JSP+Servlet 实现分页（Tomcat 9）

===========访问地址

项目路径/mulPageSystem

===========java文件；包名org.rain.bean 文件名 PageSystemBean

package org.rain.bean;

public class PageSystemBean {

private String school;

private String home;

public String getSchool() {

return school;

}

public void setSchool(String school) {

this.school = school;

}

public String getHome() {

return home;

}

public void setHome(String home) {

this.home = home;

}

===========java文件；包名org.rain.servlet 文件名 MulPage

package org.rain.servlet;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

import org.rain.bean.PageSystemBean;

@WebServlet("/mulPageSystem")

public class MulPage extends HttpServlet {

private static final long serialVersionUID = 1L;

List<PageSystemBean> smallRainPageSystemBeans;

int smallRainTotalRecord=45;

int smallRainSize = 10;

int smallRainCurrent = 1;

@Override

public void init(ServletConfig config) throws ServletException{

smallRainPageSystemBeans=new ArrayList<PageSystemBean>(smallRainTotalRecord);

for(int i=0;i<smallRainTotalRecord;i++){

PageSystemBean bean=new PageSystemBean();

bean.setSchool("大学"+i);

bean.setHome("地址"+i);

smallRainPageSystemBeans.add(i, bean);

}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String smallRainpage = request.getParameter("smallRainpage");

request.getSession().setAttribute("URIRight", "right uri");

HttpSession sms=request.getSession();

if (smallRainpage != null) {

smallRainCurrent = Integer.parseInt(smallRainpage);

request.setAttribute("smallRainpage", smallRainCurrent);

}else {

request.setAttribute("smallRainpage", 1);

smallRainCurrent=1;

}

int smallRainDo = (smallRainCurrent - 1) * smallRainSize;

int totalPageBeans = smallRainPageSystemBeans.size();

int totalPages =totalPageBeans / smallRainSize;

totalPages++;

List<PageSystemBean> smallRainCurrentPageBeans;

if(totalPages==smallRainCurrent){

smallRainCurrentPageBeans = smallRainPageSystemBeans.subList(smallRainDo, totalPageBeans);

}else{

smallRainCurrentPageBeans = smallRainPageSystemBeans.subList(smallRainDo, smallRainDo+smallRainSize);

}

request.setAttribute("smallRainCurrentPageBeans", smallRainCurrentPageBeans);

request.setAttribute("smallRainCurrent", smallRainCurrent);

request.setAttribute("totalPages", totalPages);

request.setAttribute("smallRainURI", request.getServletPath().substring(1));

request.getRequestDispatcher("/MulPageSystemServlet.jsp").forward(request, response);

}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

doGet(request, response);

}

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ page import="org.rain.bean.PageSystemBean,java.util.List,java.util.ArrayList" %>

<html>

<head>

<title>晓雨 JSP+SERVLET 实现分页</title>

</head>

<body>

<h1> 晓雨 JSP+SERVLET 实现分页</h1>

</tr>

Object smsession=request.getSession().getAttribute("URIRight");

Object smsessionRequest=request.getAttribute("smallRainpage");

if(null!=smsession&&smsessionRequest!=null){

int backColor=0;

List<PageSystemBean> beans=(List<PageSystemBean>)request.getAttribute("smallRainCurrentPageBeans");

for (PageSystemBean smallRainPageBean : beans) {

backColor++;

if(backColor%2==0){

<%}else{%>

<tr >

<%}%>

</tr>

<% } %>

</table>

<% Object smsessionTable=request.getSession().getAttribute("URIRight");

Object smsessionrequestTable=request.getAttribute("smallRainpage");

if(null!=smsessionTable&&smsessionrequestTable!=null){

<b>

String smallRainURI=(String)request.getAttribute("smallRainURI");

int smallRainCurrent=(int)request.getAttribute("smallRainCurrent");

int smallRaintotalPages=(int)request.getAttribute("totalPages");

if (smallRainCurrent > 1) { %>

<a href="<%=smallRainURI%>?smallRainpage=<%= smallRainCurrent - 1 %>">上一页</a>

<% } %>

for (int i = 1; i <= smallRaintotalPages; i++) { %>

<% if (i == smallRainCurrent) { %>

<% } else { %>

<a href="<%=smallRainURI%>?smallRainpage=<%= i %>"><%= i %></a>

<% } %>

<% if (smallRainCurrent < smallRaintotalPages) { %>

<a href="<%=smallRainURI%>?smallRainpage=<%= smallRainCurrent + 1 %>">下一页</a>

<% } %>

</b>

</table>

<% }

</body>

</html>

JSP+Servlet 实现分页（Tomcat 9）

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