java PageBeanUtil_beanutil page-优快云博客

package com.aptech.util;

import com.aptech.vo.PageBean;

public class PageBeanUtil {
   public static PageBean fillPageBean(
           Integer totalCount,
           Integer currentPage,
           Integer pageSize){
       //总页数
       Integer totalPage=totalCount%pageSize==0?
               totalCount/pageSize:
                   totalCount/pageSize+1;

       //上一页
       Integer prePage=currentPage<=1?1:currentPage-1;
       //下一页
       Integer nextPage=currentPage>=totalPage?totalPage:currentPage+1;

       // 1...3456789...15
       // 12345...15
       //起始页
       Integer startPage=currentPage-Constant.DEFAULT_INTERVAL_PAGE<=1?
               1:currentPage-Constant.DEFAULT_INTERVAL_PAGE;

       //结束页
       Integer endPage=currentPage+Constant.DEFAULT_INTERVAL_PAGE>=totalPage?
               totalPage:currentPage+Constant.DEFAULT_INTERVAL_PAGE;

       PageBean bean=new PageBean();
       bean.setCurrentPage(currentPage);
       bean.setPageSize(pageSize);
       bean.setStartPage(startPage);
       bean.setPrePage(prePage);
       bean.setEndPage(endPage);
       bean.setNextPage(nextPage);
       bean.setTotalCount(totalCount);
       bean.setTotalPage(totalPage);
       return bean;
   }
}

//vo 类

package com.aptech.vo;

import java.util.List;
//1...3456789...15
public class PageBean {
   private Integer currentPage; // 当前页数
   private Integer pageSize; // 每页条数
   private Integer totalCount; // 总条数
   private Integer totalPage; // 总页数
   private Integer prePage; // 上一页
   private Integer nextPage; // 下一页
   private Integer startPage; // 开始页
   private Integer endPage; // 结束页
   private List data; // 数据
   /**
   * @return the currentPage
   */
   public Integer getCurrentPage() {
       return currentPage;
   }
   /**
   * @param currentPage the currentPage to set
   */
   public void setCurrentPage(Integer currentPage) {
       this.currentPage = currentPage;
   }
   /**
   * @return the pageSize
   */
   public Integer getPageSize() {
       return pageSize;
   }
   /**
   * @param pageSize the pageSize to set
   */
   public void setPageSize(Integer pageSize) {
       this.pageSize = pageSize;
   }
   /**
   * @return the totalCount
   */
   public Integer getTotalCount() {
       return totalCount;
   }
   /**
   * @param totalCount the totalCount to set
   */
   public void setTotalCount(Integer totalCount) {
       this.totalCount = totalCount;
   }
   /**
   * @return the totalPage
   */
   public Integer getTotalPage() {
       return totalPage;
   }
   /**
   * @param totalPage the totalPage to set
   */
   public void setTotalPage(Integer totalPage) {
       this.totalPage = totalPage;
   }
   /**
   * @return the prePage
   */
   public Integer getPrePage() {
       return prePage;
   }
   /**
   * @param prePage the prePage to set
   */
   public void setPrePage(Integer prePage) {
       this.prePage = prePage;
   }
   /**
   * @return the nextPage
   */
   public Integer getNextPage() {
       return nextPage;
   }
   /**
   * @param nextPage the nextPage to set
   */
   public void setNextPage(Integer nextPage) {
       this.nextPage = nextPage;
   }
   /**
   * @return the startPage
   */
   public Integer getStartPage() {
       return startPage;
   }
   /**
   * @param startPage the startPage to set
   */
   public void setStartPage(Integer startPage) {
       this.startPage = startPage;
   }
   /**
   * @return the endPage
   */
   public Integer getEndPage() {
       return endPage;
   }
   /**
   * @param endPage the endPage to set
   */
   public void setEndPage(Integer endPage) {
       this.endPage = endPage;
   }
   /**
   * @return the data
   */
   public List getData() {
       return data;
   }
   /**
   * @param data the data to set
   */
   public void setData(List data) {
       this.data = data;
   }



}

//QueryDao

package com.aptech.dao;

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;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class QueryDAO extends HibernateDaoSupport{
   public List queryByPage(
           final String hql,
           final Integer currentPage,
           final Integer pageSize,
           final Object ...objects){
       return this.getHibernateTemplate().executeFind(new HibernateCallback() {
           public Object doInHibernate(Session session) throws HibernateException,
                   SQLException {
               // TODO Auto-generated method stub
               Query query=session.createQuery(hql);
               if(currentPage !=null &&
                       pageSize!=null){
                   query.setMaxResults(pageSize);
                   query.setFirstResult((currentPage-1) * pageSize);
               }
               if(objects!=null){
                   for (int i = 0; i < objects.length; i++) {
                       query.setParameter(i, objects[i]);
                   }
               }
               return query.list();
           }
       });
   }

   public List queryByHQL(String hql,Object...objects){
       return this.queryByPage(hql, null, null, objects);
   }
   public Object queryByUnique(String hql,Object...objects){
       List list=this.queryByHQL(hql, objects);
       return list!=null && list.size()>0?list.get(0):null;
   }
}