Jdbc获取oracle中guid主键

上代码

String sql = "BEGIN  insert into itil_task_plan (PLAN_CODE)  values (?) returning id into ?; END;";

CallableStatement ps = conn.prepareCall(sql);

ps.setString(1, taskPlan.getPlanCode());

            

ps.registerOutParameter(2, Types.VARCHAR);

row = ps.executeUpdate();

String zhujian = ps.getString(2);

zhujian就是主键，用

CallableStatement