对于懒加载问题简单的解决方式

    static Employee query(int id,boolean includeDepart){
        Session s=null;
        try{
            s=HibernateUtil.getSession();
            Employee emp=(Employee) s.get(Employee.class, id);
            if(includeDepart)
                Hibernate.initialize(emp.getDepart());
            return emp;
        }finally{
            if(s!=null) s.close();
        }
    }