package com.iot.common.util;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.util.Date;

public class DateUtil {
    public static void main(String[] args) {

//        System.out.println(System.currentTimeMillis());
//        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
//        System.out.println(df.format(new Date()));// new Date()为获取当前系统时间
//        Timestamp createTime = new Timestamp(new Date().getTime());
//        System.out.println(createTime.toString());

        //获取当天开始及结束时间的时间戳10位秒级、13位毫秒
        //获取当天开始时间
        LocalDateTime today_start = LocalDateTime.of(LocalDate.now(), LocalTime.MIN);//当天零点
        //获取当天结束时间
        LocalDateTime today_end = LocalDateTime.of(LocalDate.now(), LocalTime.MAX);//当天24点

        String td_st_str = today_start.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        String td_ed_str = today_end.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));

        //获取秒数  10位
        long start_time = today_start.toInstant(ZoneOffset.ofHours(8)).getEpochSecond();
        long end_time = today_end.toInstant(ZoneOffset.ofHours(8)).getEpochSecond();

        //获取毫秒数 13位
        long start_time_mil = today_start.toInstant(ZoneOffset.of("+8")).toEpochMilli();
        long end_time_mil = today_end.toInstant(ZoneOffset.of("+8")).toEpochMilli();

        System.out.println(td_st_str);
        System.out.println(td_ed_str);
        System.out.println(start_time);
        System.out.println(end_time);
        System.out.println(start_time_mil);
        System.out.println(end_time_mil);


    }

}