「java前台分页」java中分页
今天给各位分享java前台分页的知识，其中也会对java中分页进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
JAVA JSP怎么在前台进行分页？
上下页分别加点击事件出入页码和数量，在js中拼html然后innerHtml就好了，不需要保存上一页数据啊
java 数据放在了list中，如何实现前台分页
比如你有个List list = new ArrayList();
你在页面拿到这个list集合，存在页面内存里面，通过数组下边每次取5条记录，来实现分页效果
java前段分页怎么设计
ListAction.java
package com.sy.action;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
import com.sy.dao.AdminDao;
import com.sy.dao.NewsDao;
import com.sy.dao.impl.AdminDaoImpl;
import com.sy.dao.impl.NewsDaoImpl;
import com.sy.vo.Admin;
import com.sy.vo.News;
public class ListAction extends ActionSupport {
private static final long serialVersionUID = 1L;
int i=1;//中间变量
private int k;//储存最大页面数
private int pageNow=1; //页码数,初始为1
private int pageSize = 5 ; //页面行数
private int intRowCount;//总行数
private int intPageCount;//总页数
private Admin admin;
private ListAdmin Adminss;
private News news;
@SuppressWarnings("unchecked")
private ListNews Newss;
private int id;
private int aid;
public News getNews() {
return news;
}
public void setNews(News news) {
this.news = news;
}
@SuppressWarnings("unchecked")
public ListNews getNewss() {
return Newss;
}
public void setNewss(ListNews newss) {
Newss = newss;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Admin getAdmin() {
return admin;
}
public void setAdmin(Admin admin) {
this.admin = admin;
}
public ListAdmin getAdminss() {
return Adminss;
}
public void setAdminss(ListAdmin adminss) {
Adminss = adminss;
}
public int getAid() {
return aid;
}
public void setAid(int aid) {
this.aid = aid;
}
public int getPageNow() {
return pageNow;
}
public void setPageNow(int pageNow) {
this.pageNow = pageNow;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getIntRowCount() {
return intRowCount;
}
public void setIntRowCount(int intRowCount) {
this.intRowCount = intRowCount;
}
public int getIntPageCount() {
return intPageCount;
}
public void setIntPageCount(int intPageCount) {
this.intPageCount = intPageCount;
}
public int getK() {
return k;
}
public void setK(int k) {
this.k = k;
}
@SuppressWarnings("unchecked")
@Override
//显示新闻列表
public String execute() throws Exception {
NewsDao npage=new NewsDaoImpl();
intRowCount=npage.count();
k=(intRowCount + pageSize - 1) / pageSize;
intPageCount = (intRowCount + pageSize - 1) / pageSize;//计算出总页数
if(pageNow1){
pageNow=1;
}
if(pageNow intPageCount)
pageNow=intPageCount;
i = (pageNow -1)*pageSize;
NewsDao nlist=new NewsDaoImpl();
if(null!=nlist.queryByPage(i,pageSize)){
Newss = nlist.queryByPage(i,pageSize);
return SUCCESS;
}else{
return "failure";
}
}
..
}
listNews.jsp
%@ page language="java" pageEncoding="UTF-8"%
%@ taglib prefix="s" uri="/struts-tags"%
%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
html
head
base href="%=basePath%"
titleMy JSP 'index.jsp' starting page/title
/head
body
..
center
共s:property value="intRowCount"/记录nbsp;nbsp;
第s:property value="pageNow"/页nbsp;nbsp;
s:url id="url_pre" value="list.action"
s:param name="pageNow" value="pageNow-1"/s:param
/s:url
s:url id="url_next" value="list.action"
s:param name="pageNow" value="pageNow+1"/s:param
/s:url
s:iterator value="Newss" status="status"
s:url id="url" value="list.action"
s:param name="pageNow" value="pageNow"/
/s:url
/s:iterator
s:if test="pageNow==1"
s:a href="%{url_pre}"最前一页/s:a
/s:if
s:else
s:a href="%{url_pre}"上一页/s:a
/s:else
s:if test="pageNow==k"
s:a href="%{url_next}"最后一页/s:a
/s:if
s:else
s:a href="%{url_next}"下一页/s:a
/s:else
/center
/body
/html
NewsDao.java
package com.sy.dao.impl;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import com.sy.dao.NewsDao;
import com.sy.util.DataBaseConnection;
import com.sy.util.StringUtil;
import com.sy.vo.News;
public class NewsDaoImpl implements NewsDao {
//获取分页新闻列表
@SuppressWarnings("unchecked")
public ListNews queryByPage(int i,int pageSize){
ListNews newss=new ArrayList();
PreparedStatement pstmt = null ;
String sql = null ;
ResultSet rs = null ;
DataBaseConnection dbc = null ;
dbc = new DataBaseConnection() ;
sql = "select * from struts2new order by id asc limit " + i + "," + pageSize;
try
{
pstmt = dbc.getConnection().prepareStatement(sql);
rs = pstmt.executeQuery() ;
while(rs.next())
{
News news=new News();
news.setId(rs.getInt("id"));
news.setName(rs.getString("name"));
news.setTitle(rs.getString("title"));
news.setDate(rs.getString("date"));
news.setEmail(rs.getString("email"));
news.setContent(rs.getString("content"));
i++;
newss.add(news);
}
rs.close() ;
pstmt.close() ;
}
catch(Exception e)
{
System.out.println(e) ;
}
finally
{
dbc.close();
}
return newss;
}
//查询总行数
public int count() {
int intRowCount = 0;//总行数
PreparedStatement pstmt = null ;
String sql = null ;
ResultSet rs = null ;
DataBaseConnection dbc = null ;
dbc = new DataBaseConnection() ;
sql = "select count(id) from struts2new order by id asc";
try
{
pstmt = dbc.getConnection().prepareStatement(sql);
rs = pstmt.executeQuery();
rs.next();//游标指向第一行
intRowCount=rs.getInt(1);//取得总行数
rs.close() ;
pstmt.close() ;
}
catch(Exception e)
{
System.out.println(e) ;
}
finally
{
dbc.close();
}
return intRowCount;
}
}
java前台分页的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java中分页、java前台分页的信息别忘了在本站进行查找喔。
发布于：2022-11-30，除非注明，否则均为原创文章，转载请注明出处。