Jmeter extract data using BeanShell PreProcessor and add parameters

Question

Having the following request:

From this I extract using the Regular Expression Extractor the following string:

%5B1172%2C63%2C61%2C66%2C69%2C68%5D

I decode this using the urldecode function: ${__urldecode(${Groups_g2})}

Decoded: [1172,63,61,66,69,68]

On the following request I want to extract the values using the BeanShell PreProcessor to obtain a list of parameters like this one:

I know that I have to use sampler.addArgument but i can't figure how to extract data from the list and add the values as parameters.

Answer 1

Try the following:

1. Put ${__urldecode(${Groups_g2})} into Beanshell PreProcessor's Parameters input field

2. Enter the following code into Script area

   String params = Parameters.substring(1, Parameters.length() - 1); // remove square brackets
   int counter = 1;
   for (String param : params.split(",")) { 
     sampler.addArgument("parameter" + counter, param);
     counter++;
   }
   

I have no idea what parameter names need to look like, hopefully above information will be helpful.

HTTP Request with no parameters:

Beanshell PreProcessor

Parameters in View Results Tree Listener

For more information on Beanshell scripting in Apache JMeter check out How to use BeanShell: JMeter's favorite built-in component guide.