스프링 Rest Template

        RestTemplate restTemplate = new RestTemplate();
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.set("myheader",token);
        HttpEntity<String> request = new HttpEntity<>(payload, httpHeaders);
        ResponseEntity<String> response = restTemplate.postForEntity(dppURI + "/api/pay/full", request, String.class);
        return response;