WSO2 ESB 4.5.1: SOAP to JSON transformation issues - json

Question

So I´m trying to build a proxy based on a wsdl. This proxy will listen on hhtp/https and transform the incoming SOAP message into JSON sending it over JMS to the end-point. And of course the way back that is from JSON to SOAP needs to be considered as well.
Can somebody please help me how to do that. I´ve tried sample 440 on ESB 4.5.1 just switching the "in_transform" with "out_transform", also some other recipes found here in stackoverflow but none of them seems to do the job. In all cases I get an empty JMS message at the end-point.
Here´s a copy of my proxy
<proxy xmlns="http://ws.apache.org/ns/synapse" name="Tarjetas" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
<target>
<inSequence>
<log level="full"/>
<property name="messageType" value="application/json" scope="axis2"/>
</inSequence>
<outSequence>
<log level="full"/>
<xslt key="out_transform"/>
<property name="messageType" value="text/xml" scope="axis2"/>
<send/>
</outSequence>
<endpoint>
<address uri="jms:/FORTALEZA.BRIDGE.MOBILE.QUEUE?transport.jms.ConnectionFactoryJNDIName=QueueConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=queue"/>
</endpoint>
</target>
<publishWSDL uri="file:repository/wsdl/Debito.wsdl"/>
<description></description>
</proxy>
and here´s my localEntry for out_transform
<localEntry key="out_transform">
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fn="http://www.w3.org/2005/02/xpath-functions"
xmlns:m0="http://services.samples"
version="2.0"
exclude-result-prefixes="m0 fn">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="*">
<xsl:element name="{local-name()}" namespace="http://services.samples">
<xsl:copy-of select="attribute::*"/>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
</localEntry>
and I´m using the following within axis2.xml
<messageFormatter contentType="application/json"
class="org.apache.axis2.json.JSONStreamFormatter"/>
<messageBuilder contentType="application/json"
class="org.apache.axis2.json.JSONStreamBuilder"/>
I really appreciate all the help I can get.

Answer 1

You need to use the following message formatter and message builder in the axis2.xml
<messageFormatter contentType="application/json"
class="org.apache.axis2.json.JSONMessageFormatter"/>
<messageBuilder contentType="application/json"
class="org.apache.axis2.json.JSONBuilder"/>
You can use the StreamFormatter when you are building the JSON message using a script mediator. Otherwise the above formatter/builder would work for your requirement. You need to comment out the StreamFormatters which you have uncommented.