纯手写实现ajax分页功能

前言

最近用到了这个功能,百度大半天,网上的不是有各种问题就是需要引入其他的插件,无奈,只能自己写,大致功能已经完成。前端页面用bootstrap做样式,分页功能用ajax实现,没用其他插件哦,只引入引这些:

    <link href="bootstrap-3.3.7-dist/css/bootstrap.css" rel="stylesheet" />
    <script src="js/jquery-3.3.1.min.js" type="text/javascript">script>
    <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js" type="text/javascript">script>

简介

相关概念:

ajax:异步的javascript和xml 指的是在不刷新网页的情况下,可以和服务器端通信,局部刷新。

bootstrap:Bootstrap 是最受欢迎的 HTML、CSS 和 JS 框架,用于开发响应式布局、移动设备优先的 WEB 项目。

简析 

主要思路就是写两个ajax方法,一个ajax方法负责更新页数的同时调用另外一个ajax方法,另一个ajax方法负责加载页面数据。

代码

doctype html>
<html>

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <title>文章列表title>
    <link href="css/style.css" rel="stylesheet" />
    <link href="bootstrap-3.3.7-dist/css/bootstrap.css" rel="stylesheet" />
    <script src="js/jquery-3.3.1.min.js" type="text/javascript">script>
    <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js" type="text/javascript">script>
    <script type="text/javascript">
    function rows(np){
        $.ajax({
            url : '../article/rows',
            type : 'POST',
            dataType : 'json',
            /* data : params, */
            success : function(data) {
                var pageCount = data%5 == 0 ? data/5 : (data/5+1);
                var codePage = "";
                for (var j=np-2; j<=np+2; j++) {
                    if(j > pageCount && j > 0){
                        codePage += 
                            "
  • "+(j-5)+"
  • "; } } for (var j=np-2; j<=np+2; j++) { if(j >= 1 && j <= pageCount) { codePage += "
  • "+j+"
  • "; } } for (var j=np-2; j<=np+2; j++) { if(j < 1 && j <= pageCount){ codePage += "
  • "+(j+5)+"
  • "; } } $("#page-size").html(codePage); }, error : function() { alert("rows出错了!"); } }); } function pages(p){ $.ajax({ url : '../article/page', type : 'POST', dataType : 'json', data : {"pageNow":p}, success : function(data) { var code = ""; for (var i=0; i<data.length; i++) { code += "
    \r\n" + "

    \r\n" + " "+data[i].articleTitle+"\r\n" + "

    \r\n
    " + "
    \r\n" + " "+data[i].nowDate+"  \r\n" + " "+data[i].user.userName+"\r\n" + "
    \r\n
    " + "

    "+data[i].articleSummary+"

    \r\n
    " + "\r\n" + " More\r\n" + " \r\n" + "\r\n" + "
    \r\n
    " + "
    "; } $("#tableBody").html(code); }, error : function() { alert("page出错了!"); } }); } $(document).ready(function () { rows(1); pages(1); }); script> head> <body> <nav class="navbar navbar-inverse" role="navigation"> <div class="container-fluid"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#example-navbar-collapse"> <span class="sr-only">切换导航span> <span class="icon-bar">span> <span class="icon-bar">span> <span class="icon-bar">span> button> <a class="navbar-brand" href="#">动态a> div> <div class="collapse navbar-collapse" id="example-navbar-collapse"> <ul class="nav navbar-nav navbar-right"> <li><a href="#"><span class="glyphicon glyphicon-user">span> 注册a>li> <li><a href="#"><span class="glyphicon glyphicon-log-in">span> 登录a>li> ul> <ul class="nav navbar-nav"> <li class="active"><a href="#">首页a>li> <li><a href="#">动态a>li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> 管理 <b class="caret">b> a> <ul class="dropdown-menu"> <li><a href="#">文章a>li> <li><a href="#">评论a>li> ul> li> ul> div> div> nav> <div class="container"> <div class="row"> <div class="col-xs-12 col-sm-10 col-sm-offset-1 col-md-10 col-md-offset-1"> <div class="list-group" id="tableBody"> <div> <h2> <a href="#">在教室内活动应注意安全a> h2> <h5> <span class="glyphicon glyphicon-calendar" aria-hidden="true">2018-02-10span> <span class="glyphicon glyphicon-user" aria-hidden="true">SpringBoot Redisspan> h5> <p>在教室内活动,有许多看起来细微的事情值得同学们注意,否则,在教室里也同样容易发生危险。以下就是几个同学们需要注意的几点: 1. 防磕碰。目前大多数教室空间比较狭小,又置放了许多桌椅、饮水机等用品,所以不应在教室中追逐、打闹,做剧烈的运动和游戏,防止磕碰受伤。 2.防滑、防摔。教室地板比较光滑的,要注意防止滑倒受伤;需要登高打扫卫生、取放物品时,要请他人加以保护,注意防止摔伤。 3.防坠落。无论教室是否处于高层,都不要将身体探出阳台或者窗外,谨防不慎发生坠楼的危险。 4.防挤压。教室的门、窗户在开关时容易压到手,也应当处处小心,要轻轻地开关门窗,还先留意会不会夹到他人的手。 p> <a href="#"> <strong>Morestrong> <span class="glyphicon glyphicon-menu-right" aria-hidden="true">span> a> <hr /> div> <div> <h2> <a href="#">在教室内活动应注意安全a> h2> <h5> <span class="glyphicon glyphicon-calendar" aria-hidden="true">2018-02-10span> <span class="glyphicon glyphicon-user" aria-hidden="true">SpringBoot Redisspan> h5> <p>在教室内活动,有许多看起来细微的事情值得同学们注意,否则,在教室里也同样容易发生危险。以下就是几个同学们需要注意的几点: 1. 防磕碰。目前大多数教室空间比较狭小,又置放了许多桌椅、饮水机等用品,所以不应在教室中追逐、打闹,做剧烈的运动和游戏,防止磕碰受伤。 2.防滑、防摔。教室地板比较光滑的,要注意防止滑倒受伤;需要登高打扫卫生、取放物品时,要请他人加以保护,注意防止摔伤。 3.防坠落。无论教室是否处于高层,都不要将身体探出阳台或者窗外,谨防不慎发生坠楼的危险。 4.防挤压。教室的门、窗户在开关时容易压到手,也应当处处小心,要轻轻地开关门窗,还先留意会不会夹到他人的手。 p> <a href="#"> <strong>Morestrong> <span class="glyphicon glyphicon-menu-right" aria-hidden="true">span> a> <hr /> div> div> <nav aria-label="Page navigation" class="text-center"> <ul class="pagination pagination-lg" id="page-size"> <li><a href="#">首页a>li> <li><a href="#">«上一页a>li> <li><a href="#">1a>li> <li><a href="#">2a>li> <li><a href="#">3a>li> <li><a href="#">4a>li> <li><a href="#">5a>li> <li><a href="#">下一页»a>li> <li><a href="#">尾页a>li> ul> nav> div> div> div> <nav class="navbar navbar-default" role="navigation"> <div class="container-fluid"> <ul class="nav navbar-nav navbar-right"> <li><a href="#">Copyright © 2019   朱学良   蒙ICP备15101216号-1  a>li> ul> div> nav> body> html>

    后台:处理数据(SSM框架写的,看吧)

    package com.securty.imut.controller;
    
    
    
    import java.io.File;
    import java.io.IOException;
    import java.io.InputStream;
    import java.sql.Timestamp;
    import java.util.List;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.apache.commons.io.FileUtils;
    import org.apache.log4j.helpers.LogLog;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.multipart.MultipartFile;
    
    import com.securty.imut.bean.Article;
    import com.securty.imut.service.ArticleService;
    import com.securty.imut.util.WangEditor;
    
     
    @Controller
    @RequestMapping(value="/article")
    public class ArticleController {
     
        @Autowired
        private ArticleService articleService;
        
        /**
         * 查找所有
         * @return
         */
        @RequestMapping(value="/list")
        @ResponseBody
        public List
    list(){ List
    list = articleService.findAll(); return list; } /** * 查找 * @return */ @RequestMapping(value="/page") @ResponseBody public List
    page(HttpServletRequest request){ Article article = new Article(); Timestamp nowDate = new Timestamp(System.currentTimeMillis()); article.setNowDate(nowDate); String pn = request.getParameter("pageNow") == null ? String.valueOf(1) : request.getParameter("pageNow"); int pageNow = Integer.parseInt(pn); int pageSize = 5; int startRows = pageSize*(pageNow-1); List
    list = articleService.queryPage(startRows); return list; } /** * 查找 * @return */ @RequestMapping(value="/rows") @ResponseBody public int rows(HttpServletRequest request){ return articleService.getRowCount(); } @RequestMapping(value="/add") @ResponseBody public int add(Article article){ return articleService.addArticle(article); } @RequestMapping(value="/update") @ResponseBody public int update(Article article){ return articleService.updateArticleById(article); } @RequestMapping(value="/read") @ResponseBody public Article read(Article article){ return articleService.selectArticlesById(article); } @RequestMapping(value="/delete") @ResponseBody public int delete(Integer aid){ return articleService.deleteArticleById(aid); } @RequestMapping(value = "/upload",method=RequestMethod.POST) @ResponseBody public WangEditor uploadFile( @RequestParam("myFile") MultipartFile multipartFile, HttpServletRequest request) { try { // 获取项目路径 String realPath = request.getSession().getServletContext() .getRealPath(""); InputStream inputStream = multipartFile.getInputStream(); String contextPath = request.getContextPath(); // 服务器根目录的路径 String path = realPath.replace(contextPath.substring(1), ""); // 根目录下新建文件夹upload,存放上传图片 String uploadPath = path + "upload"; // 获取文件名称 String filename = multipartFile.getOriginalFilename(); // 将文件上传的服务器根目录下的upload文件夹 File file = new File(uploadPath, filename); FileUtils.copyInputStreamToFile(inputStream, file); // 返回图片访问路径 String url = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + "/upload/" + filename; String [] str = {url}; WangEditor we = new WangEditor(str); return we; } catch (IOException e) { LogLog.error("上传文件失败", e); } return null; } }

    效果

    纯手写实现ajax分页功能_第1张图片

    参考地址

    https://github.com/Aizhuxueliang/security   

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