if (logger.isTraceEnabled()) {
                LogStream.setLevel(4);
            } else if (logger.isDebugEnabled()) {
                LogStream.setLevel(3);
            } else if (logger.isWarnEnabled()) {
                LogStream.setLevel(2);
            } else if (logger.isErrorEnabled()) {
                LogStream.setLevel(1);
            } else {
                LogStream.setLevel(0);
            }

        if (e.isDebugEnabled()) {
            logger.debug("Crawling Access Exception at {}", urlQueue.getUrl(), e);
        } else if (e.isInfoEnabled()) {
            logger.info(e.getMessage());
        } else if (e.isWarnEnabled()) {
            logger.warn("Crawling Access Exception at " + urlQueue.getUrl(), e);
        } else if (e.isErrorEnabled()) {
            logger.error("Crawling Access Exception at " + urlQueue.getUrl(), e);
        }

                        if (bs.length != 0) {
                            logger.info(new String(bs, outputEncoding));
                        }
                    }
                    if (logger.isWarnEnabled()) {
                        final byte[] bs = errStream.toByteArray();
                        if (bs.length != 0) {
                            logger.warn(new String(bs, outputEncoding));
                        }