How to use User Defined Variables in Apache JMeter

In order to define your own variables and reuse them in your tests, it’s easier to use the User Defined Variables from JMeter.

Here is how to create a variable and use it in an HTTP Request from your JMeter Test Plan.

Steps

1. Open JMeter (here is a more detailed post on how to install JMeter) and Add a Thread Group to your Test Plan

2. Add a HTTP Request Sampler to your Thread Group

3. Right-Click the Thread Group and add User Defined Variables Config Element in your JMeter test

4. Create a new variable: var1 with value www.example.com

5. Go to the HTTP Request and add the variable name where you want to be replaced with its value, use ${var1}