JMeter Beginner Tutorial 21 - Correlation (with Regular Expression Extractor)

Today we will learn:
What is Correlation
Why is it required
How to use Regular Expression Extractor

Step 1 : Create a Test Plan where you want to do dynamic referencing in JMeter

Step 2 : Add Regular Expression Extractor in the Step from where response value(s) needs to be extracted

Step 3 : Refer the extracted value (referred by Reference Name) into a subsequent step

Step 4 : Run and validate

------------ PERFORMANCE TESTING ------------

________ ONLINE COURSES TO LEARN ________

------------ UI TESTING ------------

------------ API TESTING ------------

------------ MOBILE TESTING ------------

------------ CI | CD | DEVOPS ------------

------------ VERSION CONTROL SYSTEM ------------

------------ PROGRAMMING ------------

------------ IDE ------------

------------ MAVEN ------------

------------ OTHERS ------------

----------- Connect with Raghav ------------

You can support my mission for education by sharing this knowledge and helping as many people as you can

Never Stop Learning
Raghav

[sathishkumarbalasubramania]

Thanks Raghav for your time to teach JMeter and other technologies. Your teach the concepts very clearly and informative. Great.

[RajSharma-]

Hi Raghav, I have implemented performance test in my organization from scratch with the help of your Videos.
Thanks a lot for extremely helpful vdos.

[imranatpucit]

Raghav.
#GoodLesson #No19. Simple explanation.
Thanks

[ysriniva]

Thanks for the video. in bank projects they do not allow to put our response in third party or unknown sites . But the second option you mentioned in the jmeter itself (Regular expression) is quite useful.Thanks for sharing your knowledge.

[sonugunasekaran]

All Jmeter videos are useful and main advantage is understanding the concepts in a very short time.:-)

[kirankumarpinninty]

Hi Raghav, Nice way of explanation with example. Thanks a lot.

[LatinRemixes]

Muchisimas Gracias


I was looking for this !!!! Thank You so much!!!

[sumeshsuseelan]

Thank you so much bro ... your videos have helped me a lot :)

[sandeeprao]

Hi Raghava,


can you please help how to extract only 2.14.22.24 from the above content.

[sathishreddy]

Thanks for made video sir, it useful for me in my project

[ramareddybheemanagoud]

Nice explanation, thanks lot for nice content

[Userforsociety]

Hi Raghav . thanks for the videos. they are really helpful. what happens if we use only (.*) instead of (.*?) in regards exp extractor and need some more clarity on template field.

[Tapana]

Hi bro nice tutorial i love this .thanks

[NazCookingDelights]

Hi Raghav, Thank you for the wonderful lectures! I have a doubt, for websites which needs onetime authentication code from microsoft authenticator app(or OTP from mobile phones) along with the username and password, How can we do the load test for multiple users ? Please help i am getting failure on testing such login for multiple users, only first thread passess

[LayanSooriyaarachchi]

Hi Raghav,
Is there a way to pick the values from request body and pass them to next request/s by using regular expression or something else for REST web services?
(In this way we can pick values from response body and pass to next requests no)
Ex: a scenario like when generate random reference number from JMeter itself using a function and pass it to several request bodies

[rafishaik]

Hi Ragava, I am very thankfull you for this videos and i have small doubt, I want to run to different record scripts at a time with sequential way . any possible way

[orientchaloooreo]

hello everyone, I have two scenarios I want to know how can I test that using regular expression extractor.
1) When I have username/password and through that, I can access user's personal data like credit card info and billing details as I am testing a website (so no negative intentions)
2) if I don't have username/password then how can I use JMeter to get personal info?
P.S: I think the second one can be done through SQL injection. even though I don't know how but I think if someone could help me in that too that will be great.
Help please Thanks in Advance

[aishwaryakamaraj]

Thanks for the clear explanation sir 👍

[kalyanipatki]

Hi Raghav, Kindly guide for a case where I've to fetch value of a reg exp from a particular block in the page response.

[ronaldlaw]

Hi Raghav,

Great tutorial. Thanks.
Question: So, supposed that I have a set of regular expression variables, says, hyperLink_01, hyperLink_02, ... hyperLink_n. I would want to use them in a loop to says (for i =1, i > 3, i++; randamly select hyperLink_<number> for http sampler). How would can I achieve this goal?

Maybe there is a post processor I could use to write a script and transform the regular expression variables randomly to a new variable and parse it in the next http sampler. But I am not very familiar with extracting the variable from groovy.

Thanks,
-Ronald