Re: [Resteasy-users] Interceptor & MessageBodyWriter problems

[Weinan Li <l.w...@gm...>]

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Weinan Li
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On Wednesday, November 7, 2012 at 10:34 PM, Henrik Brautaset Aronsen wrote:

> Den 07.11.12 09:29, skrev Henrik Brautaset Aronsen:
> > I've created a sample project that shows two problems I have with RESTEasy interceptors:
> > 
> > A) Somehow neither the MessageBodyReaderInterceptor nor the PreProcessInterceptor triggers.  I really can't figure out why.
> 
> The MessageBodyReaderInterceptor triggers when the called method is a plain String: post(String formValues).  It doesn't trigger if the argument is a MultivaluedMap: post(MultivaluedMap<String,String> formValues.  I believe issue is related: https://issues.jboss.org/browse/RESTEASY-568

Thanks for the feedback Henrik! I've assigned this issue to me and will work on it together with the examples you provided. I'll report my progress here if I have some discoveries. 
> 
> 
> The PreProcessInterceptor does trigger, I only used it wrong.  When AcceptedByMethod.accept() returns true all methods are covered by the interceptor.  I've updated the example project to reflect this.
> 
> Also, I've added a MessageBodyWriterInterceptor.  It does not have the same problems as the MessageBodyReaderInterceptor.
> 
> > B) I have an ExceptionMapper that works great for @Get requests.  When an exception is thrown for a @Post request, though, I get a 
> > 
> >     org.jboss.resteasy.core.NoMessageBodyWriterFoundFailure: Could not find MessageBodyWriter for response object of type: 
> >     no.synth.resteasyinterceptordemo.MyExceptionMapper$Error of media type: application/x-www-form-urlencoded
> 
> This is still a problem, I have no solution here.
> 
> > Are these known defects, or am I doing something very stupid?  I'd be grateful if someone would like to take a look. 
> > 
> > The project is located at https://github.com/henrik242/resteasy-interceptor-demo and I've tried using Tomcat 6 and 7.
> 
> I just pushed some updates to this project, with more tests and additional help text.
> 
> Henrik
> 
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