Extracting JSON response

Gatling (Open-Source)
1

Using Firefox RESTClient gives me the response(body) attached as screenshot.
Wanting to save i.e the “scanNumber” in this response, how do I write that in Gatling?
I have tried

.check(jsonPath("//“scanNumber”:"").saveAs(“responsevar”)))

But get error:

14:14:36.019 [WARN ] i.g.h.a.AsyncHandlerActor - Request ‘Login page’ failed: jsonPath(“scanNumber”:"").exists failed, could not extract: could not extract : $' expected but ’ found

Is there a way to print to console (in i.e IntelliJ) the reponse I am getting in the Simulation? This would be helpful.

Given that I have managed to save the response “responsevar” above is there an easy way to also print this to console in i.e IntelliJ?

Magnus

2

And here is the screenshot.

Magnus

Sp user group extracting.jpg
Sp user group extracting.jpg1560×597 66.6 KB

3

Click on link on documentation and check the proper syntax.
JsonPath ≠ XPath

4

Looking at http://gatling.io/docs/2.0.0-RC5/http/http_check.html
this is still not clear to me.

Could you please elaborate? JSON is different from XPath, ok. But I miss a concrete example in the documentation.

Thanks,
Magnus

5

https://github.com/gatling/gatling/blob/master/gatling-core/src/test/scala/io/gatling/core/check/extractor/jsonpath/JsonPathExtractorSpec.scala

6

Right,
I did make this work:

.check(jsonPath(“$.resultCode”).is(“SUCCESS”)))

But this:

.check(jsonPath(“$.memberships.scanNumber”).saveAs(“scanNr”)))

returns:

jsonPath($.memberships.scanNumber).exists, found nothing 5 (100,0%)

I guess I am getting closer, do I need the .check ? It should find “something” looking at the JSON response again:

{"resultCode":"SUCCESS","errorCode":null,"errorMessage":null,"profile":{"fullName":"TestFirstName TestMiddleName TestLastName","memberships":[{"name":"UA Gold Partner","number":"123-456-123-123","scanNumber":"123-456-123-123"}]}}
7

memberships is an array : $.memberships[0].scanNumber

8

Still not working with:

.check(jsonPath("$.memberships[0].scanNumber").findAll.saveAs(“scanNr”)))

9

But this worked:

.check(jsonPath("$.profile.memberships[0].scanNumber").findAll.saveAs(“scanNr”)))

Thank you guys!

10

Woops : $.profile.memberships[0].scanNumber

For further info on JsonPath: http://goessner.net/articles/JsonPath/ (link is provided in the documentation).
You can also easily find online JSONpath expression testers.

11

Thanks,
is it a simple way to print the value of scanNumber saved as the variable “scanNr” in my question.
print to console in IntelliJ i.e.?

Cheers,
Magnus

12

Add a session lambda to your scenario to print your value stored in the session, after it’s set by your check:

exec(session => {
println(session(“scanNr”).as[String])
session
})