jsp realizes the function of turning the previous page to the next page (sample code)-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

jsp realizes the function of turning the previous page to the next page (sample code)

韦小宝

Jan 18, 2018 am 09:52 AM

javascriptFunctionTurn page

The following editor will bring you a jsp to implement the function of turning the previous page to the next page (sample code). The editor thinks it's pretty good, so I'll share the JSP source code with you now and give it as a reference. If you are interested in JSP, please follow the editor to take a look.

I have been busy with final exams and looking for internships some time ago, and I haven’t blogged for a long time.

I worked on a small project during this period, including page turning and rich textEditorTwo knowledge points of Ueditor. I haven’t played Ueditor very deeply yet, and I plan to play with it later. Write a blog.

To realize the page turning function, you only need to set a pageIndex, and then load data through pageIndex every time the page is loaded.

Then we can set up a hidden input box to pass pageIndex to the next page.

When we click on the previous page, we can change the value of pageIndex through the js method and then submit the form.

Without further ado, look at the code. The code is relatively clear. .

This is the code of index.jsp.

index.jsp

<%@page import="Bean.DBBean"%>
<%@page import="Entity.Record"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>NoteBook of Eric Wu</title>
  <link rel="stylesheet" href="css/basic.css" rel="external nofollow" >
  <link rel="stylesheet" href="css/index.css" rel="external nofollow" >
</head>
<body>
<%
  int allRecord=0;//总的记录条数,不包含查询后的
  int totalRecord=0;//总的记录条数,包含查询后的
  int totalPage=1;//总的页面数，包含查询后的
  int pageIndex=1;//当前页面号，用于控制页面翻转，默认为1
  List<Record> records=null;
  DBBean db=new DBBean();
  allRecord=db.getRecordCount();
  totalRecord=db.getRecordCount();
  totalPage=(totalRecord-1)/10+1;
  if(request.getParameter("pageIndex")!=null){//不是第一次加载
    //要做下数据类型转换
    pageIndex=Integer.valueOf(request.getParameter("pageIndex"));
    if(request.getParameter("keyword")!=null){
      String keyword=request.getParameter("keyword");
      records=db.getRecords(pageIndex,keyword);//获取查询内容一页的事件记录集,共10条
      totalRecord=db.getRecordCount(keyword);
      totalPage=(totalRecord-1)/10+1;
    }else{
      records=db.getRecords(pageIndex);//获取一页的事件记录集,共10条
    }
  }else{//第一次加载
    records=db.getRecords(pageIndex);//获取一页的事件记录集,共10条
  }
  session.setAttribute("records", records);//便于后面使用
%>
  <p id="home">
  <p id="header">
    <p id="WebTitle">
      <p class="maintitle"><a href="index.jsp" rel="external nofollow" rel="external nofollow" target="_blank">NoteBook of Eric Wu</a></p>
      <p class="subtitle">The palest ink is better than the best memory !</p>
    </p>

    <p id="navigator">
      <ul id="navList">
        <li><a href="index.jsp" rel="external nofollow" rel="external nofollow" >首页</a></li>
        <li><a href="add.jsp" rel="external nofollow" >新增</a></li>
        <li><a href="change.jsp" rel="external nofollow" >修改</a></li>
          <li><a href="delete.jsp" rel="external nofollow" >删除</a></li>
      </ul>
      <p id="Stats">
        记录-<%=allRecord %>
      </p><!--end: Stats 状态-->
    </p><!-- end: navigator 导航栏 -->
  </p><!-- end: header 头部 -->
  
  <p id="main">
      <p id="content">
        <form id="searchForm" name="searchForm" action="index.jsp" method="get">
          <input type="hidden" name="pageIndex" id="pageIndex" value="1">
        <p id="search">
          <p class="center"></p>
          <input type="text" class="search" id="keyword" name="keyword" placeholder="请输入要查询的记录">
          <img  class="button lazy"  src="/static/imghwm/default1.png"  data-src="img/search.jpg"   onclick="searchKeyword();"  alt="jsp realizes the function of turning the previous page to the next page (sample code)" >
        </p>
      </form>
        <table>
        <tr>
          <th width="10%">序号</th>
          <th width="60%">标题</th>
          <th width="30%">时间</th>
        </tr>
        <%
          int count=0;
          if(records!=null){
            for(Record r: records){
              count++;
        %>
        <tr>
          <td class="center"><%= count %></td>
          <td><a href="content.jsp?recordId=<%= r.getId() %>" rel="external nofollow"  target="_blank"><%= r.getTitle() %></a></td>
          <td class="center"><%= r.getTime() %></td>
        </tr>
        <%  
            }
          }
        %>
         <tr class="alt" >
          <td class="center" colspan="3">
            共<%= totalRecord %>条记录   
            共<%= totalPage %>页   
            每页10条   
            当前第<%= pageIndex %>页   
            <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" class="turnPage" onclick="turnTopPage()">上一页</a>   
            <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" class="turnPage" onclick="turnBottomPage()">下一页</a>   
          </td>
        </tr>
        </table>
    </p><!-- end: content 内容 -->
  </p><!-- end: main 主要部分 -->

  <p id="footer">   
    Copyright ©2017 汕大-吴广林
  </p><!-- end: footer底部-->
  </p><!-- end: home 自定义的最大容器 -->
</body>

<script type="text/javascript">
  var pageIndex=<%=pageIndex %>;
  var totalPage=<%=totalPage %>;
  console.log(pageIndex);
  //上一页
  function turnTopPage(){
    if(pageIndex==1){
      return;
    }else{
      document.getElementById("pageIndex").value=pageIndex-1;
      document.getElementById("searchForm").submit();
    }
  }
  //下一页
  function turnBottomPage(){
    if(pageIndex>=totalPage){  
      return;
      }else{
      document.getElementById("pageIndex").value=pageIndex+1;
      document.getElementById("searchForm").submit();
      }
  }
  function searchKeyword(){
    document.getElementById("pageIndex").value=1;
    document.getElementById("searchForm").submit();
  }
</script>
</html>

Rendering

Turn the page After: pageIndex=1

After turning the page: pageIndex=2

The above jsp implements the previous page The next page turning function (sample code) is all the content that the editor has shared with you. I hope it can give you a reference! !

Related recommendations:

Advantages, Disadvantages and Basic Operations of JSP

##Related explanation of the path problem after Servlet jumps to the JSP page

What should I do if there is a path problem when the Servlet forwards to the JSP page?

The above is the detailed content of jsp realizes the function of turning the previous page to the next page (sample code). For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Understanding the JavaScript Engine: Implementation DetailsApr 17, 2025 am 12:05 AM

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python vs. JavaScript: The Learning Curve and Ease of UseApr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python vs. JavaScript: Community, Libraries, and ResourcesApr 15, 2025 am 12:16 AM

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

From C/C to JavaScript: How It All WorksApr 14, 2025 am 12:05 AM

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

JavaScript Engines: Comparing ImplementationsApr 13, 2025 am 12:05 AM

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

Beyond the Browser: JavaScript in the Real WorldApr 12, 2025 am 12:06 AM

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

Building a Multi-Tenant SaaS Application with Next.js (Backend Integration)Apr 11, 2025 am 08:23 AM

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

How to Build a Multi-Tenant SaaS Application with Next.js (Frontend Integration)Apr 11, 2025 am 08:22 AM

This article demonstrates frontend integration with a backend secured by Permit, building a functional EdTech SaaS application using Next.js. The frontend fetches user permissions to control UI visibility and ensures API requests adhere to role-base

See all articles