07移动端疫情展示
要求
要求开发一款移动端的全世界疫情实时查询系统。
要求将前两周的项目合并为一个完整的项目。
采用统一的数据库。（建议MySQL数据库）
实现从数据采集、数据存储、数据查询（WEB端和移动端）一体全世界实时疫情查询系统。
以本机数据库为服务器端，web端和移动端连接远程数据库实现数据共享，要求数据库表格式统一化。
查询显示当前最新时间的数据，可以查询任一时间任一地点的数据。该系统要求在服务器端发布，可以通过IP地址访问。
设计思路
1.数据准备，使用python从网上爬取世界疫情的数据，并存入mysql数据库
2.数据展示，从Android发送http请求到web端web端在从数据库获取数据
3.使用volley的stringrequest向web请求数据（json）
4.使用Gson进行数据转换
代码：
import requests
import time, json
import sys;
import pymysql
def get_wangyi_request():
url = 'https://c.m.163.com/ug/api/wuhan/app/data/list-total'
headers = {
'accept': '*/*',
'accept-encoding': 'gzip,deflate,br',
'accept-language': 'en-US,en;q=0.9,zh-CN;q = 0.8,zh;q = 0.7',
'origin': 'https://wp.m.163.com',
'referer': 'https://wp.m.163.com/',
'sec-fetch-dest': 'empty',
'sec-fetch-mode': 'cors',
'sec-fetch-site': 'same-ite',
'user-agent': 'Mozilla/5.0(WindowsNT10.0;Win64;x64) AppleWebKit/37.36 (KHTML, likeGecko) Chrome/82.0.4056.0 Safari/537.36 Edg/82.0.432.3'
}
result = requests.get(url, headers=headers)
return result
def print_mess1(string: str, dict1total: dict):
sys.stdout.write(string + '确诊: ' + str(dict1total['confirm'] if dict1total['confirm'] != None else 0))
sys.stdout.write(' ')
sys.stdout.write(string + '疑似: ' + str(dict1total['suspect'] if dict1total['suspect'] != None else 0))
sys.stdout.write(' ')
sys.stdout.write(string + '治愈: ' + str(dict1total['heal'] if dict1total['heal'] != None else 0))
sys.stdout.write(' ')
sys.stdout.write(string + '死亡: ' + str(dict1total['dead'] if dict1total['dead'] != None else 0))
if __name__ == '__main__':
result = get_wangyi_request()
json_str = json.loads(result.text)['data']
# print(json_str.keys())
# dict_keys(['chinaTotal', 'chinaDayList', 'lastUpdateTime', 'areaTree'])
print(json_str['lastUpdateTime'])
countryname_list = json_str['areaTree']
# 每个省份包含如下的键
# dict_keys(['today', 'total', 'extData', 'name', 'id', 'lastUpdateTime', 'children'])
conn = pymysql.connect(
host='localhost', # 我的IP地址
port=3306, # 不是字符串不需要加引号。
user='root',
password='123456',
db='test',
charset='utf8'
)
cursor = conn.cursor() # 获取一个光标
confirmed_total = 0
suspected_total = 0
dead_total = 0
healed_total = 0
id = 0;
for dict in countryname_list:
sql = 'insert into yiqing_world (countryname,confirmed,suspected,dead,healed,lastUpdateTime,id) values (%s,%s,%s,%s,%s,%s,%s);'
countryname = dict['name']
confirmed = dict['total']['confirm']
confirmed_total += confirmed
suspected = dict['total']['suspect']
suspected_total += suspected
healed = dict['total']['heal']
dead_total += healed
dead = dict['total']['dead']
dead_total += dead
lastUpdateTime = dict['lastUpdateTime']
id=id+1
sys.stdout.write( dict['name'] + ' ')
cursor.execute(sql, [countryname,confirmed,suspected,dead,healed,lastUpdateTime,id])
print()
conn.commit()
cursor.close()
conn.close()
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import java.util.List;
public class MainActivity extends Activity {
private EditText et_name;
private Button btn_get_data;
private TextView tv_data;
private RadioGroup rg_check;
private RadioButton rb_date;
private RadioButton rb_country;
private String condition;
@SuppressLint("HandlerLeak")
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case 0x11:
String s = (String) msg.obj;
tv_data.setText(s);
break;
case 0x12:
String ss = (String) msg.obj;
tv_data.setText(ss);
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 控件的初始化
btn_get_data = findViewById(R.id.btn_get_data);
tv_data = findViewById(R.id.tv_data);
et_name = findViewById(R.id.et_name);
rb_date = findViewById(R.id.rb_date);
rb_country = findViewById(R.id.rb_country);
rg_check = findViewById(R.id.rg_select);
rg_check.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group, int checkedId) {
//如果‘时间’这个单选按钮被选中了
if(rb_date.getId()==checkedId){
//弹出吐司通知
//Toast.makeText(MainActivity.this, rb_date.getText().toString(), Toast.LENGTH_LONG).show();
//获取选中按钮对应的文本信息
condition = rb_date.getText().toString().trim();
}else if(rb_country.getId()==checkedId){
//Toast.makeText(MainActivity.this, rb_country.getText().toString(), Toast.LENGTH_LONG).show();
condition = rb_country.getText().toString().trim();
}
}
});
//如果没有选择默认按时间查询
if (condition == null){
condition = rb_date.getText().toString().trim();
}
setListener();
}
/**
* 设置监听
*/
private void setListener() {
// 按钮点击事件
btn_get_data.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 创建一个线程来连接数据库并获取数据库中对应表的数据
new Thread(new Runnable() {
@Override
public void run() {
String name = et_name.getText().toString().trim();
//调用数据库帮助类中的方法取数据
List<information> list = DBUtils.search(condition,name);
Message message = handler.obtainMessage();
if (list != null) {
String s = "";
for (int i = 0; i < list.size(); i++) {
s += "国家：" + list.get(i).getCountryname() + " ";
s += "最新更新时间:" + list.get(i).getLastUpdateTime() + " ";
s += "确诊人数为: " + list.get(i).getConfirmed() + " ";
s += "治愈人数为: " + list.get(i).getHealed() + " ";
s += "死亡人数为: " + list.get(i).getDead() + " " + " ";
}
//0x11、0x12消息的定位标志
message.what = 0x12;
message.obj = s;
} else {
message.what = 0x11;
message.obj = "查询结果为空";
}
handler.sendMessage(message);
// 发消息通知主线程更新UI
}
}).start();
}
});
}
}
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
/**
* 数据库工具类：连接数据库用、获取数据库数据用
* 相关操作数据库的方法均可写在该类
*/
public class DBUtils {
private static String driver = "com.mysql.jdbc.Driver";// MySql驱动
private static String user = "root";// 用户名
private static String password = "123456";// 密码
private static Connection getConn(String dbName) {
Connection connection = null;
try {
Class.forName(driver);// 动态加载类
String ip = "192.168.1.6";// 写成本机地址，不能写成localhost，同时手机和电脑连接的网络必须是同一个
// 尝试建立到给定数据库URL的连接
connection = DriverManager.getConnection("jdbc:mysql://" + ip + ":3306/" + dbName,
user, password);
} catch (Exception e) {
e.printStackTrace();
}
return connection;
}
public static List<information> search(String condition, String country_name){
List<information> list = new ArrayList<>();
Connection connection = getConn("test");
String sql = "";
//System.out.println(condition);
//选择条件
if(condition.equals("国家")){
//模糊查询
sql = "select * from yiqing_world where countryname like ?";
}
if(condition.equals("时间")){
sql = "select * from yiqing_world where lastUpdateTime like ?";
}
System.out.println(country_name);
if(connection !=null){
try {
PreparedStatement ps = connection.prepareStatement(sql);
if(ps!=null){
ps.setString(1,"%"+country_name+"%");
ResultSet rs = ps.executeQuery();
if(rs!=null){
while(rs.next()){
information worldData = new information();
worldData.setId(rs.getInt("id"));
worldData.setCountryname(rs.getString("countryname"));
worldData.setConfirmed(rs.getString("confirmed"));
worldData.setSuspected(rs.getString("suspected"));
worldData.setDead(rs.getString("dead"));
worldData.setHealed(rs.getString("healed"));
worldData.setLastUpdateTime(rs.getString("lastUpdateTime"));
list.add(worldData);
}
connection.close();
ps.close();
return list;
}else{
return null;
}
}else{
return null;
}
} catch (SQLException e) {
e.printStackTrace();
return null;
}
}else{
return null;
}
}
}
public class information {
private int id;
private String countryname;
private String confirmed;
private String suspected;
private String dead;
private String healed;
private String lastUpdateTime;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCountryname() {
return countryname;
}
public void setCountryname(String countryname) {
this.countryname = countryname;
}
public String getConfirmed() {
return confirmed;
}
public void setConfirmed(String confirmed) {
this.confirmed = confirmed;
}
public String getSuspected() {
return suspected;
}
public void setSuspected(String suspected) {
this.suspected = suspected;
}
public String getDead() {
return dead;
}
public void setDead(String dead) {
this.dead = dead;
}
public String getHealed() {
return healed;
}
public void setHealed(String healed) {
this.healed = healed;
}
public String getLastUpdateTime() {
return lastUpdateTime;
}
public void setLastUpdateTime(String lastUpdateTime) {
this.lastUpdateTime = lastUpdateTime;
}
}
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:padding="15dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RadioGroup
android:id="@+id/rg_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="20dp"
android:layout_marginTop="20dp">
<RadioButton
android:id="@+id/rb_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="时间"
android:textSize="20sp"
android:checked="true"/>
<RadioButton
android:id="@+id/rb_country"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="国家"
android:textSize="20sp"/>
</RadioGroup>
<EditText
android:id="@+id/et_name"
android:padding="10dp"
android:textSize="16sp"
android:gravity="center"
android:hint="输入要查询的内容"
android:layout_below="@id/rg_select"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/btn_get_data"
android:layout_margin="15dp"
android:textSize="16sp"
android:text="查询"
android:layout_below="@id/et_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/tv_data"
android:padding="10dp"
android:textSize="16sp"
android:gravity="center"
android:text="内容"
android:layout_below="@+id/btn_get_data"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
</ScrollView>