Java版疫情地图
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了Java版疫情地图，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含21576字，纯文字阅读大概需要31分钟。
内容图文
Java版疫情地图
废话不多说直接上图
如何实现
一、云服务的搭建
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选择一个云服务器（我选的阿里云）腾讯、阿里、网易等等很多而且学生认证可以免费使用，综合各种服务器可以白嫖两年很nice；
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选中阿里云后，进行学生认证，然后进行一些简单的云计算考试就可以白嫖啦，具体步骤请看知乎链接阿里云学生认证免费领取一台6*2个月云服务器，学生"在家实践"计划；
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白嫖到服务器的操作系统要选择宝塔Liunx哦，之后还需要对服务器做一些简单的配置，首先关闭服务器，进行安全组管理，网络和安全组，点安全组配置，点击配置规则，点进去后进行修改和添加，优先级为1的是需要添加的，8888端口号为宝塔Liunx管理系统的端口，80和443就不做介绍，宝塔Liunx的管理地址要写自己的地址防止被人篡改信息，自己的在ip直接在百度上查ip即可。
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然后重启服务器进行远程连接,密码为当初白嫖服务器时的密码。
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输入bt default获取宝塔liunx的内外网地址、用户名和密码,选在外网地址登录（如果登陆不上去说明第三步8888端口号对应地址不正确），点击应用商店查找Tomcat下载；
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下载好后在已安装中找到Tomcat，点击文件夹图标，记得将端口改为80，默认8080，改好后重启Tomcat，测试你的地址会出来Tomcat页面，然后将应用代码放入webapps/ROOT中；
10.具体代码在下面，最后功能实现；
代码部分
index.jsp的代码：
<%@ page session="false" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
<%@ page import="java.net.URL"%>
<%@ page import="java.net.URLConnection"%>
<%@ page import="java.io.InputStream"%>
<%@ page import="java.io.InputStreamReader"%>
<%@ page import="java.io.BufferedReader"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>疫情地图</title>
<script type="text/javascript">
<%
//1. 先准备一个URL类的对象u
URL url = new URL("https://zaixianke.com/yq/all");
//2. 打开服务器，得到链接对象conn
URLConnection conn = url.openConnection();
//3. 获取加载数据的字节输入流 is
InputStream is = conn.getInputStream();
//4. 将is装饰成为能一次读取的一行的字数输入流br
BufferedReader br = new BufferedReader(new InputStreamReader(is,"UTF-8"));
//5. 加载一行数据
String text = br.readLine();
//6. . 释放资源
br.close();
%>
//1.准备疫情数据
var data = <%=text%>;
</script>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/echarts/4.7.0/echarts.min.js"></script>
<script src="https://cdn.zaixianke.com/china.js"></script>
<script src="https://cdn.zaixianke.com/world.js"></script>
</head>
<body>
<div id="main" style="width:100%;height:600px"></div>
<div style="text-align:center">
<a style="color:#333" class="control" href="javascript:updateMap(0);">国内累计</a>
<a style="color:#333" class="control" href="javascript:updateMap(1);">国内新增</a>
<a style="color:#333" class="control" href="javascript:updateMap(2);">全球累计</a>
<a style="color:#333" class="control" href="javascript:updateMap(3);">全球新增</a>
</div>
<script src="control.js"></script>
</body>
</html>
control.js的代码
//1.准备疫情数据
var data = 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zoom:1.2,
type:'map',
map:'china',
roam:true,
label:{
show:true,
formatter:'{b}',//b数据名，c数据值
fontSize:8
},
data:data.today
}
]
};
break;
}
case 2:{
opt = {
//设置标题
title:{
text:'全球各国累计数据',
subtext:'嘉嘉',
sublink:'https://www.kaikeba.com'
},
//数据提示窗口
tooltip:{
trigger:'item',
formatter:function(params,ticket,callback){
if(params.data)
return params.name+'<br/>'+params.data.value+'<人>';
else
return params.name+'<br/>未公布疫情信息';
}
},
//设置视觉映射方案
visualMap:{
min:1,
max:1500000,
text:['严重','轻微'],
realtime:true,
calculable:true,
inRange:{
color:['rgba(222,0,0,0.2)','rgba(160,0,0,1)']
}
},
//绑定具体数据，以及对其地图调整
series:[
{
name:'各国家确诊病例',
zoom:1.2,
type:'map',
map:'world',
roam:true,
label:{
show:true,
formatter:function(params,ticked,callback){
if(params.data && params.data.value>100000 || params.name=='中国')
return params.name;
else
return '';
},
fontSize:8
},
data:data.g_data
}
]
};
break;
}
case 3:{
opt = {
//设置标题
title:{
text:'全球各国新增数据',
subtext:'嘉嘉',
sublink:'https://www.kaikeba.com'
},
//数据提示窗口
tooltip:{
trigger:'item',
formatter:function(params,ticket,callback){
if(params.data)
return params.name+'<br/>'+params.data.value+'<人>';
else
return params.name+'<br/>未公布疫情信息';
}
},
//设置视觉映射方案
visualMap:{
min:1,
max:30000,
text:['严重','轻微'],
realtime:true,
calculable:true,
inRange:{
color:['rgba(222,0,0,0.2)','rgba(160,0,0,1)']
}
},
//绑定具体数据，以及对其地图调整
series:[
{
name:'各国家新增病例',
zoom:1.2,
type:'map',
map:'world',
roam:true,
label:{
show:true,
formatter:function(params,ticked,callback){
if(params.data && params.data.value>1000 || params.name=='中国')
return params.name;
else
return '';
},
fontSize:8
},
data:data.g_today
}
]
};
break;
}
}
//3.2清空原数据
myChart.clear();
//3.3将配置设置到地图上
myChart.setOption(opt);
}
updateMap(0);
最后
首先，感谢开课吧对我的指导，以及让我明白这些原理的老师们！
我还是一名菜鸟，还需要慢慢的摸索前进，这个地图功能最大问题在于没有做证书认证，导致地图部分无法正常显示需要先访问https://cdn.zaixianke.com/china.js然后才能正常访问到地图，其次其中不足我还在慢慢摸索，望各位同学，大神批评指正，再次感谢大家。
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