} else if (Constants.SEARCH_LOG_ACCESS_TYPE_WEB.equals(searchLog.getAccessType())) {
                sessionId = searchLog.getClientIp();
            } else {
                sessionId = searchLog.getClientIp() + '_' + searchLog.getSearchWord();
            }

            final LocalDateTime requestedAt = searchLog.getRequestedAt();

                    appendJson("roles", entity.getRoles(), buf).append(',');
                    appendJson("user-agent", entity.getUserAgent(), buf).append(',');
                    appendJson("client-ip", entity.getClientIp(), buf).append(',');
                    appendJson("access-type", entity.getAccessType(), buf).append(',');
                    appendJson("query-time", entity.getQueryTime(), buf).append(',');

                response.contentType(mimeType + "; charset=" + charset);
                return;
            }
        }
        response.contentType(mimeType);
    }

    public String getClientIp(final HttpServletRequest request) {
        final String value = request.getHeader("x-forwarded-for");
        if (StringUtil.isNotBlank(value)) {
            return value;
        }