private Conn createConnection(DbPoolConfig singleConfig) {
		Connection con = null;
		try {
			if(MyStringUtil.isBlank(singleConfig.getUser())){
				con = DriverManager.getConnection(singleConfig.getUrl());
			}else{
				con = DriverManager.getConnection(singleConfig.getUrl(), singleConfig.getUser(), singleConfig.getPassword());
			}
			System.out.println("连接池" + singleConfig.getName() + "创建一个新的连接");
		}catch(SQLException e){
			System.out.println("无法创建下列URL的连接: " + singleConfig.getUrl() + " user: " + singleConfig.getUser() + " pd: " + singleConfig.getPassword());
			return null;
		}
		
		return new Conn(con,singleConfig.getType());
	}