final String proxyUsername = fessConfig.getHttpProxyUsername();
            final String proxyPassword = fessConfig.getHttpProxyPassword();
            if (proxyUsername != null && proxyPassword != null) {
                paramMap.put(HcHttpClient.PROXY_CREDENTIALS_PROPERTY, new UsernamePasswordCredentials(proxyUsername, proxyPassword));
            }

        }
    }

            final String proxyUsername = paramMap.get(CRAWLER_WEB_PREFIX + "proxyUsername");
            final String proxyPassword = paramMap.get(CRAWLER_WEB_PREFIX + "proxyPassword");
            if (proxyUsername != null && proxyPassword != null) {
                factoryParamMap.put(HcHttpClient.PROXY_CREDENTIALS_PROPERTY, new UsernamePasswordCredentials(proxyUsername, proxyPassword));
            }
        } else {

            // proxy credentials
            if (paramMap.get(Param.Client.PROXY_USERNAME) != null && paramMap.get(Param.Client.PROXY_PASSWORD) != null) {
                paramMap.put(HcHttpClient.PROXY_CREDENTIALS_PROPERTY, new UsernamePasswordCredentials(
                        paramMap.remove(Param.Client.PROXY_USERNAME).toString(), paramMap.remove(Param.Client.PROXY_PASSWORD).toString()));
            }
        } else {