Mule Server 3.6 > Anypoint Studio > Raw JSON as POST data

Question

Still learning Mulesoft's Anypoint Studio... I am confused as how will I be able to access raw JSON POST data via the HTTP Listener then use the Choice flow control to execute conditions based on a value from a given JSON index. Anyone can show/tell me how to do this?

Answer 1

The JSON HTTP body will automatically become the payload of your message in Mule probably represented as Stream.

Just for demo purposes, try logging the payload after your http:listener using:

<object-to-string-transformer />

<logger level="INFO" message="#[payload]" />

There best way to query JSON is to transform it to a Map suing the JSON module transformers.

<json:json-to-object-transformer returnClass="java.util.HashMap" />

And then query it using MEL like standard MVEL or Java syntax.

For a JSON document like: {"person" : {"name" : "bob"}}

<logger message="#[payload.person.name]" level="INFO" />

You can use these expressions in your choic router also:

<choice>
   <when expression="#[payload.person.name == 'bob']">
      do something ...
   </when>
</choice>