Get and set access token through Jmeter

Question

I am new in JMeter. I am trying to set access token dynamically through "Regular Expression Extractor". Basically I am trying to first login and then from it's response , I am trying to get access token and set it in "CreatePost" API.

I am able to get access token using #1 Login API where response is as below.

{ "Message": "Login successfully.", "Status": "Success", "HttpStatus": 200, "Data": { "token_type": "Bearer", "expires_in": 10000, "access_token": "eyJ0eXAiE", "refresh_token": "2bcf1f455f2", "name": "jmeter_test", } }

Could you please help me to get access_token from above response. To get this , I have created "Regular Expression Extractor " and set

Name of Createdvariable :  access_token,
Regular Expression:        "access_token": "value"
Template                   $1$
Match No.                  1

Could yo please check the regular expression?

Thanks in advance.

See stackoverflow.com/questions/45670768/… or stackoverflow.com/questions/45670768/… — user7294900
Use JSON Path PostProcessor as expression: $.access_token OR $..access_token. — Yugal

Dmitri T Dmitri T · Accepted Answer · 2020-01-28T09:51:41

If you really need to use the regular expression extractor you need to amend your regular expression to look like:

"access_token":\s+"(\w+)"

where:

(\w+) matches any number of aplhanumeric characters
\s+ matches optional whitespace character

Demo:

More information:

However for JSON responses it makes sense to use JSON Extractor which allows executing arbitrary JsonPath queries to get "interesting" data from the JSON responses, the relevant JsonPath expression will be:

$..access_token

where:

.. is "deep scan" operator, it will find the search term anywhere in the data
access_token - the JSON attribute you're looking for

More information: API Testing With JMeter and the JSON Extractor

Get and set access token through Jmeter

2 Answers