Extract JSON response in JMeter - json

Question

I am using JMeter and I want to extract a particular value from a JSON response and use this value in subsequent request. I have the JSON Extractor Plugin installed but I am able to drill down to the JSON value.
Below is an example JSON response captured from JMeter.
while(1);
{
: "results":
: [
: : {
: : : "permissions":
: : : [
: : : ],
: : : "exchangeId":"5wFrZHS8Obbw_JJOsaxy7A",
: : : "documentIncomplete":false,
: : : "dateCreated":1453718307090,
: : : "finalized":false,
: : : "voided":false,
: : : "certified":false,
: : : "dateModified":1453718307090,
: : : "metaData":
: : : [
: : : ],
: : : "documentCreated":false,
: : : "orphaned":false,
: : : "dynamicName":false,
: : : "description":"",
: : : "mode":"ADHOC",
: : : "state":"WITHOUT_DOCUMENT",
: : : "name":"01/25/2016 10:38:21",
: : : "priority":"C"
: : }
: ],
: "responseTime":1453718307090
}
I've tried the below but still can't get the exchangeId:
$.permissions[2].exchangeId
$.while..exchangeId
$.permissions.exchangeId
$.results.permissions.exchangeId
$.while.results.permissions.exchangeId
$.while.results[*].permissions.exchangeId
$.while.results[1].permissions[0].exchangeId
Am I doing something wrong here? Any help here is appreciated, I tried searching and couldn't find anything that relates to my problem.

Answer 1

This is not a valid JSON, go for Regular Expression Extractor instead, the relevant configuration would be:
Reference Name: anything meaningful, i.e. exchangeId
Regular Expression: "exchangeId":"(.+?)"
Template: $1$
You will be able to access extracted value as ${exchangeId} where required.
Demo:
References:
Regular Expressions
Using RegEx (Regular Expression Extractor) with JMeter