RE: [Ejtools-users] Problems in running web based JMX browser

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Hi,=20

After some investigations it appears that a standalone Tomcat shows two
majors problems for the use of the Web Based JMX Browser :
- first, the JMX classes are not visible from a WebApp because they are
loaded by a different classloader. Putting the mx4j-jmx.jar into the
WEB-INF/lib directory of the exploded webapp solves the dependencies
problem.
- second, the MBean server is created in the catalina classloader which =
is
not visible by the webapps. As the JMX Browser assumes that MBean =
server is
visible from the webapp, it failed.

See :
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/class-loader-howto.html =
for
more details.

Hope, it will help you to understand the problem.

-----Message d'origine-----
De : Sam Cheung [mailto:sy_...@ya...]
Envoy=E9 : samedi 7 d=E9cembre 2002 23:16
=C0 : Laurent Etiemble; ejt...@li...
Objet : RE: [Ejtools-users] Problems in running web based JMX browser

I just download the WAR file of ejtools and put that
in the Tomcat 4.1.16 beta web application directory
and then hit the index.jsp of the web application from
a browser.

--- Laurent Etiemble <eti...@no...> wrote:
> Can you describe what you are doing and tell me when
> it failed (at
> deployment, on which action, or whatever).
>=20
> Cheers
>=20
> -----Original Message-----
> From: ejt...@li...
> [mailto:ejt...@li...]On
> Behalf Of Sam
> Cheung
> Sent: vendredi 6 decembre 2002 18:05
> To: ejt...@li...
> Subject: [Ejtools-users] Problems in running web
> based JMX browser
>=20
>=20
> Hi,
>=20
> I got the following error when I run the JMX browser
> on Tomcat 4.1.16 beta:
>=20
> Could some one please help.
> HTTP Status 500 -
>=20
>
------------------------------------------------------------------------=
----
> ----
>=20
> type Exception report
>=20
> message
>=20
> description The server encountered an internal error
> () that prevented it from fulfilling this request.
>=20
> exception
>=20
> org.apache.jasper.JasperException:
> javax/management/NotificationListener
> 	at
>
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja=
va:2
> 48)
> 	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(Applica=
tion
> FilterChain.java:247)
> 	at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt=
erCh
> ain.java:193)
> 	at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv=
e.ja
> va:260)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv=
e.ja
> va:191)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241=
5)
> 	at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java=
:180
> )
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa=
lve.
> java:170)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:641)
> 	at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java=
:172
> )
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:641)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.=
java
> :174)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	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:43=
1)
> 	at
>
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processC=
onne
> ction(Http11Protocol.java:386)
> 	at
>
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:53=
7)
> 	at
>
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool=
.jav
> a:533)
> 	at java.lang.Thread.run(Thread.java:536)
>=20
>=20
> root cause
>=20
> javax.servlet.ServletException:
> javax/management/NotificationListener
> 	at
>
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContex=
tImp
> l.java:533)
> 	at
>
org.apache.jsp.index_jsp._jspService(index_jsp.java:450)
> 	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.ja=
va:2
> 04)
> 	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(Applica=
tion
> FilterChain.java:247)
> 	at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt=
erCh
> ain.java:193)
> 	at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv=
e.ja
> va:260)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv=
e.ja
> va:191)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:241=
5)
> 	at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java=
:180
> )
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
> 	at
>
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa=
lve.
> java:170)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:641)
> 	at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java=
:172
> )
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:641)
> 	at
>
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4=
80)
> 	at
>
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
> 	at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.=
java
> :174)
> 	at
>
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i=
nvok
> eNext(StandardPipeline.java:643)
>=20
=3D=3D=3D message truncated =3D=3D=3D

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