Re: BingPreview: No message body writer has been found
Thanks for the pointer.
I haven't decide if I will deploy it yet. I will try it and see what
BingPreview is doing with the subsequent calls. If it is a very big hassle to
make it work I will probably leave it as it is altogether.
Anyway I didn't know about ContainerRequestFilter so that was good to learn.
The following works for me
@PreMatching
public class AcceptWildcardContainerRequestFilter
implements ContainerRequestFilter {
private final Log log = LogFactory.getLog(getClass());
@Override
public void filter(ContainerRequestContext context) throws IOException {
final String accept_header = "Accept";
final String accept_value = context.getHeaderString(accept_header);
if (accept_value != null && accept_value.equals("*/*")) {
log.debug("Modifying accept header: " + accept_value);
context.getHeaders().putSingle(accept_header, "application/json");
}
}
}
Thanks again.
Vassilis
On 08/10/2017 06:42 PM, Sergey Beryozkin wrote:
Hi
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(JAXRSUtils.java:1811):
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
Re: BingPreview: No message body writer has been found
Hi 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(JAXRSUtils.java:1811): 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
BingPreview: No message body writer has been found
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(JAXRSUtils.java:1811): 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
