spring+hibernate4整合dao

1: package org.ssh2test1.dao;

2:

3: import java.io.Serializable;

4: import java.util.List;

5:

6: import org.hibernate.Criteria;

7: import org.hibernate.Session;

8: import org.hibernate.SessionFactory;

9: import org.hibernate.criterion.Criterion;

10: import org.springframework.context.ApplicationContext;

11: import org.springframework.context.support.ClassPathXmlApplicationContext;

12: import org.ssh2test1.utils.ReflectionUtils;

13:

14:

15: public class HibernateBaseDao<T, ID extends Serializable> {

16: 	private Class<T> entityClass;

17:

18: 	private static SessionFactory sessionFactory;

19: 	private static Session session ;

20:

21: 	static {

22: 		String[] configLocations = new String[] {"classpath:applicationContext-*.xml"};

23: 		ApplicationContext ctx = new ClassPathXmlApplicationContext(configLocations);

24: 		sessionFactory = ctx.getBean("sessionFactory",SessionFactory.class);

25: 	}

26:

27:

28: 	public static Session getSession() {

29: 		return sessionFactory.openSession();

30: 	}

31:

32: 	public HibernateBaseDao() {

33: 		entityClass = ReflectionUtils.getSuperClassGenricType(getClass());

34: 	}

35:

36: 	public Criteria createCriteria(Criterion... criterions) {

37: 		Criteria criteria = this.getSession().createCriteria(entityClass);

38: 		for (Criterion criterion : criterions) {

39: 			criteria.add(criterion);

40: 		}

41: 		return criteria;

42: 	}

43:

44: 	public List<T> getAll(Criterion... criterions) {

45: 		return createCriteria(criterions).list();

46: 	}

47:

48: 	public T getById(ID id) {

49: 		return (T) this.getSession().get(entityClass, id);

50: 	}

51:

52: 	public void save(Object entity) {

53: 		this.getSession().save(entity);

54: 	}

55:

56: }

57: