how to access body/exchange in camel route -

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i trying log exchange or body in camel route as:

<log message="body:${body}"/>

this prints blank ie. "body : ". processors called in same route passing parameters as:

<bean id="userbean" method="findsomeuser(${body.getuserid})"/>

how log exchange/body camel route if 1 wants see contents of exchange ?

the expression used correct body empty @ time. try removing setbody part route , same result. 

 <route >     <from uri="timer://foo?fixedrate=true&amp;period=5000"/>     <setbody>           <constant>message</constant>      </setbody>     <log message="body:${body}"/>  </route>

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