代码详解

  //从连接池中取的连接对象
    public synchronized Connection getConnection()
    {
        Connection con = null;
        Context ct = null;
        try
        {
            ct = new InitialContext();
            DataSource ds = (DataSource)ct.lookup("java:comp/env/jdbc/meeting");
            con = (Connection)ds.getConnection();
        }catch(Exception ex)
        {
            System.out.print("Get Connection Error");
        }
        return con;
    }
你这段就是配置数据源