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在hql中写sql 获值
阅读量:99 次
发布时间:2019-02-25

本文共 1645 字,大约阅读时间需要 5 分钟。

Hibernate ??????????????? ORM ????????????????? SQL ??????????????????????????? Hibernate ????????? SQL ???????????

??????

????????????????? Hibernate ? HQL (Hibernate Query Language) ???? SQL ?????????????? ["a", "b", "c", "d"]??????????????????????????????????????????

????????

??????????????????????

  • ????????????? Object ? String?List ? Array ???????????????????????

  • ???????????????????? Object ????????? String?List ? Array ????? Hibernate ? ORM ???????????????????

  • ??????

    ??????????????????

  • ????????????????????????????????????????????????????????????????????????????

  • ???? SQL ???? Hibernate ? HQL ?????? SQL ???????????? Hibernate?????????????????????? SQL ??????????????????

    @SuppressWarnings("unchecked")public List
    findAllUsers() { List
    userDetails = new ArrayList<>(); Session session = sessionFactory.openSession(); try { List
    users = (List) session.createCriteria(User.class).addCriteria(Criteria.createAlias("userRoles", "role")).iterate(); for (Object user : users) { User u = (User) user; userDetails.add(u.getLoginName()); } session.close(); } catch (Exception e) { e.printStackTrace(); } return userDetails;}
  • ????????????????? Thymeleaf???? #list ???????????????????????????

    ???:

    ??????????????????????????????????????????

  • ??????

    ????????????? Hibernate ??????????????????? SQL????????????????? DAO ????????????????????

    ??????

  • ?????????????????????????????????????????

  • ?? SQL ???????? SQL ???????? SQL ????????????????

  • ????????????????????????????????????????????????

  • ???????????? Hibernate ???????????????????

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