public class RequestHeaderChangeDemo { private final RequestSpecification request; public RequestHeaderChangeDemo(String baseUrl) { RestAssured.baseURI = baseUrl; request = RestAssured.given(); request.header("Content-Type", "application/json"); } public void authenticateUser(AuthorizationRequest authRequest) { Response response = request.body(authRequest).post(Route.generateToken()); if (response.statusCode() != HttpStatus.SC_OK) throw new RuntimeException("Authentication Failed. Content of failed Response: " + response.toString() + " , Status Code : " + response.statusCode()); Token tokenResponse = response.body().jsonPath().getObject("$", Token.class); request.header("Authorization", "Bearer " + tokenResponse.token); } public IRestResponse<Products> getProducts() { Response response = request.get(Route.products()); return new RestResponse(Products.class, response); } public IRestResponse<UserAccount> addProduct(AddProductsRequest addProductsRequest) { Response response = request.body(addProductsRequest).post(Route.products()); return new RestResponse(UserAccount.class, response); } public Response removeProducts(RemoveProductRequest removeProductRequest) { return request.body(removeProductRequest).delete(Route.product()); } }