1. 修改连接字符串

   String url = "jdbc:oceanbase://IP:端口/库名?连接参数";
   String username = "用户名";
   String password = "密码";    
   Connection conn = null;
   try {
       PreparedStatement ps = conn.prepareStatement("select to_char(sysdate,'yyyy-MM-dd HH24:mi:ss') from dual;");
       ResultSet rs = ps.executeQuery();
       if (rs.next()) {
           System.out.println("sysdate is:" + rs.getString(1));
       }
   } catch (Exception e) {
       e.printStackTrace();
   } finally {
       if (null != conn) {
           conn.close();
   

说明