爬取疫情数据

package dao;

import java.sql.*;
import java.util.ArrayList;

import entity.Pre;
import util.DBUtil;

public class predao {
    public ArrayList<Pre> getquanguo()
    {
        ArrayList<Pre> list=new ArrayList<>();
        String sql="select * from info";
        Connection con=null;
        Statement state=null;
        ResultSet rs=null;
        con=DBUtil.getConn();
        Pre bean=null;
        int flag=0;
        try {
            state=con.createStatement();
            rs=state.executeQuery(sql);
            while(rs.next())
            {
                String name=rs.getString("Province");
                String confirmed=rs.getString("Confirmed_num");
                bean=new Pre(name,confirmed);
                list.add(bean);
                if(name.equals("西藏自治区")){
                    flag=1;
                }
                if(flag==1)
                    break;
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        DBUtil.close(rs, state, con);
        return list;
    }
    public ArrayList<Pre> findtime(String btime,String etime)
    {
        String begin="";
        String []s=btime.split("-");
        for(int i=0;i<s.length;i++)
            begin+=s[i].toString();
        
        String end="";
        String []e=etime.split("-");
        for(int i=0;i<e.length;i++)
            end+=e[i].toString();
        System.out.println(begin+" "+end);
        int bg=Integer.valueOf(begin);
        int ed=Integer.valueOf(end);
        //System.out.println(bg+" "+end);
        ArrayList<Pre> list=new ArrayList<>();
        String sql="select * from info";
        Connection con=null;
        Statement state=null;
        ResultSet rs=null;
        con=DBUtil.getConn();
        Pre bean=null;
        try {
            state=con.createStatement();
            rs=state.executeQuery(sql);
            while(rs.next())
            {
                int id=rs.getInt("id");
                String name=rs.getString("Province");
                String city=rs.getString("city");
                String confirmed=rs.getString("Confirmed_num");
                String cured=rs.getString("Cured_num");
                String dead=rs.getString("Dead_num");
                String date=rs.getString("Date");
                String ans="";
                String date2=date.substring(0, 10);
                String []d=date2.split("-");
                for(int i=0;i<d.length;i++)
                {
                    ans+=d[i].toString();
                }
                int k=Integer.valueOf(ans);
                System.out.println(k);
                if(k>=bg&&k<=ed) {
                    bean=new Pre(id,name,city,confirmed,cured,dead,date);
                    list.add(bean);
                }
            }
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        DBUtil.close(rs, state, con);
        return list;
    }
}

package entity;

public class Pre {
    private int id;
    private String name;
    private String city;
    private String confirmed;
    private String cured;
    private String dead;
    private String date;
    
    public String getCity() {
        return city;
    }
    public void setCity(String city) {
        this.city = city;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getConfirmed() {
        return confirmed;
    }
    public void setConfirmed(String confirmed) {
        this.confirmed = confirmed;
    }
    public String getCured() {
        return cured;
    }
    public void setCured(String cured) {
        this.cured = cured;
    }
    public String getDead() {
        return dead;
    }
    public void setDead(String dead) {
        this.dead = dead;
    }
    public String getDate() {
        return date;
    }
    public void setDate(String date) {
        this.date = date;
    }
    
    public Pre() {
        super();
    }
    public Pre(int id, String name, String city, String confirmed, String cured, String dead, String date) {
        super();
        this.id = id;
        this.name = name;
        this.city = city;
        this.confirmed = confirmed;
        this.cured = cured;
        this.dead = dead;
        this.date = date;
    }
    public Pre(String name,String confirmed) {
        super();
        this.name = name;
        this.confirmed = confirmed;

    }
    
}

package service;
import java.util.List;
import dao.XinxiDao;
import entity.Pre;
public class XinxiService{
    XinxiDao dao=new XinxiDao();
 
    public List<Pre> list() {
     //列出表中所有信息
        return dao.list();
    }

    public List<Pre> select(String name, String teacher, String classroom) {
        // TODO Auto-generated method stub
        return null;
    }
}

package servlet;

import java.io.IOException;
import java.util.ArrayList;

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 dao.predao;
import entity.Pre;

/**
 * Servlet implementation class Chart
 */
@WebServlet("/Chart")
public class Chart extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Chart() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        request.setCharacterEncoding("utf-8");
        predao dao=new predao();
        ArrayList<Pre> list=dao.getquanguo();
        request.setAttribute("pres", list);
        request.getRequestDispatcher("chart.jsp").forward(request, response);
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}

package servlet;

import java.io.IOException;
import java.util.ArrayList;

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 dao.predao;
import entity.Pre;

/**
 * Servlet implementation class checkfind
 */
@WebServlet("/checkfind")
public class checkfind extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public checkfind() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        request.setCharacterEncoding("utf-8");
        String btime=request.getParameter("btime");
        String etime=request.getParameter("etime");
        predao dao=new predao();
        ArrayList<Pre> list=dao.findtime(btime,etime);
        if(list!=null)
        {
            request.setAttribute("pres", list);
            request.getRequestDispatcher("listall.jsp").forward(request, response);
        }
        else
        {
            request.setAttribute("message", "当前时间段无病例");
            request.getRequestDispatcher("listall.jsp").forward(request, response);
        }
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}

package servlet;
import java.io.IOException;
import java.util.List;
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 entity.Pre;
import service.XinxiService;
/**
 * Servlet implementation class courseServlet
 */
@WebServlet("/courseServlet")
public class XinxiServlet extends HttpServlet{
    private static final long serialVersionUID = 1L;
    XinxiService service=new XinxiService();

    private void select(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
     //查找
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        String teacher = req.getParameter("teacher");
        String classroom = req.getParameter("classroom");
        List<Pre> course = service.select(name, teacher, classroom);
        req.setAttribute("info", course);
        req.getRequestDispatcher("keshihuaceshi.jsp").forward(req,resp);
 
    }
}

package util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBUtil {
    
    private static final String db_url="jdbc:mysql://localhost:3306/class?useUnicode=true&characterEncoding=GB18030&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true";
    public static String db_user = "root";
    public static String db_pass = "root";
    
    public static Connection getConn () {
        Connection conn = null;
        
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(db_url, db_user, db_pass);
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return conn;
    }
    
    /**
     * �ر�����
     * @param state
     * @param conn
     */
    public static void close (Statement state, Connection conn) {
        if (state != null) {
            try {
                state.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
    
    public static void close (ResultSet rs, Statement state, Connection conn) {
        if (rs != null) {
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (state != null) {
            try {
                state.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    public static Connection conn() {
          Connection conn = null;
        
        try {
             Class.forName("com.mysql.jdbc.Driver");//锟斤拷锟斤拷锟斤拷锟斤拷
            conn = DriverManager.getConnection(db_url, db_user, db_pass);
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return conn;
    }
}

<%@ 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>全国疫情统计可视化地图</title>
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/jquery-1.12.1.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/static/bootstrap-3.3.5-dist/js/bootstrap.js"></script>
<link rel="stylesheet" href="${pageContext.request.contextPath}/static/bootstrap-3.3.5-dist/css/bootstrap.css" />
</head>
<frameset frameborder="no" rows="82px, *">
    <frame src="head.jsp">
    <frameset  cols="285px, *">
        <frame src="left.jsp">
        <frame  name="mainAction">
    </frameset>
</frameset>

 

<%@ 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>Insert title here</title>

<style type="text/css">
body {
 margin: 0;
 padding: 0;
 font-size: 12px;
 font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif
}
.leftMenu {
 min-width:220px;
    width:268px;
 margin:40px auto 0 auto;
}
.menu {
 border: #bdd7f2 1px solid;
 border-top: #0080c4 4px solid;
 border-bottom: #0080c4 4px solid;
 background: #f4f9ff repeat-y right;
 margin-left: 10px;
}
.menu .ListTitle {

 border-bottom: 1px #98c9ee solid;
 display: block;
 text-align: center;
 /*position: relative;*/
 height: 38px;
 line-height: 38px;
 cursor: pointer;
 /*+min-width:220px;*/

 +width:100%;
}
.ListTitlePanel {
 position: relative;
}
.leftbgbt {
 position: absolute;
 background: no-repeat;
 width: 11px;
 height: 52px;
 left: -11px;
 top: -4px;
}
/*.leftbgbt {
 float:left;
 background: no-repeat;
 width: 11px;
 height: 52px;
 left: 0px;
 top: 0px;
 zoom:1;
 z-index:200px;
}
*/
.leftbgbt2 {
 position: absolute;
 background: no-repeat;
 width: 11px;
 height: 48px;
 left: -11px;
 top: -1px;
}
.menuList {
 display: block;
 height: auto;
}
.menuList div {
 height: 28px;
 line-height: 24px;
 border-bottom: 1px #98c9ee dotted;
}
.menuList div a {
 display: block;
 background: #fff;
 line-height: 28px;
 height: 28px;
 
 color: #185697;
 text-decoration: none;
}
.menuList div a:hover {
 color: #f30;
 background: #0080c4;
 color: #fff;
}
</style>

<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/jquery-1.12.1.js"></script>
<script type="text/javascript">
$(document).ready(function() {
 var menuParent = $('.menu > .ListTitlePanel > div');//获取menu下的父层的DIV
 var menuList = $('.menuList');
 $('.menu > .menuParent > .ListTitlePanel > .ListTitle').each(function(i) {//获取列表的大标题并遍历
  $(this).click(function(){
   if($(menuList[i]).css('display') == 'none'){
    $(menuList[i]).slideDown(300);
   }
   else{
    $(menuList[i]).slideUp(300);
   }
  });
 });
});
</script>

</head>
<body style="margin-top: -30px;">

<div class="leftMenu">
 <div class="menu">
  <div class="menuParent">
   <div class="ListTitlePanel">
    <div class="ListTitle">
     <strong>资料查询</strong>
     <div class="leftbgbt2"> </div>
    </div>
   </div>
   <div class="menuList" style="text-align:center">
    <div> <a target="mainAction"  href="${pageContext.request.contextPath}/listall.jsp">疫情查询</a></div>
    <div> <a target="mainAction" href="${pageContext.request.contextPath}/keshihuaceshi.jsp">全国疫情柱状图统计</a></div>

   </div>
  </div>
  
  </div>
</div>
 
</body>
</html>

 

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<script>
console.log($('#bt1').val())
console.log($('#bt2').val());
</script>


<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>ECharts</title>
    <!-- 引入 echarts.js -->
    <script src="echarts.min.js"></script>
</head>
<body>

    <div id="main" style="width: 600px;height:400px;"></div>
    <script type="text/javascript">
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

        // 指定图表的配置项和数据
        var option = {
            title: {
                text: '本日各省确诊病例数量分析'
            },
            tooltip: {},
            legend: {
                data:['人数']
            },
            xAxis: {
                data: ["湖北省","广东省","浙江省","河南省"
                    ,"安徽省"
                    ,"江西省"
                    ,"江苏省"
                    ,"重庆市"
                    ,"山东省"
                    ,"四川省"
                    ,"北京市"
                    ,"黑龙江省"
                    ,"上海市"
                    ,"河北省"
                    ,"陕西省"
                    ,"广西壮族自治区"
                    ,"云南省"
                    ,"海南省"
                    ,"山西省"
                    ,"辽宁省"
                    ,"贵州省"
                    ,"天津市"
                    ,"甘肃省"
                    ,"吉林省"
                    ,"内蒙古自治区"
                    ,"宁夏回族自治区"
                    ,"新疆维吾尔自治区"
                    ,"香港"
                    ,"青海省"
                    ,"台湾"]
            },
            yAxis: {},
            series: [{
                name: '人数',
                type: 'bar',
                data: [24953,
                    1075,
                    1048,
                    981,
                    733,
                    698,
                    439,
                    426,
                    407,
                    363,
                    315,
                    295,
                    286,
                    195,
                    195,
                    183,
                    138,
                    124,
                    104,
                    99,
                    89,
                    88,
                    71,
                    69,
                    52,
                    45,
                    42,
                    26,
                    18,
                    17]
            }]
        };

        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(option);
    </script>
<div>
      
        <table class="tb">
            <tr>
                <td>时间</td>
                <td>省份</td>
                <td>确诊患者</td>
                <td>治愈</td>
                <td>死亡</td>
                <td>编码</td>
            </tr>
            <!-- forEach遍历出adminBeans -->
             <c:forEach items="${info}" var="item">
                <tr>
                    <td>${item.data}</td>
                    <td>${item.province}</td>
                    <td>${item.con_num}</td>
                    <td>${item.cure_num}</td>
                    <td>${item.dead_num}</td>
                    <td>${item.code}</td>
                </tr>
            </c:forEach>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>湖北省</td>
                <td>24953</td>
                <td>1123</td>
                <td>699</td>
                <td>420000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>广东省</td>
                <td>1075</td>
                <td>105</td>
                <td>1</td>
                <td>440000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>浙江省</td>
                <td>1048</td>
                <td>136</td>
                <td>0</td>
                <td>330000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>河南省</td>
                <td>981</td>
                <td>99</td>
                <td>4</td>
                <td>410000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>安徽省</td>
                <td>733</td>
                <td>57</td>
                <td>0</td>
                <td>340000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>江西省</td>
                <td>698</td>
                <td>55</td>
                <td>0</td>
                <td>360000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>江苏省</td>
                <td>439</td>
                <td>43</td>
                <td>0</td>
                <td>320000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>重庆市</td>
                <td>426</td>
                <td>31</td>
                <td>2</td>
                <td>500000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>山东省</td>
                <td>407</td>
                <td>40</td>
                <td>0</td>
                <td>370000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>四川省</td>
                <td>363</td>
                <td>52</td>
                <td>1</td>
                <td>510000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>北京市</td>
                <td>315</td>
                <td>34</td>
                <td>2</td>
                <td>110000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>黑龙江省</td>
                <td>295</td>
                <td>13</td>
                <td>5</td>
                <td>230000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>上海市</td>
                <td>286</td>
                <td>41</td>
                <td>1</td>
                <td>310000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>河北省</td>
                <td>195</td>
                <td>28</td>
                <td>1</td>
                <td>130000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>陕西省</td>
                <td>195</td>
                <td>19</td>
                <td>0</td>
                <td>610000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>广东省</td>
                <td>1075</td>
                <td>105</td>
                <td>1</td>
                <td>440000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>广西壮族自治区</td>
                <td>183</td>
                <td>17</td>
                <td>0</td>
                <td>450000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>云南省</td>
                <td>138</td>
                <td>12</td>
                <td>0</td>
                <td>530000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>海南省</td>
                <td>124</td>
                <td>11</td>
                <td>2</td>
                <td>460000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>山西省</td>
                <td>104</td>
                <td>15</td>
                <td>0</td>
                <td>140000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>广东省</td>
                <td>1075</td>
                <td>105</td>
                <td>1</td>
                <td>440000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>辽宁省</td>
                <td>99</td>
                <td>7</td>
                <td>0</td>
                <td>210000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>广东省</td>
                <td>1075</td>
                <td>105</td>
                <td>1</td>
                <td>440000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>贵州省</td>
                <td>89</td>
                <td>6</td>
                <td>1</td>
                <td>520000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>天津市</td>
                <td>1075</td>
                <td>105</td>
                <td>1</td>
                <td>440000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>天津市</td>
                <td>88</td>
                <td>2</td>
                <td>1</td>
                <td>120000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>甘肃省</td>
                <td>71</td>
                <td>9</td>
                <td>1</td>
                <td>620000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>吉林省</td>
                <td>69</td>
                <td>4</td>
                <td>1</td>
                <td>220000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>内蒙古自治区</td>
                <td>52</td>
                <td>5</td>
                <td>0</td>
                <td>150000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>宁夏回族自治区</td>
                <td>45</td>
                <td>5</td>
                <td>0</td>
                <td>640000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>新疆维吾尔自治区</td>
                <td>42</td>
                <td>0</td>
                <td>0</td>
                <td>650000</td>
            </tr>
             <tr>
                <td>2020-02-08 02:28:59</td>
                <td>香港</td>
                <td>26</td>
                <td>0</td>
                <td>1</td>
                <td>810000</td>
            </tr>
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>青海省</td>
                <td>18</td>
                <td>3</td>
                <td>0</td>
                <td>630000</td>
            </tr>
            
            <tr>
                <td>2020-02-08 02:28:59</td>
                <td>台湾</td>
                <td>17</td>
                <td>1</td>
                <td>1</td>
                <td>710000</td>
            </tr>
        </table>
    </div>
    <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
    
</body>
</html>

</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>ECharts</title>
    <!-- 引入 echarts.js -->
    <script src="chart/echarts.min.js"></script>
</head>
<body>
    <div id="main" style="height:400px"></div>
    <script type="text/javascript">
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

    var arr = new Array();
    var index = 0;
    <c:forEach items="${pres}" var="goods">
        arr[index++] = ${goods.confirmed};
    </c:forEach>

    // 指定图表的配置项和数据
    var option = {
        title: {
            text: '全国疫情统计'
        },
        tooltip: {
            show: true
        },
        legend: {
            data:['患者数']
        },
        xAxis : [
            {
                type : 'category',
                data : [
                    <c:forEach items="${pres}" var="g">
                    ["${g.name}"],
                    </c:forEach>
                ]
            }
        ],
        yAxis : [
            {
                type : 'value'
            }
        ],
        series : [
            {
                name:'患者数',
                type:'bar',
                data: arr
            }
        ]
    };

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option);
</script>
</body>
</html>

<%@ 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">
<script src="${pageContext.request.contextPath}/static/js/jquery-1.12.1.js" type="text/javascript"></script>
    <script src="${pageContext.request.contextPath}/static/bootstrap-3.3.5-dist/js/bootstrap.js" type="text/javascript"></script>
    <link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/bootstrap-3.3.5-dist/css/bootstrap.css" />
<div class="navbar navbar-default" style="padding:20px  0 10px;  margin: 0 ;">
<div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed"
            data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
            aria-expanded="false">
            <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span>
            <span class="icon-bar"></span> <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="#">全国疫情统计可视化地图</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->

    <!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid --> 
</div>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>浏览需求</title>
</head>
<body>
<%
        Object message = request.getAttribute("message");
        if (message != null && !"".equals(message)) {
    %>
    <script type="text/javascript">
               alert("<%=request.getAttribute("message")%>");
    </script>
    <%
        }
    %>
    <div align="center">
        <h1>各省市疫情统计表</h1>
        <br>
        日期范围<input type="date" id="btime" name="btime">-<input type="date" id="etime" name="etime">
        <button type="button" class="btn btn-info" onclick="checkfind()">查询</button>&nbsp;&nbsp;&nbsp;&nbsp;
        <br><br>
        <table>
          <thead>
            <tr>
                <th>编号</th>
              <th>日期</th>
              <th>省名</th>
              <th>市名</th>
              <th>确诊人数</th>
              <th>治愈人数</th>
              <th>死亡人数</th>
            </tr>
          </thead>
          <tbody>
          <c:forEach items="${pres}" var="item">
            <tr class="active">
            <td>${item.id}</td>
              <td>${item.date}</td>
              <td>${item.name}</td>
              <td>${item.city}</td>
              <td>${item.confirmed}</td>
              <td>${item.cured}</td>
              <td>${item.dead}</td>
           </tr>
          </c:forEach>
          </tbody>
        </table>
    </div>
<script type="text/javascript">

function checkfind()
{
    var btime=document.getElementById("btime").value;
    var etime=document.getElementById("etime").value;
    if(btime==""||etime==""||(btime==""&&etime==""))
    {
        alert("请填写时间");
        return ;
    }
    else
    {
        window.location.href = "checkfind?btime="+btime+"&etime="+etime;
    }
}

</script>
</body>
</html>

<%@ 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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<div>
      
        <form action="xinxiServlet?method=select" method="post" onsubmit="return check()">
            <div >
                查询时间<input type="data" id="data" name="data"/>
            </div>
             <div >
                <button type="submit" class="b">查&nbsp;询</button>
            </div>
        </form>
    </div>
    <script type="text/javascript">
        function check() {
            var data = document.getElementById("data");;
          
            
            //非空
            if(data.value == '') {
                alert('请填写时间');
                return false;
            }
        }
    </script>
</body>
</html>