ssh分页1

分页工具类：
package com.leatherstore.other;

public class Pager {
    private int nowPager;//当前页
    private int pageSize;//每页显示的行数
    private int totalRecords;//总信息数
    private int totalPage;//总页数
   
   
    public Pager() {
        super();
    }
   
    public Pager getPage(String pageNum ,int totalRecords,int pageSize){
        this.pageSize=pageSize;
        this.totalRecords=totalRecords;
        if(totalRecords%pageSize==0){//判断总页数
            totalPage=totalRecords/pageSize;
        }else{
            totalPage=totalRecords/pageSize+1;
        }
        if(totalPage==0){//如果总页数等于0，总页数等于1
            totalPage=1;
        }
        if(pageNum==null || "".equals(pageNum)){//判断pageNum为空显示当前页为第一页
            nowPager=1;
        }else{
            try {
                nowPager=Integer.parseInt(pageNum);//当前页就等于参数对应pageNum
            } catch (NumberFormatException e) {
                nowPager=1; //出现异常当前页也等于1
            }
        }
        if(nowPager<1){//如果当前页小于1 当前也就等于1
            nowPager=1;
        }
        if(nowPager>totalPage){//如果大于总页数 就等于总页数
            nowPager=totalPage;
        }
        return this;
       
    }
   
    public int getNowPager() {
        return nowPager;
    }
    public void setNowPager(int nowPager) {
        this.nowPager = nowPager;
    }
    public int getPageSize() {
        return pageSize;
    }
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
    public int getTotalRecords() {
        return totalRecords;
    }
    public void setTotalRecords(int totalRecords) {
        this.totalRecords = totalRecords;
    }
    public int getTotalPage() {
        return totalPage;
    }
    public void setTotalPage(int totalPage) {
        this.totalPage = totalPage;
    }
   
   
}




分页方法：

Java code
package com.leatherstore.dao.impl;

import java.util.List;

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

import com.leatherstore.dao.FwxxDao;
import com.leatherstore.entity.Fwxx;
import com.leatherstore.other.Pager;

public class FwxxDaoImpl extends HibernateDaoSupport implements FwxxDao {

    public int getFwxxCount() {
        String hql = "select count(*) from Fwxx";
        Query query = this.getSession().createQuery(hql);
        return ((Number) query.uniqueResult()).intValue();
    }

    @SuppressWarnings("unchecked")
    public List<Fwxx> getFwxxList(Pager page) {
        String hql = "from Fwxx order by fwid asc ";
        Query query = this.getSession().createQuery(hql);
        query.setFirstResult((page.getNowPager() - 1) * page.getPageSize());// 从第几条开始取
        query.setMaxResults(page.getPageSize());// 取多少条
        return query.list();
    }

}



bizImpl层：
package com.leatherstore.biz.impl;

import java.util.List;

import com.leatherstore.biz.FwxxBiz;
import com.leatherstore.dao.FwxxDao;
import com.leatherstore.entity.Fwxx;
import com.leatherstore.other.Pager;

public class FwxxBizImpl implements FwxxBiz {

    private FwxxDao fwxxDao;
   
    public void setFwxxDao(FwxxDao fwxxDao) {
        this.fwxxDao = fwxxDao;
    }

    public int getFwxxCount() {
        return fwxxDao.getFwxxCount();
    }

    public List<Fwxx> getFwxxList(Pager page) {
        return fwxxDao.getFwxxList(page);
    }

}


action：
package com.leatherstore.struts.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.leatherstore.biz.FwxxBiz;
import com.leatherstore.entity.Fwxx;
import com.leatherstore.other.Pager;
import com.leatherstore.struts.form.FwxxForm;

public class FwxxAction extends Action {
    /*
     * Generated Methods
     */
    private FwxxBiz fwxxBiz;

    public void setFwxxBiz(FwxxBiz fwxxBiz) {
        this.fwxxBiz = fwxxBiz;
    }
//分页属性
    private String pageNum;
    private String pageSize;
    private int totalRecords;
   
    public String getPageNum() {
        return pageNum;
    }

    public void setPageNum(String pageNum) {
        this.pageNum = pageNum;
    }

    public String getPageSize() {
        return pageSize;
    }

    public void setPageSize(String pageSize) {
        this.pageSize = pageSize;
    }

    public int getTotalRecords() {
        return totalRecords;
    }

    public void setTotalRecords(int totalRecords) {
        this.totalRecords = totalRecords;
    }

public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        FwxxForm fwxxForm = (FwxxForm) form;
        Pager page=null;
        try {
            page =new Pager().getPage(pageNum, fwxxBiz.getFwxxCount(), Integer.parseInt(pageSize));
        } catch (Exception e) {
            page =new Pager().getPage(pageNum, fwxxBiz.getFwxxCount(), 4);
        }
        List<Fwxx> fwxxList=fwxxBiz.getFwxxList(page);
        request.setAttribute("fwxx", fwxxList);
        request.setAttribute("page", page);
        return mapping.findForward("showFwxx");
    }

页面
<html>
    <head>
        <base href="<%=basePath%>">

        <title>My JSP 'index.jsp' starting page</title>
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">
        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
        <meta http-equiv="description" content="This is my page">
        <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
        <style type="text/css">
.hand {
    cursor: pointer;
}</style>
        <script type="text/javascript">
          //首页
        function firstPage(){
            var num = document.getElementById("hiddenPageNum");
            if("" != null){
                num.value = 1;
                document.forms[0].submit();
            }
        }
       
        //上一页
        function prePage(){
            var num = document.getElementById("hiddenPageNum");
            if("" != null){
                num.value = num.value - 1;
                document.forms[0].submit();
            }
        }
       
        //下一页
        function nextPage(){
            var num = document.getElementById("hiddenPageNum");
            if("" != null){
                num.value = num.value - 0 + 1;
                document.forms[0].submit();
            }
        }
       
        //末页
        function lastPage(){
            var num = document.getElementById("hiddenPageNum");
            if("" != null){
                num.value = ${page.totalPage};
                document.forms[0].submit();
            }
        }
     
    </script>
</head>

    <body>
    <form action="/sshpager/fwxx.do">
        <table>
            <tr>
                <td>
                    Title
                </td>
                <td>
                    Zj
                </td>
                <td>
                    Lxr
                </td>
                <td>
                    Date
                </td>
            </tr>
            <logic:iterate id="fwxx" name="fwxx">
                <tr>
                    <td>
                        ${fwxx.title }
                    </td>
                    <td>
                        ${fwxx.zj }
                    </td>
                    <td>
                        ${fwxx.lxr }
                    </td>
                    <td>
                        ${fwxx.date }
                    </td>
                </tr>
            </logic:iterate>
        </table>
        <div>
            <span class="hand" onclick="firstPage()">首页</span>
            <span class="hand" onclick="prePage()">上一页</span>
            <span class="hand" onclick="nextPage()">下一页</span>
            <span class="hand" onclick="lastPage()">末页</span>
            ${page.nowPager}/${page.totalPage}
        </div>
        <input type="hidden" name="pageNum" value="${page.nowPager }" id="hiddenPageNum">
        </form>
    </body>
</html>



Title  Zj  Lxr  Date 
北大附近招合租  1000.0  周星星  2007-07-03 09:38:09.0 
健翔桥一居出租了  1200.0  刘景杨  2007-07-03 10:01:00.0 
出租2居  2100.0  伊先生  2007-07-03 01:04:05.0 
便宜出租前门四合院  2500.0  赵大宝  2007-07-03 01:10:29.0 

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