Re: JasperLoader Exception

[Remy Maucherat]

> Unfortunately, even changing to an object that is created every time the
> page
> is accessed still gives me the same result. I get a NullPointerException
in
> the ClassLoader the first time I access this particular page after
starting
> the
> Tomcat service, yet on each subsequent access (even after a session times
> out),
> the page loads up without any problems (even with a new browser window)...

I believe you :)
Just send me the JSP, or another JSP which would do the same, so that I can
reproduce it ;-)

> This will forever puzzle me because it is something I can't really prove
to
> you unless I start the service and one of you accesses it for the first
> time.

If I put the JSP on my machine, I'll be able to get it too, right ?

> Any suggestions???

Nope. The line number indicates that the context class laoder is null, and I
don't understand how it can happen.

Remy


--
To unsubscribe:   
For additional commands: 
Troubles with the list: 

RE: JasperLoader Exception

[Pavel Brun]

Unfortunately, even changing to an object that is created every time the
page
is accessed still gives me the same result. I get a NullPointerException in
the ClassLoader the first time I access this particular page after starting
the
Tomcat service, yet on each subsequent access (even after a session times
out),
the page loads up without any problems (even with a new browser window)...

This will forever puzzle me because it is something I can't really prove to
you unless I start the service and one of you accesses it for the first
time.

Any suggestions???

Paul


-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 12:13 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Wellthere is only one problem thissince I am creating a Singleton
object...it exists for all of time. As a resultnobody will see it after
the first time the page is ever accessed. I will try to change this, so the
object is create every time the page is accesed.

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 8:12 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


sureI will set up a test caseI will have something up by about noon
time or so...and I will post a download of the java source code, JSP file
within a ZIP File as well

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 5:36 AM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Thanks for your reply...but could this be the problem that is related to
> the Jasper ClassLoader Exception error I am getting when first accessing
> this page. After I refresh the page (this is after the Singleton instance
> of my object is created), the page loads up without any problems...
>
> Could this be related to a Security Manager (or lack of) within the
context
> of this application?

And how about sending a test case ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>




--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

RE: JasperLoader Exception

[Pavel Brun]

Wellthere is only one problem thissince I am creating a Singleton
object...it exists for all of time. As a resultnobody will see it after
the first time the page is ever accessed. I will try to change this, so the
object is create every time the page is accesed.

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 8:12 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


sureI will set up a test caseI will have something up by about noon
time or so...and I will post a download of the java source code, JSP file 
within a ZIP File as well

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 5:36 AM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Thanks for your reply...but could this be the problem that is related to
> the Jasper ClassLoader Exception error I am getting when first accessing
> this page. After I refresh the page (this is after the Singleton instance
> of my object is created), the page loads up without any problems...
>
> Could this be related to a Security Manager (or lack of) within the
context
> of this application?

And how about sending a test case ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

RE: JasperLoader Exception

[Pavel Brun]

sureI will set up a test caseI will have something up by about noon
time or so...and I will post a download of the java source code, JSP file 
within a ZIP File as well

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 5:36 AM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Thanks for your reply...but could this be the problem that is related to
> the Jasper ClassLoader Exception error I am getting when first accessing
> this page. After I refresh the page (this is after the Singleton instance
> of my object is created), the page loads up without any problems...
>
> Could this be related to a Security Manager (or lack of) within the
context
> of this application?

And how about sending a test case ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

Re: JasperLoader Exception

[Remy Maucherat]

> Thanks for your reply...but could this be the problem that is related to
> the Jasper ClassLoader Exception error I am getting when first accessing
> this page. After I refresh the page (this is after the Singleton instance
> of my object is created), the page loads up without any problems...
>
> Could this be related to a Security Manager (or lack of) within the
context
> of this application?

And how about sending a test case ?

Remy


--
To unsubscribe:   
For additional commands: 
Troubles with the list: 

RE: JasperLoader Exception

[Pavel Brun]

Thanks for your reply...but could this be the problem that is related to
the Jasper ClassLoader Exception error I am getting when first accessing
this page. After I refresh the page (this is after the Singleton instance
of my object is created), the page loads up without any problems...

Could this be related to a Security Manager (or lack of) within the context
of this application?

Thanks

Paul

-Original Message-
From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 30, 2002 7:17 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception




On Wed, 30 Jan 2002, Pavel Brun wrote:

> Date: Wed, 30 Jan 2002 18:34:41 -0500
> From: Pavel Brun <[EMAIL PROTECTED]>
> Reply-To: Tomcat Users List <[EMAIL PROTECTED]>
> To: Tomcat Users List <[EMAIL PROTECTED]>
> Subject: RE: JasperLoader Exception
>
> thanks.was it within code related to Tomcat? Or your own code that
does
> the calling to an RMI server???
>

Tomcat 4 has zero calls to System.setSecurityManager in it.  If you start
it with the appropriate command line option (-security), the standard
startup scripts add the following system property settings to the command
line:

-Djava.security.manager
-Djava.security.policy==$CATALINA_BASE/conf/catalina.policy

which tells the JVM to install a security manager at startup time, using
the specified policy file as a replacement for the one in the JDK
directory (that's what the '==' does).

If you start Tomcat without a security manager, and some code that is
executed calls System.setSecurityManager, that is exactly what the JVM
does.  (Of course, if somebody calls System.exit() it will shut down
Tomcat as well :-).

Moral of the story - you are advised to bone up on how security managers
work in Java, and run Tomcat with the "-security" option at startup time.
You'll need to add any permissions your apps require to the
catalina.policy file (the default sandbox is fairly restrictive), but you
can avoid some nasty things that bad code (or inadvertently called code)
might do to you.

Craig McClanahan


> -Original Message-
> From: Richard Bushell [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 30, 2002 6:12 PM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> We had a similiar problem calling an RMI server from within Tomcat.  It
> turned out that deep down inside some library code there was a call to
> System.setSecurityManager(...).
>
> Hope this helps.
>
> Richard
>
>
> -Original Message-
> From: Pavel Brun [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, January 31, 2002 9:36 AM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> Hello all,
>
> Well...I did have a chance to get up a Website to try to prove my
> example,
> but I couldn't with the example I tried to show.
>
> It actually is a problem related to creating an object that queries an
> LDAP server for certain attributes in order to use them later in the
> application.
> Does anybody know of any latency issues with regards to LDAP queries and
> trying
> to access an object that does this??
>
> Thanks
>
> Paul
>
> -Original Message-
> From: Pavel Brun [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, January 27, 2002 9:48 PM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> Thanks...I will try to get one up as soon as possible. I will let you
> know
> when I have something up and running.
>
> Thanks
>
> Paul
>
> -Original Message-
> From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, January 27, 2002 6:29 PM
> To: Tomcat Users List
> Subject: Re: JasperLoader Exception
>
>
> > Hello all,
> >
> > I am new this this mailing list. I am developing software and am using
> > Java Beans and Tags for this particular application. From time to
> time,
> > when I first access a particular page, I get a Class Loader exception
> > when loading a class:
> >
> > java.lang.NullPointerException
> > at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> > at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> > at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> > .
> > . I leave out these details because it does not bring any
> >   . value.
> > .
> >
> > In this particular case, it crashed when trying to use the
> "pageContext"
> > variable name when using: pageContext.getAttribute() method. Does
> anybody
> > know what the root cause of a Jasper Loader exception is? Is it at all
> >

RE: JasperLoader Exception

[Craig R. McClanahan]

On Wed, 30 Jan 2002, Pavel Brun wrote:

> Date: Wed, 30 Jan 2002 18:34:41 -0500
> From: Pavel Brun <[EMAIL PROTECTED]>
> Reply-To: Tomcat Users List <[EMAIL PROTECTED]>
> To: Tomcat Users List <[EMAIL PROTECTED]>
> Subject: RE: JasperLoader Exception
>
> thanks.was it within code related to Tomcat? Or your own code that does
> the calling to an RMI server???
>

Tomcat 4 has zero calls to System.setSecurityManager in it.  If you start
it with the appropriate command line option (-security), the standard
startup scripts add the following system property settings to the command
line:

-Djava.security.manager
-Djava.security.policy==$CATALINA_BASE/conf/catalina.policy

which tells the JVM to install a security manager at startup time, using
the specified policy file as a replacement for the one in the JDK
directory (that's what the '==' does).

If you start Tomcat without a security manager, and some code that is
executed calls System.setSecurityManager, that is exactly what the JVM
does.  (Of course, if somebody calls System.exit() it will shut down
Tomcat as well :-).

Moral of the story - you are advised to bone up on how security managers
work in Java, and run Tomcat with the "-security" option at startup time.
You'll need to add any permissions your apps require to the
catalina.policy file (the default sandbox is fairly restrictive), but you
can avoid some nasty things that bad code (or inadvertently called code)
might do to you.

Craig McClanahan


> -Original Message-
> From: Richard Bushell [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 30, 2002 6:12 PM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> We had a similiar problem calling an RMI server from within Tomcat.  It
> turned out that deep down inside some library code there was a call to
> System.setSecurityManager(...).
>
> Hope this helps.
>
> Richard
>
>
> -Original Message-
> From: Pavel Brun [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, January 31, 2002 9:36 AM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> Hello all,
>
> Well...I did have a chance to get up a Website to try to prove my
> example,
> but I couldn't with the example I tried to show.
>
> It actually is a problem related to creating an object that queries an
> LDAP server for certain attributes in order to use them later in the
> application.
> Does anybody know of any latency issues with regards to LDAP queries and
> trying
> to access an object that does this??
>
> Thanks
>
> Paul
>
> -Original Message-
> From: Pavel Brun [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, January 27, 2002 9:48 PM
> To: Tomcat Users List
> Subject: RE: JasperLoader Exception
>
>
> Thanks...I will try to get one up as soon as possible. I will let you
> know
> when I have something up and running.
>
> Thanks
>
> Paul
>
> -Original Message-
> From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, January 27, 2002 6:29 PM
> To: Tomcat Users List
> Subject: Re: JasperLoader Exception
>
>
> > Hello all,
> >
> > I am new this this mailing list. I am developing software and am using
> > Java Beans and Tags for this particular application. From time to
> time,
> > when I first access a particular page, I get a Class Loader exception
> > when loading a class:
> >
> > java.lang.NullPointerException
> > at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> > at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> > at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> > .
> > . I leave out these details because it does not bring any
> >   . value.
> > .
> >
> > In this particular case, it crashed when trying to use the
> "pageContext"
> > variable name when using: pageContext.getAttribute() method. Does
> anybody
> > know what the root cause of a Jasper Loader exception is? Is it at all
> > related to insantiating beans or using the  parameter?
> >
> > I have tried looking everywhere, but couldn't find any description or
> > solutions..
>
> Could you post a simple JSP file that would cause the problem ?
>
> Remy
>
>
> --
> To unsubscribe:   <mailto:[EMAIL PROTECTED]>
> For additional commands: <mailto:[EMAIL PROTECTED]>
> Troubles with the list: <mailto:[EMAIL PROTECTED]>
>
>
>
> --
> To unsubscribe:   <mailto:[EMAIL PROTECTED]>
> For additional commands: <mai

RE: JasperLoader Exception

[Richard Bushell]

It was in our own code that did some form of naming lookup.  From
memory, the Tomcat code did something like:

if ( System.getSecurityManager() != null ) {
classLoader = doSomethingThatReturnsNull()
} else {
classLoader = ...
}
classLoader.doSomething()



-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 10:35 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


thanks.was it within code related to Tomcat? Or your own code that
does
the calling to an RMI server???

-Original Message-
From: Richard Bushell [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 30, 2002 6:12 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


We had a similiar problem calling an RMI server from within Tomcat.  It
turned out that deep down inside some library code there was a call to
System.setSecurityManager(...).

Hope this helps.

Richard


-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 9:36 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Hello all,

Well...I did have a chance to get up a Website to try to prove my
example,
but I couldn't with the example I tried to show.

It actually is a problem related to creating an object that queries an
LDAP server for certain attributes in order to use them later in the
application.
Does anybody know of any latency issues with regards to LDAP queries and
trying
to access an object that does this??

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 9:48 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Thanks...I will try to get one up as soon as possible. I will let you
know
when I have something up and running.

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 6:29 PM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Hello all,
>
> I am new this this mailing list. I am developing software and am using
> Java Beans and Tags for this particular application. From time to
time,
> when I first access a particular page, I get a Class Loader exception
> when loading a class:
>
> java.lang.NullPointerException
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> .
> . I leave out these details because it does not bring any
>   . value.
> .
>
> In this particular case, it crashed when trying to use the
"pageContext"
> variable name when using: pageContext.getAttribute() method. Does
anybody
> know what the root cause of a Jasper Loader exception is? Is it at all
> related to insantiating beans or using the  parameter?
>
> I have tried looking everywhere, but couldn't find any description or
> solutions..

Could you post a simple JSP file that would cause the problem ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>




--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

RE: JasperLoader Exception

[Pavel Brun]

thanks.was it within code related to Tomcat? Or your own code that does
the calling to an RMI server???

-Original Message-
From: Richard Bushell [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 30, 2002 6:12 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


We had a similiar problem calling an RMI server from within Tomcat.  It
turned out that deep down inside some library code there was a call to
System.setSecurityManager(...).

Hope this helps.

Richard


-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 9:36 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Hello all,

Well...I did have a chance to get up a Website to try to prove my
example,
but I couldn't with the example I tried to show.

It actually is a problem related to creating an object that queries an
LDAP server for certain attributes in order to use them later in the
application.
Does anybody know of any latency issues with regards to LDAP queries and
trying
to access an object that does this??

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 9:48 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Thanks...I will try to get one up as soon as possible. I will let you
know
when I have something up and running.

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 6:29 PM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Hello all,
>
> I am new this this mailing list. I am developing software and am using
> Java Beans and Tags for this particular application. From time to
time,
> when I first access a particular page, I get a Class Loader exception
> when loading a class:
>
> java.lang.NullPointerException
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> .
> . I leave out these details because it does not bring any
>   . value.
> .
>
> In this particular case, it crashed when trying to use the
"pageContext"
> variable name when using: pageContext.getAttribute() method. Does
anybody
> know what the root cause of a Jasper Loader exception is? Is it at all
> related to insantiating beans or using the  parameter?
>
> I have tried looking everywhere, but couldn't find any description or
> solutions..

Could you post a simple JSP file that would cause the problem ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>




--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

RE: JasperLoader Exception

[Richard Bushell]

We had a similiar problem calling an RMI server from within Tomcat.  It
turned out that deep down inside some library code there was a call to
System.setSecurityManager(...).

Hope this helps.

Richard


-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 31, 2002 9:36 AM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Hello all,

Well...I did have a chance to get up a Website to try to prove my
example,
but I couldn't with the example I tried to show.

It actually is a problem related to creating an object that queries an
LDAP server for certain attributes in order to use them later in the
application.
Does anybody know of any latency issues with regards to LDAP queries and
trying
to access an object that does this??

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 9:48 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Thanks...I will try to get one up as soon as possible. I will let you
know
when I have something up and running.

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 6:29 PM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Hello all,
>
> I am new this this mailing list. I am developing software and am using
> Java Beans and Tags for this particular application. From time to
time,
> when I first access a particular page, I get a Class Loader exception
> when loading a class:
>
> java.lang.NullPointerException
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> at
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> .
> . I leave out these details because it does not bring any
>   . value.
> .
>
> In this particular case, it crashed when trying to use the
"pageContext"
> variable name when using: pageContext.getAttribute() method. Does
anybody
> know what the root cause of a Jasper Loader exception is? Is it at all
> related to insantiating beans or using the  parameter?
>
> I have tried looking everywhere, but couldn't find any description or
> solutions..

Could you post a simple JSP file that would cause the problem ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>




--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

RE: JasperLoader Exception

[Pavel Brun]

Hello all,

Well...I did have a chance to get up a Website to try to prove my example,
but I couldn't with the example I tried to show.

It actually is a problem related to creating an object that queries an
LDAP server for certain attributes in order to use them later in the
application.
Does anybody know of any latency issues with regards to LDAP queries and
trying
to access an object that does this??

Thanks

Paul

-Original Message-
From: Pavel Brun [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 9:48 PM
To: Tomcat Users List
Subject: RE: JasperLoader Exception


Thanks...I will try to get one up as soon as possible. I will let you know
when I have something up and running.

Thanks

Paul

-Original Message-
From: Remy Maucherat [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 27, 2002 6:29 PM
To: Tomcat Users List
Subject: Re: JasperLoader Exception


> Hello all,
>
> I am new this this mailing list. I am developing software and am using
> Java Beans and Tags for this particular application. From time to time,
> when I first access a particular page, I get a Class Loader exception
> when loading a class:
>
> java.lang.NullPointerException
> at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> .
> . I leave out these details because it does not bring any
>   . value.
> .
>
> In this particular case, it crashed when trying to use the "pageContext"
> variable name when using: pageContext.getAttribute() method. Does anybody
> know what the root cause of a Jasper Loader exception is? Is it at all
> related to insantiating beans or using the  parameter?
>
> I have tried looking everywhere, but couldn't find any description or
> solutions..

Could you post a simple JSP file that would cause the problem ?

Remy


--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>



--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>




--
To unsubscribe:   <mailto:[EMAIL PROTECTED]>
For additional commands: <mailto:[EMAIL PROTECTED]>
Troubles with the list: <mailto:[EMAIL PROTECTED]>

Re: JasperLoader Exception

[Remy Maucherat]

> Hello all,
>
> I am new this this mailing list. I am developing software and am using
> Java Beans and Tags for this particular application. From time to time,
> when I first access a particular page, I get a Class Loader exception
> when loading a class:
>
> java.lang.NullPointerException
> at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
> at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
> at org.apache.jsp.settings$jsp._jspService(settings$jsp.java:115)
> .
> . I leave out these details because it does not bring any
>   . value.
> .
>
> In this particular case, it crashed when trying to use the "pageContext"
> variable name when using: pageContext.getAttribute() method. Does anybody
> know what the root cause of a Jasper Loader exception is? Is it at all
> related to insantiating beans or using the  parameter?
>
> I have tried looking everywhere, but couldn't find any description or
> solutions..

Could you post a simple JSP file that would cause the problem ?

Remy


--
To unsubscribe:   
For additional commands: 
Troubles with the list: