Java data acquisition OneNet

package com.example.demo01.UDPServer;

import com.example.demo01.dao.Device.DeviceMapper;
import com.example.demo01.model.Device;
import org.springframework.beans.factory.annotation.Autowired;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.io.*;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.sql.*;
import java.text.SimpleDateFormat;


public class JavaTCP implements Runnable {
    @Autowired
    @Resource
    private DeviceMapper tempMapper_tcp_save;
    public static JavaTCP tcpServer;

    @PostConstruct
    public void init() {
        tcpServer = this;
        tcpServer.tempMapper_tcp_save = this.tempMapper_tcp_save;
    }

    static String temp;
    static String co2;
    static String gas;
    static String state;
    static String time;

    private static final String URI = "jdbc:mysql://localhost:3306/test?"
            + "user=root&password=123456&useUnicode=true&characterEncoding=UTF-8";

    private static final String DRIVER = "com.mysql.jdbc.Driver";

    public static void addTemp(String temp, String co2, String gas, String state) {
        Device device = new Device();
        device.setTemp(JavaTCP.temp);
        device.setCo(JavaTCP.co2);
        device.setGas(JavaTCP.gas);
        device.setFire(JavaTCP.state);
        tcpServer.tempMapper_tcp_save.addTemp(device);
    }

    public static String getHtmlInfoFromUrl(String url, String encoding) {
        try {
            URL url1 = new URL(url);
            //打开和url之间的连接
            HttpURLConnection connection = (HttpURLConnection) url1.openConnection();
            //添加请求headers
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("api-key", "****"); //存放api-key
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestMethod("GET");//GET和POST必须全大写
            connection.connect();
            //获取URLConnection对象对应的输入流
            InputStream is = connection.getInputStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            String str = "";
            while ((str = br.readLine()) != null) {     //读取字符串
                str = new String(str.getBytes(), "UTF-8");
                System.out.println(str);
                temp = str.substring(99, 101);
                co2 = str.substring(170, 171);
                gas = str.substring(242, 244);
                state = str.substring(302, 303);
            }
            Thread.sleep(100);
            is.close();//关闭流
            connection.disconnect();  //断开连接
        }catch (Exception e){
            e.printStackTrace();
        }
        return "温度："+ temp + "二氧化碳"+ co2 +"氨气:" + gas + "设备状态:" + state;
    }

    @Override
    public void run() {
        while(true){
            try {
                // 加载数据库驱动
                Class.forName("com.mysql.jdbc.Driver");
                // 声明数据库view的URL
                String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false";
                // 数据库用户名
                String user = "root";
                // 数据库密码
                String password = "123456";
                // 建立数据库连接，获得连接对象conn
                Connection conn = DriverManager.getConnection(url, user, password);
                getHtmlInfoFromUrl("http://api.heclouds.com/devices/**你自己的设备id**/datapoints","UTF-8");
                System.out.println("温度:" + temp);
                System.out.println("二氧化碳:" + co2);
                System.out.println("氨气:" + gas);
                System.out.println("设备状态:" + state);
                Date date =new Date(System.currentTimeMillis());
                SimpleDateFormat sdf =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                time =sdf.format(date);
                System.out.println(time);

                String sql = "insert into device_table (temp,co2,gas,state,time) values(?,?,?,?,?)"; // 生成一条sql语句
                // 创建一个Statment对象
                PreparedStatement ps = conn.prepareStatement(sql);
                ps.setString(1, temp);
                ps.setString(2, co2);
                ps.setString(3, gas);
                ps.setString(4, state);
                ps.setString(5, time);
                // 执行sql语句
                ps.executeUpdate();
                // 关闭数据库连接对象
                conn.close();
                System.out.println("SQL插入完毕！");
                Thread.sleep(10000);

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}