HibernateBaseDAO

HibernateBaseDAO接口

 package com.iotek.homework.dao;

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

 /**
  * Created by Bo on 2017/4/9.
  */
 public interface HibernateBaseDAO<T> {

     //添加
     void doCreate(T entity) throws Exception;

     //删除
     void doDelete(T entity) throws Exception;

     //修改
     void doUpdate(T entity) throws Exception;

     //查询
     List<T> doFind(String hql, Object...param) throws Exception;

     //根据主键ID查询
     T doFindById(Class<T> tClass, Serializable id) throws Exception;

     //分页查询
     List<T> queryPage(String hql, final int START_INDEX, final int PAGE_SIZE, Object...param) throws Exception;

     //用于分页查询的总行数
     List<Long> queryTotalRows(String hql, Object...param) throws Exception;
 }

HibernateBaseDAOImpl实现类

 package com.iotek.homework.dao;

 import org.hibernate.HibernateException;
 import org.hibernate.Query;
 import org.hibernate.Session;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.orm.hibernate4.HibernateCallback;
 import org.springframework.orm.hibernate4.HibernateTemplate;

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

 /**
  * Created by Bo on 2017/4/9.
  */
 public class HibernateBaseDAOImpl<T> implements HibernateBaseDAO<T> {

     @Autowired
     private HibernateTemplate hibernateTemplate;

     @Override
     public void doCreate(T entity) throws Exception {
         hibernateTemplate.save(entity);
     }

     @Override
     public void doDelete(T entity) throws Exception {
         hibernateTemplate.delete(entity);
     }

     @Override
     public void doUpdate(T entity) throws Exception {
         hibernateTemplate.update(entity);
     }

     @Override
     public List<T> doFind(String hql, Object... param) throws Exception {
         return (List<T>) hibernateTemplate.find(hql,param);
     }

     @Override
     public T doFindById(Class<T> tClass, Serializable id) throws Exception {
         return hibernateTemplate.get(tClass, id);
     }

     @Override
     public List<T> queryPage(String hql, int START_INDEX, int PAGE_SIZE, Object... param) throws Exception {
         return hibernateTemplate.execute(new HibernateCallback<List<T>>() {
             @Override
             public List<T> doInHibernate(Session session) throws HibernateException {
                 Query query = session.createQuery(hql);
                 if(param != null){
                     for(int i = 0 ; i < param.length ; i ++){
                         query.setParameter(i, param[i]);
                     }
                 }
                 query.setFirstResult(START_INDEX);
                 query.setMaxResults(PAGE_SIZE);
                 return query.list();
             }
         });
     }

     @Override
     public List<Long> queryTotalRows(String hql, Object...param) throws Exception {
         return (List<Long>) hibernateTemplate.find(hql,param);
     }
 }

继承使用

public interface UserDAO extends HibernateBaseDAO<User>{}

public class UserDAOImpl extends HibernateBaseDAOImpl<User> implements UserDAO{}