Performance Testing with JMeter 3 - Third Edition

Reading JSON data

Now that we know how to post JSON data, let's take a brief look at how to consume them in JMeter. Depending on the use case, you may find yourself dealing more with reading JSON than posting them. JMeter provides a number of ways to digest this information, store them if needed, and use them further down the chain in your test plans. Let's start with a simple use case. The example website has a link that provides usage of the last 10 entries of persons stored on the server. It can be reached by visiting http://sampleapp.jmeterbook.com/person/list.

If we were to process the JSON response and use the first and last name further down the chain, we can use a Regular Expression Extractor PostProcessor to extract these. Let's ...