使用criteria api获取最后一条记录

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;

// 获取最后一条记录
public Object getLastRecord(EntityManager entityManager, Class<?> entityClass) {
    CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
    CriteriaQuery<?> criteriaQuery = criteriaBuilder.createQuery(entityClass);
    Root<?> root = criteriaQuery.from(entityClass);
    criteriaQuery.orderBy(criteriaBuilder.desc(root.get("id")));
    TypedQuery<?> typedQuery = entityManager.createQuery(criteriaQuery);
    typedQuery.setMaxResults(1);
    List<?> resultList = typedQuery.getResultList();
    if (!resultList.isEmpty()) {
        return resultList.get(0);
    }
    return null;
}