Enable CORS in Spark Java to allow origins *

Enable CORS in Spark Java

options("/*",
        (request, response) -> {

            String accessControlRequestHeaders = request
                    .headers("Access-Control-Request-Headers");
            if (accessControlRequestHeaders != null) {
                response.header("Access-Control-Allow-Headers",
                        accessControlRequestHeaders);
            }

            String accessControlRequestMethod = request
                    .headers("Access-Control-Request-Method");
            if (accessControlRequestMethod != null) {
                response.header("Access-Control-Allow-Methods",
                        accessControlRequestMethod);
            }

            return "OK";
        });

before((request, response) -> response.header("Access-Control-Allow-Origin", "*"));