How to produce xml response using REST DSL in Apache Camel

Question

Im trying to consume and produce xml response using rest DSL in Apache camel but it ends with an exception how can i marshal my output POJO object to xml. Below is sy Apache Camel route

<camelContext id="camelContext-02bcd908-03ed-4c2c-878a-b87e3a3668ca"
        xmlns="http://camel.apache.org/schema/blueprint">
        <restConfiguration bindingMode="xml" component="servlet"
            contextPath="/camel-example-servlet-rest-blueprint/rest" port="8181">
            <dataFormatProperty key="mustBeJAXBElement" value="true" />
        </restConfiguration>
        <!-- defines the rest services using the context-path /user -->
        <rest consumes="application/xml" path="/user" produces="application/xml">
            <description>User rest service</description>
            <!-- this is a rest GET to view an user by the given id -->
            <get outType="org.apache.camel.example.rest.User" uri="/{id}">
                <description>Find user by id</description>
                <to uri="bean:userService?method=getUser(${header.id})" />
            </get>
            <!-- this is a rest GET to find all users -->
            <get outType="org.apache.camel.example.rest.User[]" uri="/findAll">
                <description>Find all users</description>
                <to uri="bean:userService?method=listUsers" />
            </get>
        </rest>
    </camelContext>

Here is exception im getting

java.io.IOException: org.apache.camel.InvalidPayloadException: No body available of type: javax.xml.bind.JAXBElement but has value: [org.apache.camel.example.rest.User@7f98bc82, org.apache.camel.example.rest.User@4502b96] of type: java.util.TreeMap.Values on: Message[ID-NISB-TEC-C3880-56991-1499145269945-37-3]. Exchange[ID-NISB-TEC-C3880-56991-1499145269945-37-2] at org.apache.camel.converter.jaxb.JaxbDataFormat.marshal(JaxbDataFormat.java:153) at org.apache.camel.processor.MarshalProcessor.process(MarshalProcessor.java:69) at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109) at org.apache.camel.processor.MarshalProcessor.process(MarshalProcessor.java:50)

Victor Tripeno Victor Tripeno · Accepted Answer · 2017-07-04T19:25:14

You can try change your bindingMode to "off".

And when you create the get method, you can use the "consumes" and "produces" parameter equals "application/xml", something like this:

 <get outType="org.apache.camel.example.rest.User[]" uri="/findAll"consumes="application/xml" produces="application/xml">
    <description>Find all users</description>
    <to uri="bean:userService?method=listUsers" />
 </get>

How to produce xml response using REST DSL in Apache Camel

1 Answers