Extracting javascript variable and passing to next Jmeter request

Question

The Response data look like following within Script tag

var csrfParam = 
      "SKtEMgZtO0H8EYHkAZIQ4tcS5bC8jKrD=y2G5Of06jgHbkNdHNleFKiXoBMC62veD";
var securityTokenName =  "SKtEMgZtO0H8EYHkAZIQ4tcS5bC8jKrD";
var securityTokenValue =  "y2G5Of06jgHbkNdHNleFKiXoBMC62veD";

I'm using regular expression extractor as following:

Reference name :  MYREF 
Regular Expression : securityTokenName ="(.+?)" securityTokenValue="(.+?)"
Template :           $1$$2$

I'm access this variable in next Jmeter request to build the URL:

${MYREF_g1}  
${MYREF_g2}

Expecting to get MYREF_g1 =SKtEMgZtO0H8EYHkAZIQ4tcS5bC8jKrD
and MYREF_g2 =y2G5Of06jgHbkNdHNleFKiXoBMC62veD
But THIS is not working .

Any help would appreciated!

My suggestion is first you check with first regex securityTokenName = "(.*)" & print the value using bean shell script(use beanshell post processor) log.info(vars.get("REGEX_REF")); if its work fine go to second. — Nithin CV
securityTokenName = "(.*)" is not returning any matches. and thats the issue I'm facing . I'm not sure if Jmeter doesn not see this since its part of javascript? — nprs
Can you please check the space part between '=' and (.*) in securityTokenName = "(.*)" regex because you may not considered space part in regex. Try a wildcard test with regex securityTokenName"(.*)", If = "SKtEMgZtO0H8EYHkAZIQ4tcS5bC8jKrD is coming as output jmeter is working fine otherwise it may have another issue. — Nithin CV
Isn't there another way of doing this without using the Regular Expression Extractor in JMeter? I know SoapUI has a few ways. — djangofan

Dmitri T Dmitri T · Accepted Answer · 2014-03-03T12:40:49

It looks like that you're misunderstanding what groups and templates are.

As per Using RegEx (Regular Expression Extractor) with JMeter

Template. The template used to create a string from the matches found. This is an arbitrary string with special elements to refer to groups within the regular expression. The syntax to refer to a group is: '$1$' to refer to group 1, '$2$' to refer to group 2, etc. $0$ refers to whatever the entire expression matches. So, if you have in response word “economics” and search for regular expression “(ec)(onomics)” and apply template $2$$1$ than in output variable you will receive “onomicsec”.

So your RegEx should look like:

var securityTokenName = "(.+?)"; var securityTokenValue = "(.+?)";

So

securityTokenName will be stored in JMeter Variable MYREF_g1
securityTokenValue will be stored in JMeter Variable MYREF_g2

View Results Tree Listener has built-in RegExp Tester on ResponseData tab. You can also use Debug Sampler to see what variables have been set by your Regular Expression Extractor.

Extracting javascript variable and passing to next Jmeter request

2 Answers