unirest代码看起来像

HttpResponse<String> response = Unirest.get("url")
  .header("Accept", "application/json")
  .header("X-WMI", "code")
  .asString();

相应的restemplate代码编写如下

HttpHeaders headers = new HttpHeaders();
            headers.set("X-WMI", wmi);
            headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
            headers.set("Content-Type", "application/json");
            HttpEntity<HttpHeaders> entity = new HttpEntity<>(headers);

            UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);
            ResponseEntity<String> response = this.restTemplate.exchange(
                    builder.toUriString(), HttpMethod.GET, entity, String.class);
            return response.getBody();

检查了这些数值，它们看起来完好无损。
有人能告诉我哪里不对吗。