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Re: Getting Started with ERRest / Could not initialize class er.rest.format.ERXRestFormat error
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Re: Getting Started with ERRest / Could not initialize class er.rest.format.ERXRestFormat error

  • Subject: Re: Getting Started with ERRest / Could not initialize class er.rest.format.ERXRestFormat error
  • From: Todor Mitevski <email@hidden>
  • Date: Fri, 30 Apr 2010 10:52:31 -0700 (PDT)
Most of the time java.lang.NoClassDefFoundError is not the actual problem. There should be another exception before that.
You should be looking for an exception which happens during the static initialization of the class in the message. Any access to this class will trigger NoClassDefFound but it means only that the class is not loaded. It does not tell you why.
Here is an example where the real problem is a NullPointerException but it will crash with NoClassDefFound:

public class Main {
    public static void main(String[] args) {
        try {
            System.out.println(C.s);
        } catch (Throwable e) {
//            System.err.println(e.getClass().getName()
//                    + " - caused by: "
//                    + e.getCause().getClass().getName());
            System.out.println(C.s);
        }

    }

}

class C {
    final static String s = null;
    static {
        s.hashCode();
    }
}


--- On Fri, 4/30/10, Mike Schrag <email@hidden> wrote:

From: Mike Schrag <email@hidden>
Subject: Re: Getting Started with ERRest / Could not initialize class er.rest.format.ERXRestFormat error
To: "WO Dev Group" <email@hidden>
Date: Friday, April 30, 2010, 4:40 AM

looks like a wacky setup, but i don't know what ... i don't know how you could have ERXRouteController exist, but ERXRestFormat NOT exist. NoClassDefFound is almost always a funky classpath problem. Does ERXRestFormat exist in your workspace? Is your ERRest framework a complete build?

ms

On Apr 29, 2010, at 9:52 PM, Johnny Miller wrote:

Hi,

I'm trying to get my head around ERRest and I'm using the ERRestRouteExample as my guide.

So far I just added ERRest to a new project and added one entity from a framework model to my ERXRouteRequestHandler using the addDefaultRoutes method.

I can start the application but when I try to see a basic show route i.e. http://10.0.42.4:53339/cgi-bin/WebObjects/ExampleRestServer.woa/ra/(EntityName).xml

I get the following error:

NoClassDefFoundError: Could not initialize class er.rest.format.ERXRestFormat
  at er.rest.routes.ERXRouteController.format(ERXRouteController.java:366)
  at er.rest.routes.ERXRouteController.errorResponse(ERXRouteController.java:978)
  at er.rest.routes.ERXRouteController.performActionNamed(ERXRouteController.java:1265)
  at er.rest.routes.ERXRouteController.performActionNamed(ERXRouteController.java:1129)
  ... skipped 8 stack elements

Could this be an error in my setup?  ERRest is added to the path so I'm a little confused on the error.

Thanks in advance,

Johnny


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 >Re: Getting Started with ERRest / Could not initialize class er.rest.format.ERXRestFormat error (From: Mike Schrag <email@hidden>)

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