Jmeter-获取当天00:00的时间戳

//【1】当前凌晨时间戳

long nowTime =System.currentTimeMillis();
long todayStartTime =nowTime - ((nowTime + TimeZone.getDefault().getRawOffset()) % (24 * 60 * 60 * 1000L));
vars.put("beginTime",String.valueOf(todayStartTime));

//【2】当前凌晨时间戳

import java.text.SimpleDateFormat;
import java.util.Date;
import java.text.*;
    //当天日期
    Date date = new Date();
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
    String today = simpleDateFormat.format(date.getTime());

    //1、当天凌晨(毫秒)
    long daytime1 = simpleDateFormat.parse(today).getTime();
    vars.put("beginTime",String.valueOf(daytime1));

 

//【3】当前凌晨时间戳

long now = System.currentTimeMillis() / 1000l;
long daySecond = 60 * 60 * 24;
long dayTime4 = (now - (now + 8 * 3600) % daySecond) * 1000;
vars.put("beginTime",String.valueOf(dayTime4));

//【4】当前凌晨时间戳

  Calendar c = Calendar.getInstance();
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);
    long daytime3 = c.getTimeInMillis();
    vars.put("beginTime",String.valueOf(daytime3));

　　//获取当天23:59:59
　　Calendar c = Calendar.getInstance();
　　c.set(Calendar.HOUR_OF_DAY, 23);
　　c.set(Calendar.MINUTE, 59);
　　c.set(Calendar.SECOND, 59);
　　c.set(Calendar.MILLISECOND, 0);
　　long daytime31 = c.getTimeInMillis();
　　vars.put("endTime",String.valueOf(daytime31));