人口信息浏览功能实现（1）
界面：
该界面相较于该系统的前几个功能界面有所不同，前几个界面需要用户向其中输入一些必要的数据，该界面是点击入口即可进入，并且直接执行写好的功能，并将结果进行展示。
源码：
界面源码：
1 <%@page import="entity.People"%> 2 <%@page import="java.util.List"%> 3 4 5 <%@ page language="java" contentType="text/html; charset=utf-8" 6 pageEncoding="utf-8"%> 7 <!DOCTYPE html> 8 <html> 9 <head> 10 <meta charset="utf-8"> 11 <title>第七次全国人口普查-人口信息浏览</title> 12 13 <link rel="stylesheet" href="layui/css/layui.css" media="all"> 14 <script src="layui/layui.js" type="text/javascript"></script> 15 <script src="jquery/jquery-1.9.1.min.js" type="text/javascript"></script> 16 17 </head> 18 <body> 19 <h1 align="center">第七次全国人口普查-人口信息浏览</h1> 20 <form action="PeopleLiulanInfoServlet?method=doGet" method="post"> 21 <% 22 List<People> list =(List<People>)request.getAttribute("list"); 23 %> 24 <table class="layui-table"> 25 <colgroup> 26 <col width="150"> 27 <col width="200"> 28 <col width="250"> 29 <col> 30 </colgroup> 31 <thead> 32 <tr> 33 <th>户主姓名</th> 34 <th>性别</th> 35 <th>民族</th> 36 <th>受教育程度</th> 37 </tr> 38 </thead> 39 <tbody> 40 <% 41 if(list==null){ 42 %> 43 <tr> 44 <td colspan="4" align="center"><label>暂无查找记录</label></td> 45 </tr> 46 <% 47 } 48 else{ 49 for(int i=0;i<list.size();i++){ 50 People p=list.get(i); 51 %> 52 <tr> 53 <td><a href="PeopleLiulanInfoServlet?HZXM=<%= p.getHZXM() %>"><%= p.getHZXM() %></a></td> 54 <td><%= p.getXB() %></td> 55 <td><%= p.getMZ() %></td> 56 <td><%= p.getSJYCD() %></td> 57 </tr> 58 <% 59 } 60 } 61 %> 62 </tbody> 63 </table> 64 65 66 </body> 67 </html>
servlet源代码：
1 package service; 2 3 import java.io.IOException; 4 import java.util.List; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest; 10 import javax.servlet.http.HttpServletResponse; 11 12 import dao.PeopleDao; 13 import dao.PeopleDaoImpI; 14 import entity.People; 15 16 17 /** 18 * Servlet implementation class PeopleLiulanServlet 19 */ 20 @WebServlet("/PeopleLiulanServlet") 21 public class PeopleLiulanServlet extends HttpServlet { 22 private static final long serialVersionUID = 1L; 23 24 /** 25 * @see HttpServlet#HttpServlet() 26 */ 27 public PeopleLiulanServlet() { 28 super(); 29 // TODO Auto-generated constructor stub 30 } 31 32 /** 33 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 34 */ 35 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 36 // TODO Auto-generated method stub 37 doPost(request, response); 38 } 39 40 /** 41 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 42 */ 43 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 44 request.setCharacterEncoding("utf-8"); 45 response.setContentType("text/html;charset=utf-8"); 46 47 PeopleDao pd = new PeopleDaoImpI(); 48 49 try { 50 List<People> people=pd.select(); 51 request.setAttribute("list", people); 52 request.getRequestDispatcher("renkouliulan.jsp").forward(request, response); 53 System.out.println("人口查询成功！！！"); 54 }catch(Exception e){ 55 System.out.println("人口信息查询失败！！！"); 56 e.printStackTrace(); 57 } 58 59 } 60 61 }
这样就可以展示出数据库中所有人口信息的简略列表信息，并且是按照登陆时间排序。
效果截图：
