# Get auth token with one user from one url and use it with multiple users to test another url **URL:** \ **Category:** Gatling (Open-Source)\ **Created:** [March 17, 2024, 10:38pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816 "2024-03-17T22:38:08Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![amidavidw](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@amidavidw](https://community.gatling.io/u/amidavidw)\ **Post date:** [March 17, 2024, 10:38pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/1 "2024-03-17T22:38:08Z")
Hi, I’d like to use gatling for the following scenario: 1. Get the jwt token from one url, for example, [abc.com](http://abc.com), in one scenario 2. Use it in another scenario to test another url, for example [def.com](http://def.com), in another scenario How to do that? I tried as the code snippet below, but it does not work. Got the error: `'Get all books' failed to execute: No attribute named 'jwtToken' is defined` ```java List jwt = new ArrayList<>(1); // Http Configuration HttpProtocolBuilder bookStore = http .baseUrl("https://abc.com/api") .acceptHeader("application/json").contentTypeHeader("application/json"); HttpProtocolBuilder auth = http .baseUrl("https://def.com") .acceptHeader("application/json").contentTypeHeader("application/x-www-form-urlencoded"); // HTTP CALLS ChainBuilder authenticate = exec(http("Authenticate") .post("/oauth/token") .formParam("client_id", "abc") .formParam("client_secret", "def") .formParam("grant_type", "client_credentials") .formParam("request_type", "token") .check(jmesPath("token").saveAs("jwtToken")) .check(status().is(200))) .exec(session -> { jwt.add(session.getString("jwtToken")); System.out.println("JWT: " + jwt); return session; }); ChainBuilder getAll = exec( http("Get all books") .get("/books") .header("Authorization", "Bearer #{jwtToken}")); ChainBuilder create = exec(http("Create book").post("/books") .header("Authorization", "Bearer #{jwtToken}") .body(ElFileBody("book.json")).asJson() .check(status().is(201))); ScenarioBuilder scnAuth = scenario("Auth") .exec(authenticate); ScenarioBuilder scn = scenario("Book Store Test") .exec(s -> { System.out.println("JWT to use: " + jwt.get(0)); s.set("jwtToken", jwt.get(0)); return s; }) .exec(getAll) .exec(create); setUp(scnAuth.injectOpen(atOnceUsers(1)).protocols(auth).andThen(List.of( scn.injectOpen(nothingFor(5), rampUsers(20).during(30)) .protocols(bookStore)))); ``` ---
**Author:** ![trinp](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/trinp/32/1593_2.png) [@trinp](https://community.gatling.io/u/trinp)\ **Post date:** [March 18, 2024, 12:51am UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/2 "2024-03-18T00:51:09Z")
There is an old question relating about this behavior, check it out: > ---
**Author:** ![sbrevet](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/sbrevet/32/830_2.png) [@sbrevet](https://community.gatling.io/u/sbrevet)\ **Post date:** [March 18, 2024, 7:42am UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/3 "2024-03-18T07:42:18Z")
Hi @amidavidw, Welcome aboard! You can check the solution proposed by @GeMi: [Token Refresh - Java - Example](https://community.gatling.io/t/token-refresh-java-example/7935) . Does that suit your use case? Cheers! ---
**Author:** ![amidavidw](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@amidavidw](https://community.gatling.io/u/amidavidw)\ **Post date:** [March 18, 2024, 10:10pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/4 "2024-03-18T22:10:57Z")
Hi @trinp, @sbrevet, Thanks a lot for your help. I got it working 😄 After checking both of the solutions recommended, I noticed that the code snippet in my post is very similar to GeMi’s solution. The fix is to replace ```java ScenarioBuilder scn = scenario("Book Store Test") .exec(s -> { System.out.println("JWT to use: " + jwt.get(0)); s.set("jwtToken", jwt.get(0)); return s; }) .exec(getAll) .exec(create); ``` with ```java ScenarioBuilder scn = scenario("Book Store Test") .exec(s -> s.set("jwtToken", jwt.get(0))) .exec(getAll) .exec(create); ``` What is the difference between these two `.exe(...)` ? Should we always use `.exec(s -> s.set(...))` before and `.exec(s -> { ... return s;})` after the execution of the chanbuilder? Thanks again! ---
**Author:** ![amidavidw](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@amidavidw](https://community.gatling.io/u/amidavidw)\ **Post date:** [March 18, 2024, 10:12pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/5 "2024-03-18T22:12:17Z")
Hi @GeMi Sorry, only two mentions allowed in one post. Please check my reply above. Thank you ---
**Author:** ![GeMi](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/gemi/32/939_2.png) [@GeMi](https://community.gatling.io/u/GeMi)\ **Post date:** [March 18, 2024, 10:23pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/6 "2024-03-18T22:23:19Z")
From: > **[Session API](https://docs.gatling.io/reference/script/core/session/api/#setting-attributes)** > > How to store and fetch data programmatically for your virtual users' Session, typically when using functions. See below: ![image](https://europe1.discourse-cdn.com/flex013/uploads/gatling2/original/2X/2/215b7c8e046f9d0864c75a68fe4361b561420cf0.png) ---
**Author:** ![amidavidw](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@amidavidw](https://community.gatling.io/u/amidavidw)\ **Post date:** [March 18, 2024, 10:29pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/7 "2024-03-18T22:29:04Z")
I see. Thank you very much ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/gatling2/original/2X/b/b148e0742de35c6280726cabf3ecd3de2d320f63.png) [@system](https://community.gatling.io/u/system)\ **Post date:** [April 17, 2024, 10:29pm UTC](https://community.gatling.io/t/get-auth-token-with-one-user-from-one-url-and-use-it-with-multiple-users-to-test-another-url/8816/8 "2024-04-17T22:29:26Z")
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