java 时间戳转化

前几天写东西的需要转化时间戳，就去看了下。写完了，就在这记录下

public class TestJob {
    private static Calendar calendar = Calendar.getInstance();
    private static Lock lock = new ReentrantLock();

    public static void main(String[] args) throws ParseException {
        //获取当前时间的年月日时分秒毫秒周
        Date currentTime = new Date();
        System.out.println(currentTime);
        int[] res = formatDate2IntArray(currentTime);
        for (int i =0;i<res.length;i++){
            System.out.println(res[i]);
        }
        //获取当前毫秒
        System.out.println(System.currentTimeMillis());


        //把xx-xx-xx 这种格式的时间转化为时间戳
        Long startTime = null;
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");//小写的mm表示的是分钟
        String dstr = "2017-5-21 12:00:01 002";
        startTime = sdf.parse(dstr).getTime();
        System.out.println(startTime);

    }

    public static int[] formatDate2IntArray(Date date) {
        int[] result = new int[9];

        try {
            lock.lock();
            calendar.setTime(date);
            int year = calendar.get(1);
            int mon = calendar.get(2) + 1;
            int day = calendar.get(5);
            int hour = calendar.get(11);
            int min = calendar.get(12);
            int sec = calendar.get(13);
            int milli = calendar.get(14);
            int wednesday = calendar.get(4);
            int dyaOfWeek = calendar.get(7);
            result[0] = year;
            result[1] = mon;
            result[2] = day;
            result[3] = hour;
            result[4] = min;
            result[5] = sec;
            result[6] = milli;
            result[7] = wednesday;
            result[8] = dyaOfWeek;
        } finally {
            lock.unlock();
        }

        return result;
    }
}

获取年月日那个方法，是公司前辈封好的，我又加了周几的参数。其他的就可以直接用了。