how to extract value from request in Jmeter

Question

Hi I am passing an email which is a time function like below

email = ${__time(MMddyy)}_${__time(HMS)}@yopmail.com

The value of this functi

Answer 1

1. Add a Beanshell PostProcessor as a child of the request which sends that POST request

2. Put the following code into the PostProcessor's "Script" area

   import org.apache.jmeter.config.Argument;
   import org.apache.jmeter.config.Arguments;
   
   Arguments argz = ctx.getCurrentSampler().getArguments();
   for (int i = 0; i < argz.getArgumentCount(); i++) {
       Argument arg = argz.getArgument(i);
       if (arg.getName().equals("email")) {
           vars.put("EMAIL", arg.getValue());
           break;
       }
   }
   

3. Refer generated value as ${EMAIL} where required.

Clarification:

• above code will extract the value of email request parameter (if any) and store it to EMAIL JMeter Variable
• ctx - shorthand to JMeterContext class instance
• vars = shorthand to JMeterVariables class instance
• Arguments and Argument - you can figure that out from JMeterContext JavaDoc

See How to use BeanShell: JMeter's favorite built-in component guide for more information on Beanshell scripting in JMeter.