JSON: How to log a JSON object value from a vxml? - json

Question

My aim is to log a JSON object value fethed from a jsp file from the vxml. Is there any way to do that. I see that there is a function called JSON.stringify but thats giving me nothing as a log.
Below is my code:
<?xml version="1.0"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">
<var name="userId" expr="1" />
<!--form id="get_location"-->
<data name="userData" method="get" src="http://localhost:5000/userLocation.jsp" nameList="userId" />
<property name="inputmodes" value="dtmf"/>
<menu id="menuZero">
<choice dtmf="1" next="#choice1"/>
<choice dtmf="2" next="#choice2"/>
</menu>
<!--/form-->
<form id="choice1">
<block>
<if cond="userData.HttpResponse.do_queryResponse[&apos;return&apos;].errorMsg.result_code != &apos;0&apos;">
<goto next="welcome.vxml"/>
<else/>
<goto next="welcome.vxml"/>
</if>
</block>
</form>
<form id="choice2">
<block>
<log expr="JSON.stringify(userData.HttpResponse)"/>
</block>
</form>
</vxml>

Answer 1

Maybe, VoiceXML is not supported "JSON.stringify".
Try to get "json2.js" and add code.
<script src="json2.js" />
For example,
<?xml version="1.0" encoding="UTF-8"?>
<vxml
version="2.0"
xmlns="http://www.w3.org/2001/vxml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
<script src="json2.js" />
<var name="messageObject" expr="{keyA:'valueA',keyB:'valueB',keyC:'valueC'}" />
<form>
<block><prompt>Write Log!</prompt></block>
<block><log expr="JSON.stringify(messageObject)"/></block>
</form>
</vxml>
I tested this code on "Voxeo Prophecy 13".

Answer 2

I tried json2.js as described above and I had the same issue, 'assignment to undeclared variable JSON'. To fix this, I just declared in the same file (json2.js):
var JSON;
Then it worked properly. In the vxml:
<script><![CDATA[
prueba = new Object();
prueba.pepito = 1234;
prueba.OtraPrueba = "lalalapepe";
]]></script>
<log label="IVB_HISTORY">
<value expr="JSON.stringify(prueba)"/>
</log>
It gets logged as followed:
{"pepito":1234,"OtraPrueba":"lalalapepe"}
I'm using Convergy's InVision Studio