例如,一个产品类,Product,创建好需要的entity,需要从前台传入的数据有当前的页数,封装一个Page类,如下:

/** * 分页类的封装 */@Componentpublic class Page
    
      {	private int page; // 当前页数	private int totalCount; // 总记录数	private int totalPage; // 总页数	private int limit; // 每页显示的记录数	private List
     
       list; // 每页显示数据的集合.	public int getPage() {		return page;	}	public void setPage(int page) {		this.page = page;	}	public int getTotalCount() {		return totalCount;	}	public void setTotalCount(int totalCount) {		this.totalCount = totalCount;	}	public int getTotalPage() {		return totalPage;	}	public void setTotalPage(int totalPage) {		this.totalPage = totalPage;	}	public int getLimit() {		return limit;	}	public void setLimit(int limit) {		this.limit = limit;	}	public List
      
        getList() {		return list;	}	public void setList(List
       
         list) {		this.list = list;	}}
       
      
     
    

然后再编写继承ActionSupport类并实现ModelDriven的action类:

@Componentpublic class ProductAction extends ActionSupport implements ModelDriven{	@Resource	private ProductInfo productInfo = new ProductInfo();			@Override	public Object getModel() {		return productInfo;	}}

action中要实现分页查询的方法,所以编写dao层的分页查询方法:

dao层的分页查询实现是继承了HibernateDaoSupport中的方法:

this.getHibernateTemplate().execute(HibernateCallback
    
      action)
    

这里重新封装一下自己使用的HibernateCallback类:

import java.sql.SQLException;import java.util.List;import org.hibernate.HibernateException;import org.hibernate.Query;import org.hibernate.Session;import org.springframework.orm.hibernate3.HibernateCallback;public class PageHibernateCallback
    
      implements HibernateCallback
     
      
       >{		private String hql;	private Object[] params;	private int startIndex;	private int pageSize;		public PageHibernateCallback(String hql, Object[] params,			int startIndex, int pageSize) {		super();		this.hql = hql;		this.params = params;		this.startIndex = startIndex;		this.pageSize = pageSize;	}	public List
       
         doInHibernate(Session session) throws HibernateException,			SQLException {		//执行hql语句		Query query = session.createQuery(hql);		//设置实际参数		if(params != null){			for(int i = 0 ; i < params.length ; i ++){				query.setParameter(i, params[i]);			}		}		//实现分页		query.setFirstResult(startIndex);		query.setMaxResults(pageSize);				return query.list();	}}
       
      
     
    

封装好了自己使用的分页查询回调方法,那么在dao层编写分页查询方法:

//Dao层的分页查询方法public List findByPage(Integer id, int begin, int limit) {		String hql = "select p from Product p where p.id = ? ";		List
    
      list = this.getHibernateTemplate().execute(new PageHibernateCallback
     
      (hql, new Object[]{id}, begin, limit));		if(list != null && list.size() > 0){			return list;		}		return null;	}
     
    

接着在service层使用dao的方法即可:

public Page
    
      findByPage(Integer id, Integer pageNumber) {		int limit = 10;		int begin = (page -1) * limit;		page.setLimit(limit);		int totalCount = 0;		totalCount = productDao.findCountByCsid(csid);		page.setTotalCount(totalCount);		page.setPage(pageNumber);		int totalPage = (int) Math.ceil((double)totalCount / limit);		page.setTotalPage(totalPage);		List list = productDao.findByPage(id, begin, limit);		page.setList(list);		return page;	}
    

然后在action中编写需要的方法:

private Integer id;	private Integer page;	//设置好需要从前台获取的数据	public void setId(Integer id) {		this.id = id;	}	public void setPage(Integer page) {		this.page = page;	}	public void setPage(Integer page) {		this.page = page;	}//action类中方法public String findByPage() {		Page
    
      page = productService.findByPage(id, page);// 根据一级分类查询商品,带分页查询		// 将Page存入到值栈中:		ActionContext.getContext().getValueStack().set("page", page);		return "findByPage";	}
    

最后在jsp页面和struts.xml配置好对应的属性即可.