public void addURL(URL url) {
		
		//ȷʼʱurlΪ
		if (getWorkloadWaiting().contains(url))
			return;
		if (getWorkloadError().contains(url))
			return;
		if (getWorkloadProcessed().contains(url))
			return;
		
		log("ӵݿ: " + url);
		getWorkloadWaiting().add(url);
		Date now = new java.util.Date();
		SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String date = dateformat.format(now);
		String urlStr = url.toString();
		String sqlstmt = "insert into test.link_info values(" + "0" + ",'"
				+ urlStr + "','" + date + "')";
       dao.saveData(stat, sqlstmt);
	}