如何将消息有效负载设置为apache camel rest请求

Question

我需要将JSON内容设置为apache camel rest请求的消息有效负载。我尝试了如下。但它不起作用。

<rest path="/service" consumes="application/json" produces="application/json">

        <put type="com.xxxx.yyyyy.esb.models.UserServiceMapping"
            uri="/create">
            <route>
                <log message="${body.serviceUrl}" />
                <log message="${body.mappedServiceObject}" />
                <log message="${body.systemUserDetails.userName}" />
                <log message="${body.systemUserDetails.password}" />
                <setBody> <simple>{"${body.mappedServiceObject}":{"userName" : 
                    "${body.userName}", "password" : "${body.password}"}} </simple> </setBody>
                <setHeader headerName="CamelRestletLogin">
                    <simple>admin</simple>
                </setHeader>
                <setHeader headerName="CamelRestletPassword">
                    <simple>admin</simple>
                </setHeader>

                <to
                    uri="restlet:http://xxx.xxx.x.xx:8081/xxxxxx/services/yyyyyyy/V1.0/users/create?restletMethod=POST" />
            </route>
        </put>
    </rest>