编写hibernateDao，使dao层都实现hibernateDao

 

package com.wiseweb.core.dao;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;

@SuppressWarnings("unchecked")
public abstract class HibernateDAO <T, P extends Serializable> {

    @Autowired
    private SessionFactory sessionFactory;
    
    /**
     * 获取sessionFactory工厂
     * @return
     */
    protected SessionFactory getSessionFactory(){
        
        return this.sessionFactory;
    }
    
    /**
     * 获取数据库session会话
     * @return
     */
    protected Session getSession(){
        
        return this.sessionFactory != null ? this.sessionFactory.getCurrentSession() : null;
    }
    /**
     * 保存数据库
     * @param object
     * @throws Exception
     */
    public void save(T object) throws Exception{
        
        if (getSession() != null) {
            getSession().save(object);
        }
    }
    /**
     * 删除数据库
     * @param object
     * @throws Exception
     */
    public void delete(T object) throws Exception{
        
        if (getSession() != null) {
            getSession().delete(object);
        }
    }
    /**
     * 更新数据库
     * @param object
     * @throws Exception
     */
    public void update(T object) throws Exception{
        
        if (getSession() != null) {
            getSession().update(object);
        }
    }
    /**
     * 根据id查询
     * @param tClass
     * @param id
     * @return
     * @throws Exception
     */
    public T get(Class<T> tClass, P id) throws Exception{
        
        if (getSession() != null) {
            return (T) getSession().get(tClass, id);
        }
        return null;
    }
    /**
     * 根据sql语句做相应的查询
     * @param hql
     * @return
     * @throws Exception
     */
    public List<T> createQueryByHql(String hql) throws Exception{
        
        List<T> list = new ArrayList<T>();
        if (hql != null || !hql.equals("")) {
            if (getSession() != null) {
                list = getSession().createQuery(hql).list();
            }
        }
        return list;
    }
    /**
     * 分页查询
     * @param hql
     * @param pageNum
     * @param pageSize
     * @return
     * @throws Exception
     */
    public List<T> createQueryByHql(String hql, int pageNum, int pageSize) throws Exception{
        
        List<T> list = new ArrayList<T>();
        if (hql != null || !hql.equals("")) {
            if (getSession() != null) {
                Query query = getSession().createQuery(hql);
                query.setFirstResult((pageNum - 1) * pageSize);
                query.setMaxResults(pageSize);
                list = query.list();
            }
        }
        return list;
    }
}