小编Mar*_*tin的帖子

当在 jbdevstudio 中启动一个新的 Java EE (maven) web 应用程序时，已经包含了一些代码，包括带有注册的 Member 模型。在 MemberRepository 类中，有两种方法以这种方式使用条件查询：

public Member findByEmail(String email) {
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
    Root<Member> member = criteria.from(Member.class);
    // Swap criteria statements if you would like to try out type-safe criteria queries, a new
    // feature in JPA 2.0
    // criteria.select(member).where(cb.equal(member.get(Member_.name), email));
    criteria.select(member).where(cb.equal(member.get("email"), email));
    return em.createQuery(criteria).getSingleResult();
}

public List<Member> findAllOrderedByName() {
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Member> criteria = cb.createQuery(Member.class);
    Root<Member> member = criteria.from(Member.class);
    // Swap criteria statements if you …