Date Fri, 29 Jul 2011 07:20:32 GMT
On 28/07/2011 20:37, Beohm, Thomas wrote:
> Hello!
> 
> I'm running Tomcat 7.0.11 on Windows Server 2008 Enterprise, and recently installed Windows
Updates (to the tune of like 80 of them) on the server.  After doing so, when attempting to
view the list of web apps running in Tomcat, I get the following:
> 
> org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet [HTMLManager] in context with path [/manager] threw
exception
> java.lang.NullPointerException
>                 at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:125)
>                 at javax.servlet.GenericServlet.log(GenericServlet.java:190)
>                 at org.apache.catalina.manager.HTMLManagerServlet.list(HTMLManagerServlet.java:415)
>                 at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:162)
>                 at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>                 at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>                 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
>                 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>                 at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:186)
>                 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
>                 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>                 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
>                 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
>                 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:591)
>                 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
>                 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
>                 at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
>                 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>                 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
>                 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
>                 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
>                 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
>                 at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
>                 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
>                 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>                 at java.lang.Thread.run(Unknown Source)
> 
> Nothing else Tomcat-wise has changed on the server.
> 
> Anybody else out there running Tomcat in this type of environment and run into this issue
(basically a fully-patched Windows 2008 server)?  The trouble was manifest when our monitoring
tools stopped working for Tomcat.  :(

Tomcat is now 7.0.19, can you upgrade?

Reinstalling will probably fix the issue, and will take less time than
trying to unpick what's gone wrong.  (Even though we'd like to know...)


p

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