Hibernate 通用 DAO 基础 CRUD 实现

插入方法

public void insert(Object o) {
    Session session = HibernateSessionFactory.currentSession();
    Transaction t = session.beginTransaction();
    session.save(o);
    t.commit();
    HibernateSessionFactory.closeSession();
}

删除方法

public void delete(Object o, Serializable id) {
    Session session = HibernateSessionFactory.currentSession();
    Transaction t = session.beginTransaction();
    Object obj = session.get(o.getClass(), id);
    if (obj != null) {
        session.delete(obj);
    }
    t.commit();
    HibernateSessionFactory.closeSession();
}

更新方法

public void update(Object o, Serializable id) {
    Session session = HibernateSessionFactory.currentSession();
    Transaction t = session.beginTransaction();
    session.update(o);
    t.commit();
    HibernateSessionFactory.closeSession();
}

基于 HQL 的通用查询

public ArrayList select(String sql) {
       HibernateSessionFactory.currentSession();
       session.createQuery(sql);
       query.list();
    HibernateSessionFactory.closeSession();
     (ArrayList) list;
}