Google recaptcha response verifier server side

gistfile1.java

@Service
public class ReCaptchaResponseVerfier {

  @Resource
  private Environment environment;

  private static final Logger LOGGER = LoggerFactory.getLogger(ReCaptchaResponseVerfier.class);

  @Async
  public ListenableFuture<GoogleCaptchaResponseData> isCaptchaResponseValid(String captchaResponse) throws InterruptedException,
      ExecutionException {

    LOGGER.debug(" Validating captcha {}", captchaResponse);

    if (captchaResponse.isEmpty()) {
      GoogleCaptchaResponseData response = new GoogleCaptchaResponseData();
      response.setSuccess(false);
      response.setErrorCodes("The \"I am not a robot\" genie says you didn't verify, please do so.");
      return new AsyncResult<GoogleCaptchaResponseData>(response);
    }

    AsyncRestTemplate restTemplate = new AsyncRestTemplate();

    StringBuilder builder = new StringBuilder("https://www.google.com/recaptcha/api/siteverify?");
    builder.append("secret=").append(environment.getProperty("google.recaptcha.secret")).append("&response=")
        .append(captchaResponse);

    ListenableFuture<ResponseEntity<GoogleCaptchaResponseData>> futureResponse = restTemplate.exchange(builder
        .toString().trim(), HttpMethod.GET, null, GoogleCaptchaResponseData.class);

    GoogleCaptchaResponseData response;
    response = futureResponse.get().getBody();

    return new AsyncResult<GoogleCaptchaResponseData>(response);

  }

}

@JsonFormat
public class GoogleCaptchaResponseData implements Serializable {

  private static final long serialVersionUID = 5059754043870680072L;

  private boolean success;

  private String errorCodes;

  public boolean isSuccess() {
    return success;
  }

  public void setSuccess(boolean success) {
    this.success = success;
  }

  public String getErrorCodes() {
    return errorCodes;
  }

  public void setErrorCodes(String errorCodes) {
    this.errorCodes = errorCodes;
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("GoogleCaptchResponse [success=");
    builder.append(success);
    builder.append(", errorCodes=");
    builder.append(errorCodes);
    builder.append("]");
    return builder.toString();
  }

}