NoTypeConversionAvailableException: camel rest dsl - rest

Question

I have a web service like this:
<camelContext id="camel-CallAPI" xmlns="http://camel.apache.org/schema/blueprint" >
<!--Web service starts working -->
<restConfiguration bindingMode="auto" component="restlet" host="localhost" port="8889"/>
<rest path="/check">
<post uri="/version" consumes="application/json" produces="application/json">
<to uri="direct:first"/>
</post>
</rest>
<route>
<from uri="direct:first"/>
<setHeader headerName="Content-Type" id="header_contentType">
<constant>application/json</constant>
</setHeader>
<log message="after set header :: ${body}"/>
<to uri="http4://..."/>
<convertBodyTo type="java.lang.String"/>
<log message="the result of the testCheckLastVersion :: ${body}"/>
I'm sending a json content to this web service with the help of postman, and I need my web service to send that json to another API that has been mentioned in direct:first.
but when I call my web service in postman an error is happening:
org.apache.camel.InvalidPayloadException: No body available of type: java.io.InputStream but has value: {version=apk.1.10.0} of type: java.util.LinkedHashMap on: Message[ID-localhost-localdomain-1549348033140-14-4]. Caused by: No type converter available to convert from type: java.util.LinkedHashMap to the required type: java.io.InputStream with value {version=apk.1.10.0}.
can any one help me with this?

Answer 1

I found the solution, the exception caused because I was set the bindingMode="auto" in camelContext which was not suitable here, by removing that, the problem solved.
<camelContext id="camel-CallAPI" xmlns="http://camel.apache.org/schema/blueprint" >
<!--Web service starts working -->
<restConfiguration component="restlet" host="localhost" port="8889"/>
<rest path="/say">
<post uri="/hi" consumes="application/json" produces="application/json">
<to uri="direct:first"/>
</post>
</rest>
<route>
<from uri="direct:first"/>
<setHeader headerName="Content-Type" id="_setHeader2">
<constant>application/json</constant>
</setHeader>
<to uri="http4://..."/>
<convertBodyTo type="java.lang.String"/>
<log message="the result of the testCheckLastVersion :: ${body}"/>
</route>
</camelContext>