JpaUserRepository.java 文件源码

@Override
public UserEntity findByEmail(String email) {
    Query query = em.createQuery("select u from user u where u.email = :email");
    query.setParameter("email", email);

    try {
        Object queryResult = query.getSingleResult();
        return (UserEntity) queryResult;
    } catch (RuntimeException e) {
        logger.log(Level.WARNING, "Unable to find user " + email, e);
        return null;
    }
}