My question was stupid ... sorry
I used the pipeline functionnality to modify the body of my request after posting in the ActiveMQ and it works! ... <inOnly uri="activemq:queue:XXX" /> <when> <simple>${header.accept} contains 'application/json'</simple> <camel:setBody > <camel:constant>{{module.publication.mq.json.success}}</camel:constant> </camel:setBody> </when> ... -- View this message in context: http://camel.465427.n5.nabble.com/SOLVED-ActiveMQ-Request-Reply-tp5728478p5728557.html Sent from the Camel - Users mailing list archive at Nabble.com.