/**
* 查询单个对象
*
* @param id
*/
private static void getStu() {
Session session = null;
Transaction trans = null;
try {
session = HibernateSessionFactory.getSession();
trans = session.beginTransaction();
// 确认最多只有一条才用
Student stu =
(Student) session.createQuery("from Student where id='20040001'").uniqueResult();
trans.commit();
System.out.println(stu.getSname());
} catch (Exception e) {
e.printStackTrace();
if (trans != null) {
trans.rollback();
}
throw new RuntimeException(e.getMessage());
} finally {
if (session != null && session.isOpen()) {
HibernateSessionFactory.closeSession();
}
}
}
/** 检索类的全部属性 */
private static void getall() {
// 1、检索所有学生信息
List<Student> stus = hql("from Student");
// for循环取出信息
System.out.println("for循环取出list:");
for (Student student : stus) {
System.out.println(student.getSid() + " " + student.getSname());
}
// 迭代器取
System.out.println("迭代器取出list:");
Iterator<Student> iterator = stus.iterator();
while (iterator.hasNext()) {
Student s = iterator.next();
System.out.println(s.getSid() + " " + s.getSname());
}
}
/** 查询计算机系和外语系的学生 */
private static void getsome() {
List<Student> stus = hql("from Student where sdept in('计算机系','外语系')");
for (Student student : stus) {
System.out.println(student.getSid() + " " + student.getSname());
}
}
