protected static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";

    protected static final String ACCESS_CONTROL_ALLOW_HEADERS = "Access-Control-Allow-Headers";

    protected static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods";

    protected static final String ACCESS_CONTROL_ALLOW_PRIVATE_NETWORK = "Access-Control-Allow-Private-Network";

    /** The key of the configuration. e.g. * */
    String API_CORS_ALLOW_ORIGIN = "api.cors.allow.origin";

    /** The key of the configuration. e.g. GET, POST, OPTIONS, DELETE, PUT */
    String API_CORS_ALLOW_METHODS = "api.cors.allow.methods";

    /** The key of the configuration. e.g. 3600 */
    String API_CORS_MAX_AGE = "api.cors.max.age";

        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_ORIGIN, origin);
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_METHODS, fessConfig.getApiCorsAllowMethods());
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_HEADERS, fessConfig.getApiCorsAllowHeaders());
        httpResponse.addHeader(ACCESS_CONTROL_MAX_AGE, fessConfig.getApiCorsMaxAge());
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_CREDENTIALS, fessConfig.getApiCorsAllowCredentials());

    protected String rolePrefix = "{role}";

    protected String groupPrefix = "{group}";

    protected String userPrefix = "{user}";

    protected String allowPrefix = "(allow)";

    protected String denyPrefix = "(deny)";

    @Resource
    protected SystemHelper systemHelper;

    public String encode(final String value) {
        if (StringUtil.isBlank(value)) {

        @SuppressWarnings("unchecked")
        List<String> list = (List<String>) propMap.get(CORS_ALLOW_ORIGIN);
        if (list == null) {
            list = split(getApiCorsAllowOrigin(), "\n")
                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).collect(Collectors.toList()));
            propMap.put(CORS_ALLOW_ORIGIN, list);
        }
        return list;
    }