How to pull the token from Get request's response and input the same to Post request in JMeter for Rest API?

Question

I am a beginner in JMeter, trying to perform load test to my Rest API. First, the Get request gets the access_token as below:

Then the following Post request runs with that authorization token to produce the Json, but I am missing something so the Post Request is failing as Authentication denied as below,

Added the Regular expression extractor to extract the token from the Get request's response as below:

Then storing it in the HTTP Header Manager in a variable as below

I am missing to link the value to the Post request, I dont know how to do it, please help.

Answer 1

In header manager, instead of access_token, the header name should be Authorization. Please reconfirm this with developer team / retry this same request in postman

The regex expression used should look something like this "access_token":"(.*?)"

Also, another pro tip: because the response to getToken api call is JSON, you can use JSON Post Processor to extract the access_token by saying something like $.access_token. It is much clean way to process JSON object.