Custom JSON output in Apache Camel xmljson

I think an AggregationStrategy might help:

1) Fist you add the aggregationStrategy to your route:

<camelContext id="camel" xmlns="http://camel.apache.org/schema/spring">  <route>    <from uri="direct:start"/>    <enrich strategyRef="aggregationStrategy">      <constant>direct:resource</constant>    <to uri="direct:result"/>  </route>  <route>    <from uri="direct:resource"/>    ...  </route></camelContext><bean id="aggregationStrategy" class="com.ExampleAggregationStrategy" />

2) Then create the class that will get the Body of the message and transform it the way you want, and set the body to the Exchange again. OBS: Here You will need to use a xml API to add the attributes you want to add.

public class ExampleAggregationStrategy implements AggregationStrategy {    public Exchange aggregate(Exchange original, Exchange resource) {        Object originalBody = original.getIn().getBody();        Object resourceResponse = resource.getIn().getBody();        Object mergeResult = ... // combine original body and resource response        if (original.getPattern().isOutCapable()) {            original.getOut().setBody(mergeResult);        } else {            original.getIn().setBody(mergeResult);        }        return original;    }}

More here.

Is there anything preventing you from using an XSLT component? You can apply that to bring the input XML to a format that directly maps to your desired output JSON format and then push it to xmljson e.g. - (need some clean up to avoid some blank elements)

<?xml version="1.0" encoding="UTF-8"?><xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">    <xsl:template match="Message">        <inputs>        <xsl:for-each select="*">        <inputname><xsl:value-of select="name()" /> </inputname>        <inputvalue><xsl:value-of select="." /></inputvalue>        </xsl:for-each>        </inputs>    </xsl:template></xsl:stylesheet>

Use the Jackson library. You can programmatically change the output format. Unmarshal is only good for direct mapping and not enrichment. Essentially Unmarshal to xml, add a processor and then create your output Json format.