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ClassNotFound Exception when filling JasperReport from RCP app. [message #437702]

Mon, 03 October 2005 06:52

Messages: 36
Registered: July 2009

Member

Hi!

I`ve got a problem:

When I`m trying to print my JasperReport from usual standalone file
everethnig is Ok, report is loaded, compiled and filled, then printed.
But when I`m trying to do this from my Eclipse app. Im using the same
code, the same report file. I have exception in the filling stage. First I
thought that this is Jasper Problem, but since report is working from
usual file, but not from Elcipse who knows...?

So I`ve debugged this situation and found that exception is rised in :
<code>org.eclipse.core.runtime.internal.adaptor.ContextFinder </code> where it
can`t find <code>net.sf.jasperreports.engine.fill.JRFillParameter</code > class

in fact in my program I recieve just an error msg:
------------------------------------------------------
Unhandled event loop exception
Reason:
net/sf/jasperreports/engine/fill/JRFillParameter
------------------------------------------------------

Thats all I was able to find. Maybe I`m missing something?
Does Anybody had this error? Any workarounds?

(I`m using Eclispe3.1, j2SE5.0 (update 4) and jasper reports 1.0.2 (tried
1.0.1. as well) )

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Re: ClassNotFound Exception when filling JasperReport from RCP app. [message #437706 is a reply to message #437702]

Mon, 03 October 2005 13:10

Haris Peco

Messages: 1072
Registered: July 2009

Senior Member

Andrey
I have same problem. Jasperreports create class in memory
and eclipse loader can't find dependency classes in this class
I have workaround for context classloader
see thread on eclipse.platform news group with subject
'eclipse 3.1 classloader, jasperreports in rcp application'

Peco
Andrey Bondarenko wrote:

> Hi!
>
> I`ve got a problem:
>
> When I`m trying to print my JasperReport from usual standalone file
> everethnig is Ok, report is loaded, compiled and filled, then printed.
> But when I`m trying to do this from my Eclipse app. Im using the same
> code, the same report file. I have exception in the filling stage. First I
> thought that this is Jasper Problem, but since report is working from
> usual file, but not from Elcipse who knows...?
>
> So I`ve debugged this situation and found that exception is rised in :
> <code>org.eclipse.core.runtime.internal.adaptor.ContextFinder </code> where
> it can`t find
> <code>net.sf.jasperreports.engine.fill.JRFillParameter</code > class
>
> in fact in my program I recieve just an error msg:
> ------------------------------------------------------
> Unhandled event loop exception
> Reason:
> net/sf/jasperreports/engine/fill/JRFillParameter
> ------------------------------------------------------
>
> Thats all I was able to find. Maybe I`m missing something?
> Does Anybody had this error? Any workarounds?
>
> (I`m using Eclispe3.1, j2SE5.0 (update 4) and jasper reports 1.0.2 (tried
> 1.0.1. as well) )

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