当在做项目时，很多地方需要分页，而又不想引用很繁琐复杂的分页插件，那么可以自己写一个。。
分页jsp：page_plugins.jsp
<%@ page contentType="text/html; charset=GBK"%>
<%@page import="com.opensymphony.oscache.util.StringUtil"%>
<%@page import="server.helper.PageListHelper"%>
<%@page import="java.util.Map"%>
<%@page import="java.util.Set"%>
<%@page import="java.util.Enumeration"%>
<%
String str_iPageSize = (String)request.getAttribute(PageListHelper.SIGN_IPAGESIZE); // 每页显示条数多少
String str_iPageNo = (String)request.getAttribute(PageListHelper.SIGN_IPAGENO); // 当前页
String str_iCountAll = (String)request.getAttribute(PageListHelper.SIGN_ICOUNTALL); // 总记录数
String goto_page = (String)request.getAttribute("javax.servlet.forward.request_uri"); // 列表页面Url
int iPageNo = Integer.parseInt(StringUtil.isEmpty(str_iPageNo)?"1":str_iPageNo); // 当前页 iPageNo
int iPageSize = Integer.parseInt(StringUtil.isEmpty(str_iPageSize)?PageListHelper.DEFAULT_PAGESIZE+"":str_iPageSize ); //页面显示条数
int iCountAll = Integer.parseInt(StringUtil.isEmpty(str_iCountAll)?"0":str_iCountAll); //总记录
int o_pageall = iCountAll/iPageSize; // 总页数
if (iCountAll%iPageSize > 0)
{
o_pageall = o_pageall + 1;
}
//如果当前页大于总页数 当总页数为0
if(iPageNo > o_pageall)
{
iPageNo = 0;
}
%>
<script type="text/javascript">
function showsize(){
var iPageSize=document.pageRecordForm.iPageSize.value;
if(iPageSize.length==0||checknumber(iPageSize)==false){
alert("输入条数有误！");
return;
}
if(iPageSize<1||iPageSize>parseInt(document.pageRecordForm.iCountAll.value)){
alert("输入条数不在范围1-"+document.pageRecordForm.iCountAll.value+"内！");
return;
}
document.pageRecordForm.iPageNo.value=1;
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
// 第一页
function hrefFirstPageOnclick(){
document.pageRecordForm.iPageNo.value=1;
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
// 上一页
function hrefPreviousPageOnclick(){
document.pageRecordForm.iPageNo.value=parseInt(document.pageRecordForm.iPageNo.value)-1;
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
// 下一页
function hrefNextPageOnclick(){
document.pageRecordForm.iPageNo.value=parseInt(document.pageRecordForm.iPageNo.value)+1;
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
// 最后一页
function hrefLastPageOnclick(){
document.pageRecordForm.iPageNo.value=document.pageRecordForm.iPageAll.value;
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
// 转到
function goto(){
var iPageNo=document.pageRecordForm.iPageNo.value;
if(document.pageRecordForm.iPageAll.value < 1)
{
alert("对不起，暂时还没有符合条件的记录，不能进行翻页.");
return;
}
if(iPageNo.length==0||checknumber(iPageNo)==false){
alert("输入页码有误！");
return;
}
if(iPageNo<1||iPageNo>parseInt(document.pageRecordForm.iPageAll.value)){
alert("输入页码不在范围1-"+document.pageRecordForm.iPageAll.value+"内！");
return;
}
document.pageRecordForm.target="_self";
document.pageRecordForm.submit();
}
function checknumber(strValue){
if(strValue.search(/^[0-9]+[.]?[0-9]*$/)==-1) return false;
return true;
}
</script>
<form name="pageRecordForm" id="pageRecordForm" method="post" onsubmit="return false;" action="<%=goto_page %>">
<%
//所有查询条件
for (Enumeration<String> keyNames = request.getAttributeNames(); keyNames.hasMoreElements();)
{
String key = keyNames.nextElement();
if (PageListHelper.notHiddenKey(key))
{
continue;
}
%>
<input type="hidden" name="<%=key %>" value="<%=request.getAttribute(key) %>"/>
<%
}
%>
<table border="0" cellpadding="0" cellspacing="0" width="90%" bordercolorlight="#999999" bordercolordark="#ffffff" align="center">
<tr>
<td colspan="20" align="center">
<br>
总记录数：<%=iCountAll%>
<input type="hidden" name="iCountAll" value="<%=iCountAll%>">
每页显示<input type="text" size="3" maxlength="3" name="iPageSize" value="<%=iPageSize%>" style="text-align:center;" onkeydown="if(event.keyCode==13) return showsize(this.form);">条记录
<br>
第<%=iPageNo%>页/共<%=o_pageall%>页
<input type="hidden" name="iPageAll" value="<%=o_pageall%>">
<%
if(iPageNo==1 || iPageNo == 0){
%>
首页
<%
}else{
%>
<a href="#" name="hrefFirstPage" title="点击进入首页" onclick="hrefFirstPageOnclick();" class="black">首页</a>
<%
}
if(iPageNo==1 || iPageNo == 0){
%>
上一页
<%
}else{
%>
<a href="#" name="hrefPreviousPage" title="点击进入上一页" onclick="hrefPreviousPageOnclick();" class="black">上一页</a>
<%
}
if(iPageNo==o_pageall){
%>
下一页
<%
}else{
%>
<a href="#" name="hrefNextPage" title="点击进入下一页" onclick="hrefNextPageOnclick();" class="black">下一页</a>
<%
}
if(iPageNo==o_pageall){
%>
尾页
<%
}else{
%>
<a href="#" name="hrefLastPage" title="点击进入尾页" onclick="hrefLastPageOnclick();" class="black">尾页</a>
<%
}
%>
跳转至<input type="text" size="3" maxlength="3" name="iPageNo" value="<%=iPageNo%>" style="text-align:center;" onkeydown="if(event.keyCode==13) return goto();">页
</td>
</tr>
</table>
View Code
分页工具类：PageListHelper.java：
package server.helper;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import com.opensymphony.oscache.util.StringUtil;
/**分页工具类
*
* @create_date ：2013-8-16 下午01:16:46
*
*/
public class PageListHelper {
public static final String SIGN_IPAGESIZE = "iPageSize"; // 每页显示条数多少
public static final String SIGN_IPAGENO = "iPageNo"; // 当前页
public static final String SIGN_ICOUNTALL = "iCountAll"; // 总记录数
public static final String PAGE_START = "startIndex"; //
public static final String PAGE_END = "endIndex"; //
public static final String DEFAULT_PAGESIZE = "50"; // 默认显示条数
public static final String VINDICATE_PAGESIZE = "20"; //每页显示条个数
/**分页前，调用该页面，获取基本分页参数
*
* @create_date ：2013-8-16 下午01:22:40
* @param request
* @return
*/
public static Map<String, Object> initPageParameter(HttpServletRequest request, Map<String, Object> parameterMap, Integer iCountAll)
{
String str_iPageSize = request.getParameter(PageListHelper.SIGN_IPAGESIZE); // 每页显示条数多少
String str_iPageNo = request.getParameter(PageListHelper.SIGN_IPAGENO); // 当前页
str_iPageSize = StringUtil.isEmpty(str_iPageSize)?PageListHelper.DEFAULT_PAGESIZE+"":str_iPageSize;
str_iPageNo = StringUtil.isEmpty(str_iPageNo)?"1":str_iPageNo;
Integer startIndex = (Integer.parseInt(str_iPageNo)-1) * Integer.parseInt(str_iPageSize);// 开始显示
Integer endIndex = startIndex + Integer.parseInt(str_iPageSize);// 结束条数
// 在dao中调用
parameterMap.put(PageListHelper.SIGN_IPAGESIZE, str_iPageSize);
parameterMap.put(PageListHelper.SIGN_IPAGENO, str_iPageNo);
parameterMap.put(PageListHelper.PAGE_START, startIndex); // 开始 当前页*页面显示条数
parameterMap.put(PageListHelper.PAGE_END, endIndex); // 结束
// 设置参数给分页插件接收
parameterMap.put(PageListHelper.SIGN_ICOUNTALL, iCountAll+"");
// 设置所有parameterMap中的参数入request中
Set<String> keySet = parameterMap.keySet();
if (keySet != null && keySet.size() > 0)
{
for (String key : keySet)
{
request.setAttribute(key, parameterMap.get(key));
}
}
return parameterMap;
}
/**在分页插件中，参数map中key包含以下标识将不显示隐藏域
*
* @create_date ：2013-8-20 上午08:30:02
* @param key
* @return
*/
public static boolean notHiddenKey(String key)
{
if (StringUtil.isEmpty(key))
{
return false;
}
String[] PAGE_SIGNLIST = {SIGN_IPAGESIZE, SIGN_IPAGENO, SIGN_ICOUNTALL, PAGE_START,PAGE_END};
for (String keyString : PAGE_SIGNLIST){
if (key.equalsIgnoreCase(keyString))
{
return true;
}
}
return false;
}
}
View Code
引用调用：
每页显示记录条数设置
整个系统默认显示条数配置在类PageListHelper. DEFAULT_PAGESIZE = 50; // 默认显示条数
使用方法：
页面调用
在jsp列表添加:
<jsp:include flush="true" page="/page_plugins.jsp"/>
注意：不要添加在form表单内。
控制类调用
在调用dao查询集合列表时：这样写：
if ("common_dictionary_list.jsp".equals(tabid)) // 列表页面根据分类ID查询
{
Map parameterMap = new HashMap();
String common_type = request.getParameter("common_type");
// 设置查询参数
parameterMap.put("common_type", common_type);
parameterMap.put("tabid", "common_dictionary_list.jsp");
// 获取总记录数
int iCountAll = commonDictionaryDAO.getCommonDictionaryInfoListCount(parameterMap);
// 设置分页参数 initPageParameter(request, 查询参数, 总记录数, 列表页跳转链接)
PageListHelper.initPageParameter(request, parameterMap, iCountAll);
// 根据分页参数查询集合
List<CommonDictionaryInfo> commonDictionaryInfoList = commonDictionaryDAO.getCommonDictionaryInfoList(parameterMap);
request.setAttribute("commonDictionaryInfoList", commonDictionaryInfoList); // 用户ID
request.getRequestDispatcher(tabid).forward(request, response);
return ;
}
DAO调用
/**查询_公用数据字典_集合
* @param userId
* @return
* @throws ServerException
*/
public List<CommonDictionaryInfo> getCommonDictionaryInfoList(Map param) throws ServerException {
try {
List<CommonDictionaryInfo> retList = sqlMapper.queryForList("common_dictionary_list", param);
return retList;
} catch (SQLException e) {
throw new ServerException(e);
}
}
/**查询_公用数据字典_集合_总记录
*
* @param userId
* @return
* @throws ServerException
*/
public Integer getCommonDictionaryInfoListCount(Map param) throws ServerException {
try {
Integer count = (Integer) sqlMapper.queryForObject("common_dictionary_list_count", param);
return count;
} catch (SQLException e) {
throw new ServerException(e);
}
}
SQL调用
<sql id="sql_select_common_dictionary">
select common_type_name,
common_type,
common_name,
common_value,
column_bak,
remark,
created_by,
date_created,
updated_by,
date_updated
from sibrms_common_dictionary
<dynamic prepend="where">
<isNotEmpty prepend="and" property="common_value">
common_value = #common_value#
</isNotEmpty>
<isNotEmpty prepend="and" property="common_name">
common_name = #common_name#
</isNotEmpty>
<isNotEmpty prepend="and" property="common_type">
common_type = #common_type#
</isNotEmpty>
</dynamic>
</sql>
<!-- 公用数据字典表 start -->
<!-- 公用数据字典表-查询 -->
<select id="common_dictionary_list" parameterClass="java.util.Map" resultClass="server.report.model.CommonDictionaryInfo">
select *
from (select sbci.*, rownum rn
from (
<include refid="sql_select_common_dictionary" />
order by nlssort(common_type_name,'NLS_SORT=SCHINESE_PINYIN_M'),common_value
) sbci
<isNotEmpty property="endIndex" > <![CDATA[ where rownum <= #endIndex# ]]> </isNotEmpty>
)
<isNotEmpty property="startIndex" > <![CDATA[ where rn > #startIndex# ]]> </isNotEmpty>
</select>
<!-- 公用数据字典表-统计个数 -->
<select id="common_dictionary_list_count" parameterClass="java.util.Map" resultClass="java.lang.Integer">
select count(0) as count
from (
<include refid="sql_select_common_dictionary" />
)
</select>
