分頁一般需要pageNum，pageSize，totalPage，totalRow這幾個參數。
我寫的是按照名稱和類型進行關鍵字查詢。
DAO層代碼：
public static int findTotalRow(String keyName,String byType){
int count=0;
Session se=HibernateUtil.getSession();
String hql="from Course c where 1=1";
if(keyName!=null&&!keyName.equals("")){
hql+="and c.name like '%"+keyName+"%'";
}
if(byType!=null&&!byType.equals("")&&!byType.equals("全部類型")){
hql+="and c.type='"+byType+"'";
}
count=se.createQuery(hql).list().size();
HibernateUtil.closeSession(se);
return count;
}
public static List findAll(String keyName,String byType,int pageNum,int pageSize){
List list=null;
Session se=HibernateUtil.getSession();
String hql="from Course c where 1=1";
if(keyName!=null&&!keyName.equals("")){
hql+="and c.name like '%"+keyName+"%'";
}
if(byType!=null&&!byType.equals("")&&!byType.equals("全部類型")){
hql+="and c.type='"+byType+"'";
}
list=se.createQuery(hql)
.setFirstResult((pageNum-1)*pageSize)
.setMaxResults(pageSize)
.list();
HibernateUtil.closeSession(se);
return list;
}
Action的代碼：
public String tolist() throws Exception {
keyName=URLDecoder.decode(keyName, "utf-8");
byType=URLDecoder.decode(byType, "utf-8");
totalRow=CourseDao.findTotalRow(keyName,byType);
courses=CourseDao.findAll(keyName,byType,pageNum,pageSize);
totalPage=totalRow/pageSize;
if(totalRow%pageSize!=0){
totalPage=totalPage+1;
}
return "courseList.jsp";
}
jsp代碼：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
<script type="text/javascript" src="jquery-1.8.3.js"></script>
<script type="text/javascript">
$(function(){
});
function mydel(id){
var flag=confirm("您確定刪除該條信息嗎？");
if(flag){
location='courseAction_del?id='+id;
}
}
function gotoPage(pageNum,keyName,byType){
keyName=encodeURI(encodeURI(keyName));
byType=encodeURI(encodeURI(byType));
//var n=document.getElementById("mysel").value;
location="courseAction_tolist?pageNum="+pageNum+"&keyName="+keyName+"&byType="+byType;
}
function gotoPage2(keyName,byType){
keyName=encodeURI(encodeURI(keyName));
byType=encodeURI(encodeURI(byType));
var n=document.getElementById("mysel").value;
location="courseAction_tolist?pageNum="+n+"&keyName="+keyName+"&byType="+byType;
}
</script>
</head>
<h3>課程列表</h3>
<form action="courseAction_tolist" method="post">
名稱：<input type="text" name="keyName" value="${keyName}" />
類型：<select name="byType">
<option value="全部類型" ${byType=="全部類型"?"selected='selected'":""}>全部類型</option>
<option value="java類" ${byType=="java類"?"selected='selected'":""}>java類</option>
<option value="基礎類" ${byType=="基礎類"?"selected='selected'":""}>基礎類</option>
<option value="數據庫類" ${byType=="數據庫類"?"selected='selected'":""}>數據庫類</option>
<option value="網頁類" ${byType=="網頁類"?"selected='selected'":""}>網頁類</option>
</select>
<input type="submit" value="查詢"/>
</form>
<table border="1" width="700">
<tr>
<th>編號</th>
<th>名稱</th>
<th>類型</th>
<th>內容</th>
<th>學分</th>
<th>操作</th>
</tr>
<c:forEach items="${courses}" var="c">
<tr>
<td>${c.cno}</td>
<td>${c.name}</td>
<td>${c.type}</td>
<td>${c.contents}</td>
<td>${c.point}</td>
<td><a href="courseAction_toupd?id=${c.id}">修改</a> | <a href="javascript:mydel(${c.id});">刪除</a></td>
</tr>
</c:forEach>
</table>
<a href="javascript:gotoPage(1,'${keyName}','${byType}');">首頁</a>
<c:choose>
<c:when test="${pageNum>1}">
<a href="javascript:gotoPage(${pageNum-1},'${keyName}','${byType}');">上一頁</a>
</c:when>
<c:otherwise>
<a>上一頁</a>
</c:otherwise>
</c:choose>
<c:choose>
<c:when test="${pageNum<totalPage}">
<a href="javascript:gotoPage(${pageNum+1},'${keyName}','${byType}');">下一頁</a>
</c:when>
<c:otherwise>
<a>下一頁</a>
</c:otherwise>
</c:choose>
<a href="javascript:gotoPage(${totalPage},'${keyName}','${byType}');">末頁</a>
第${pageNum}頁/共${totalPage}頁
跳轉到第
<select id="mysel" onchange="gotoPage2('${keyName}','${byType}');">
<c:forEach begin="1" end="${totalPage}" step="1" var="p">
<option value="${p}" ${p==pageNum?"selected='selected'":""}>${p}</option>
</c:forEach>
</select>
頁
</html>
注意點：利用get請求傳參時中文會發生亂碼，所以在jsp頁面需要編碼，後端需要解碼：
keyName=encodeURI(encodeURI(keyName));
byType=encodeURI(encodeURI(byType));
-------------------------------------------------------------------------------------------------------
keyName=URLDecoder.decode(keyName, "utf-8");
byType=URLDecoder.decode(byType, "utf-8");