Kotlin for Enterprise Applications using Java EE

Writing a REST client for the POST /authorize/jwt/token API

Let's write a simple REST client for getting a JWT token. We use the Jersey client to write our integration test case. This actually makes an API call and gets the response. We write the getToken() function, where we instantiate the Jersey  client and invoke the API by passing the required headers, as follows:

fun getToken(): String {    val client = Client.create()    val webResource = client            .resource("http://localhost:8080/authentication-service/authorize/jwt/token")    val response = webResource            .header("Accept", "application/json")            .header("Content-Type", "application/json")            .header("UserId", "testUser")            .header("Password", "testUserPass")            .post<ClientResponse>(ClientResponse::class ...