Hibernate里面如何使用DetachedCriteriaCriteria 实现多条件分页查询

WEB层：

// 获取分页的请求参数
String start = request.getParameter("start");
String page = request.getParameter("page");
String limit = request.getParameter("limit");

//获取请求表单的值，然后根据值是否为空，构件离线查询条件。
String tb_zzid = request.getParameter("tb_zzid");
String zc_xmbh = request.getParameter("zc_xmbh");
String zy_xmbh = request.getParameter("zy_xmbh");
String zc_zcly = request.getParameter("zc_zcly");

DetachedCriteria criteria=DetachedCriteria.forClass(Zyzc.class);

if(tb_zzid !=null && !"".equals(tb_zzid))
{
criteria.add(Restrictions.like("tb_zzid", tb_zzid, MatchMode.ANYWHERE));
}
if(zc_xmbh !=null && !"".equals(zc_xmbh))
{
criteria.add(Restrictions.like("zc_xmbh", zc_xmbh, MatchMode.ANYWHERE));
}
if(zy_xmbh !=null && !"".equals(zy_xmbh))
{
criteria.add(Restrictions.like("zy_xmbh", zy_xmbh, MatchMode.ANYWHERE));
}
if(zc_zcly !=null && !"".equals(zc_zcly))
{
criteria.add(Restrictions.like("zc_zcly", zc_zcly, MatchMode.ANYWHERE));
}

--------------------------------

然后就可以调用service层的方法

//获取根据离线条件查询的记录；

es.getZyzcsByConditonPage( criteria,Integer.parseInt(page), Integer.parseInt(limit))

//获取根据离线条件查询的记录总数；

es.getZyzcCountByCondition(criteria)

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SERVICE层：

//调用DAO层方法
public long getZyzcCountByCondition(DetachedCriteria criteria) {
// TODO Auto-generated method stub
try
{
return zyzcDao.findCountByCondition(criteria);
}
catch (Exception e)
{
e.printStackTrace();
throw new ElecException("获取发电记录列表出错");
}
}

//调用DAO方法获取记录总数
public List<Zyzc> getZyzcsByConditonPage(DetachedCriteria criteria, int pageNo, int pageSize)
{

List<Zyzc> result = new ArrayList<Zyzc>();
try
{
List el = zyzcDao.findByConditionPage(criteria, pageNo, pageSize);
for (Object o : el)
{
Zyzc e = (Zyzc)o;
result.add(e);
}
return result;
}
catch (Exception e)
{
e.printStackTrace();
throw new ElecException("获取发电记录列表出错");
}
}

--------------------------------------------------------------------

DAO层：

//继承hibernate4公共基础类，获取session,然后执行离线查询；

public class ZyzcDAOImpl extends BaseDaoHibernate4<Zyzc> implements ZyzcDAO
{

public List findByConditionPage(DetachedCriteria criteria, int pageNo,int pageSize)
{
Criteria c =criteria.getExecutableCriteria(getSessionFactory().getCurrentSession());
// 执行分页，并返回查询结果
return c.setProjection(null)
.setFirstResult((pageNo - 1) * pageSize)
.setMaxResults(pageSize)
.list();
}

// 获取查询记录结果总数，用于分页；
public long findCountByCondition(DetachedCriteria criteria)
{
Criteria c =criteria.getExecutableCriteria(getSessionFactory().getCurrentSession());
c.setProjection(Projections.rowCount());
Long totalNum =(Long) c.uniqueResult();
return totalNum;
}

}

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结果演示：



未设置任何条件时，显示记录总数量；



设置条件后，显示查询结果总数。