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From Sergey Beryozkin <>
Subject Re: BingPreview: No message body writer has been found
Date Thu, 10 Aug 2017 15:42:03 GMT

as far as I recall, Jackson provider checks in its isReadable if 
MediaType is application/json.

Have a Pre-Match container request filter which changes content type to 
application/json if it is a wildcard.

Cheers, Sergey
On 10/08/17 15:42, Vassilis Virvilis wrote:
> Hi everybody,
> I am using cxf-3.1.7 with jax-rs and JacksonJsonProvider
> My application works normally but when BingPreview tries to crawl my 
> page I get
> ERROR 2017-08-10 12:32:51,561 ajp-nio-8009-exec-4: 
> org.apache.cxf.jaxrs.utils.JAXRSUtils.logMessageHandlerProblem(

> No message body writer has been found for class com.lib.datatype.Config, 
> ContentType: */*
> BingPreview is a Microsoft bot that generates page preview and 
> apparently can ran JavaScript. Here is the user_agent: Mozilla/5.0 
> (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, 
> like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 BingPreview/1.0b
> Apparently BingPreview calls my method with Accept: */* instead of 
> "application/json"
> I can recreate the behavior with curl
> curl -iH "application/json" http://... works as expected
> curl -i http://... gives the same error
> The question is the following: Since the client explicitly specified 
> that accepts anything why CXF has a problem with that and throws an 
> exception? It should return "application/json" and specify that to the 
> ContentType not throw an exception? Right? Wrong? What do you think?
>     Vassilis

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