public static void addParent() throws InterruptedException { // 写死
        Date insertTime = new Date();
        Parent parent = new Parent();
        parent.fullName = "新增家长";
        parent.fullNamePinyin = "xin zeng jia zhang";
        parent.save();//往数据库里面存入一条数据
        List<Long> idFromDB = methodForDocs.getParentList(insertTime);//紧接着从数据库里面取出该条数据（更具createTime字段）

        System.out.println("idFromDBSize:" + idFromDB.size());
        for (int i = 0; i < idFromDB.size(); i++) {
            System.out.println("***idFromDB:" + idFromDB.get(i));
        }
        renderJSON(new Result("测试通过！"));
    }

（该方法是没有问题的）
public static List<Long> getParentList(Date insertTime) {
        String hql = "select id from Member where createTime>?";
        System.out.println("insertTime:" + insertTime.toString());
        List<Long> ids = Member.find(hql, insertTime).fetch();
        return ids;
    }