How get access_token from body for use in another method - scala

Question

Good afternoon. Slightly confused in the Gatling documentation, I can not find a solution. I want to get a token to use in another method as a header. Here is an example of the first method where I get a token:
exec(
http("HTTP Request auth")
.post("http://blabla:9001/connect/token")
.header("Content-Type","application/x-www-form-urlencoded")
.formParam("grant_type","password")
.formParam("username", "${login}")
.formParam("password", "${password}")
.formParam("client_id","ro.client")
.formParam("client_secret","secret")
.check(status is 200)
.check(header("access_token").saveAs("access_token"))
.check(header("token_type").saveAs("token_type"))
)
Here's the second method, where I want to pass the token:
.exec(
http("HTTP Request createCompany")
.post("/Companies/CreateCompany")
.header("Authorization","${token_type} + ${access_token}")
.check(status is 200)
)
As a result, writes that a token was not found:
Request:
HTTP Request auth: KO header(access_token).find(0).exists, found nothing
But then he writes:
body={"access_token":"7e8c1d997dd92f16a87fa7ffb8a88ab14eb05a8883d78fe8652d072f24b5ca4a","expires_in":31536000,"token_type":"Bearer"}
I guess I find it wrong here:
.check(header("access_token").saveAs("access_token"))
.check(header("token_type").saveAs("token_type"))

Answer 1

The body of the first request is a Json payload, you need to use jsonPath, which is like XPath for Json:
.check(jsonPath("$.access_token").saveAs("access_token"))
.check(jsonPath("$.token_type").saveAs("token_type"))
Also, the header of the second request will print as:
.header("Authorization", "${token_type} + ${access_token}")
=> Authorization: Bearer + 7e8c1d997dd92f16a87fa7ffb8a88ab14eb05a8883d78fe8652d072f24b5ca4a
Unless you really want the extra +, the right header construction might be:
.header("Authorization", "${token_type} ${access_token}")

Answer 2

One way is to do like this ->
exec { session => var access_token ='' ;
your exec code
session.setAll( "token_type" -> access_token );
}
Then token_type is available to use.