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.

Answer 2

Is it HTTP Sampler? If so, just put into beanshell postprocessor:

String prevQuery = prev.getQueryString(); //your request text
System.out.println(prevQuery );

Also works for any samplers:

String prevQuery  = prev.getSamplerData();

Answer 3

You can use Regular Expression extractor to extract the e-mail address from the request URL.

Add Regular Expression Extractor as a child of sampler which sends the post request. In the Regular Expression Extractor select URL in Response Filed to check instead of Body.

You should be able to extract e-mail id from the request in this way.

Answer 4

Instead of the entire email, you can store the timestamp value in a variable and then use this timestamp variable to create email anywhere you want. This way you will can have same email every where.