HttpUriRequest request = new HttpGet(url);
                HttpResponse response = httpClient.execute(request);
                if(response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
                    Logger.warn("Error response:" + response.getStatusLine().getStatusCode());
                    EntityUtils.consume(response.getEntity());
                    continue;
                }

 */
package org.codelibs.fess.exception;

public class WebApiException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    private final int statusCode;

    public int getStatusCode() {
        return statusCode;
    }

    public WebApiException(final int statusCode, final String message, final Throwable cause) {
        super(message, cause);
        this.statusCode = statusCode;
    }

        try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
            if (response.getStatusLine().getStatusCode() != Constants.OK_STATUS_CODE) {
                logger.error("Failed to access {}, code: {}.", url, response.getStatusLine().getStatusCode());
                return null;
            }

            data.setContent(EntityUtils.toString(response.getEntity(), Charsets.UTF_8));

                httpRequest = new HttpGet(buf.toString());
            }

            executor.accept(httpRequest, (response, entity) -> {
                final int httpStatusCode = response.getStatusLine().getStatusCode();
                if (httpStatusCode < 400 || httpStatusCode == 401) {
                    parseTokenPage(tokenPattern, responseParams, entity);
                } else {
                    String content;

        } catch (final WebApiException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a popularWord request.", e);
            }
            writeJsonResponse(e.getStatusCode(), e);
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a popularWord request.", e);
            }

                message = "[" + errorCode + "] Failed to access to Web API.";
                logger.warn(message, e);
            }
            response.sendError(e.getStatusCode(), message);
        }
    }

    protected void processRequest(final HttpServletRequest request, final HttpServletResponse response, final String path) {

            // get a content
            final HttpResponse response = executeHttpClient(httpGet);
            httpEntity = response.getEntity();

            final int httpStatusCode = response.getStatusLine().getStatusCode();
            if (httpStatusCode == 200) {

                // check file size
                final Header contentLengthHeader = response.getFirstHeader("Content-Length");