2.模拟数据

日期模拟

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Random;

public class DataUtil {
    public static void main(String[] args) {
        String s = getTodayDate();
        System.out.println(s);
    }

    // 获取今天的日期  2022-09-13
    public static String getTodayDate() {
        Calendar cal = Calendar.getInstance();
        Date date = cal.getTime();
        SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd");
        String format = dfs.format(date);
        return format;
    }

    // 获取今天的随机时间  2022-09-13 8:00:00
    public static String getTodayTime() {
        Random random = new Random();
        String date = getTodayDate();
        String hour = random.nextInt(24) + "";
        if (Integer.parseInt(hour) <= 9) {
            hour = "0" + hour;
        }
        String min = random.nextInt(60) + "";
        if (Integer.parseInt(min) <= 9) {
            min = "0" + min;
        }

        String seconds = random.nextInt(60) + "";
        if (Integer.parseInt(seconds) <= 9) {
            seconds = "0" + seconds;
        }

        String time = date + " " + hour + ":" + min + ":" + seconds;
        return time;
    }
}

车流量数据模拟

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class CarFlow {
    public static void main(String[] args) throws IOException {
        BufferedWriter bw = new BufferedWriter(
                new FileWriter("G:/monitor_car_flow.csv", true));

        // 1. 获取今天的日期
        String todayDate = DataUtil.getTodayDate();
        String[] chePaiPresix =
                {"晋A", "晋A", "晋A", "晋A", "晋A", "晋A",
                "晋A", "晋A", "晋A", "晋A", "晋A", "晋A",
                "晋B", "晋C", "晋D", "晋E", "晋K", "晋K",
                "晋K", "晋K", "晋K", "晋K", "晋K", "晋K",
                "晋K", "晋K", "晋K", "晋K", "晋M", "晋L"};
        char[] array =
                {'0', '1', '2', '3', '4', '5', '6', '7',
                '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
                'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
                'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
                'W', 'X', 'Y', 'Z'};
        Random random = new Random();

        // 模拟多少条数据 100000
        List<String> list = new ArrayList<String>();
        for (int i = 0; i < 1000; i++) {
            // 7. roadId
            String roadId = 1 + random.nextInt(100) + "";
            // 8. areaId
            String areaId = 1 + random.nextInt(6) + "";
            // 2. 随机生成卡口id  0~100
            String monitorId = areaId + "-" + roadId + "-" + random.nextInt(101);
            // 3. 摄像头id 2~8个 编号从1开始
            int camera_id = 1+random.nextInt(8);

            int num = 1 + random.nextInt(1000);
            for (int j = 0; j < num; j++) {
                // 4. 车牌号  模拟山西的车牌号  晋A/B/C/D/H/E/K/M/L  5位
                String che = chePaiPresix[random.nextInt(chePaiPresix.length)];
                String chepai = che + array[random.nextInt(array.length)] +
                        array[random.nextInt(array.length)]
                        + array[random.nextInt(array.length)]
                        + array[random.nextInt(array.length)]
                        + array[random.nextInt(array.length)];
                // 5. 年月日 时分秒
                String actionTime = DataUtil.getTodayTime();
                // 6. 车速
                String speed = random.nextInt(120) + "";


                // 车辆通过时间
                // 卡口编号
                // 摄像头编号
                // 通过车辆车牌
                // 某个摄像头拍摄时间 单位:秒
                // 通过卡口的速度
                // 道路id
                // 区域id
                String data = todayDate + "," + monitorId + ","
                        + camera_id + "," + chepai + "," + actionTime + ","
                        + speed + "," + roadId + "," + areaId;

                list.add(data);
            }
        }

        // 将每个卡口的摄像头数据打散
        Collections.shuffle(list);
        for (String data: list) {
            bw.write(data);
            bw.newLine();
            bw.flush();
        }

        System.out.println("卡口车流量数据模拟完成");
    }
}

摄像头模拟

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;

/**
 * 摄像头数据模拟
 * 卡扣编号     摄像头编号
 * monitor_id  camera_id
 *
 * 卡口摄像头不一定在车流量数据文件中存在，因为有些道路可能每天就没有车辆通过
 * 或者卡口摄像头损坏了
 */
public class CameraData {
    public static void main(String[] args) throws IOException {
        BufferedWriter bw = new BufferedWriter(new FileWriter("G:/cameras.csv"));
        /**
         * 卡口id  区域id+街道id+卡口编号
         * 摄像头   1-8
         */
        for (int i = 1; i <= 6; i++) {
            for (int j = 1; j <= 100; j++) {
                for (int k = 1; k <=100 ; k++) {
                    for (int l = 1; l <= 8  ; l++) {
                        String monitor_id = i +"-"+ j +"-"+k;
                        String cameraId = l+"";
                        bw.write(monitor_id+","+cameraId);
                        bw.newLine();
                        bw.flush();
                    }
                }
            }
        }
    }
}