How can I get authorization token in rest API using rest assured? Is it possible?

Question

Currently using Postman I have to do post request to API_URL/login and I pass username and password and in return i get token see below:

Example Request:

/login
POST
Body
{
    "username": "admin",
    "password": "admin"
}
Return
{
    "token": "1234-56789-..."
}

Can you tell me how would I do .. i tried using .parameters but it says deprecated...

Answer 1

You'd have to know what the schema is of the response. For instance, if the output is like thus:

{
    "success": true,
    "authorization_token": "eyJ0eXAiOiJCZWFy...",
    "refresh_token": "eyJ0eXAiOiJCZWFyZ...",
    "type": "Bearer",

    ...
}

Knowing the schema, you can extract the entire output and parse through it, like thus:

import io.restassured.response.Response;

Response response =  
        RestAssured.given().
            header("Content-Type", "application/json").
            body(loginPayload).
        when().
            post("/login").
        then().
            log().ifError().
            statusCode(200).
            contentType("application/vnd.api+json").
            body("$", hasKey("authorization_token")).                                   //authorization_token is present in the response
            body("any { it.key == 'authorization_token' }", is(notNullValue())).        //authorization_token value is not null - has a value
        extract().response();

The auth token could then be set to a string variable

String auth_token = response.path("authorization_token").toString();

extract().response(); returns the entire reponse, but you could change this to extract().path("authorization_token") for just single string