@Stateless
public class customerService{
@PersistenceContext(unitName="jpaUnit")//是persistence.xml中配置的<persistence-unit>中的name值
private EntityManager entityManager;
public List<CustomerEO> findAllCustomers()
{
String jpql="select c from CustomerEO c";
Query query=entityManager.createQuery(jpql);
query.setFirstResult(5);//設置查詢結果的開始記錄數(shù)
query.setMaxResults(10);//設查詢結果的結束記錄數(shù) 查詢記錄數(shù)5~~10的數(shù)據(jù)
List<CustomerEO> result=query.getResultList();
return result;
}
}