Java DateUtil日期工具类源码

男娘i 2023-10-07 11:29 50阅读 0赞

package com.util;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    public class DateUtil {
        public static String minuteFormat="yyyy-MM-dd HH:mm";
        public static String secondFormat="yyyy-MM-dd HH:mm:ss";
        public static String dayFormat="yyyy-MM-dd";
        public static String zeroTime="0000-00-00 00:00:00";
        //得到当前时间（精确到天）
        public static String getCurrentTimeByDay(){
            return getCurrentTime(dayFormat);
        }
        //得到当前时间（精确到分钟）
        public static String getCurrentTimeByMinute(){
            return DateUtil.getCurrentTime(minuteFormat);
        }
        //得到当前时间（精确到秒）
        public static String getCurrentTimeBySecond(){
            return DateUtil.getCurrentTime(secondFormat);
        }
        //得到当前时间（自定义格式）
        public static String getCurrentTime(String format){
            Date date=new Date();
            SimpleDateFormat sdf=new SimpleDateFormat(format);
            String currentTime=sdf.format(date);
            return currentTime;
        }
        //计算当前时间差（精确到秒）
        public static long calcTimeDifferenceBySecond(String oldTime){
            return DateUtil.calcTimeDifferenceBySecond(oldTime,DateUtil.getCurrentTimeBySecond());
        }
        //计算时间差（精确到秒）
        public static long calcTimeDifferenceBySecond(String oldTime,String newTime){
            SimpleDateFormat simpleDateFormat=new SimpleDateFormat(secondFormat);
            long seconds=0;
            try {
                Date newDate = simpleDateFormat.parse(newTime);
                Date oldDate=simpleDateFormat.parse(oldTime);
    
    			//得到时间差
                long diff=newDate.getTime()-oldDate.getTime();//ms
                seconds=diff/1000;
            } catch (ParseException e) {
                e.printStackTrace();
            }
            return seconds;
        }
        //计算当前时间差（精确到分钟）
        public static long calcTimeDifferenceByMinute(String oldTime){
            return DateUtil.calcTimeDifferenceBySecond(oldTime)/60;
        }
        //计算时间差（精确到分钟）
        public static long calcTimeDifferenceByMinute(String oldTime,String newTime){
            return DateUtil.calcTimeDifferenceBySecond(oldTime, newTime)/60;
        }
        //毫秒转HH小时mm分钟ss秒
        public static String millisToHHmmss(long millis){
            long secends=millis/1000;
    		String timeStr = null;
    		int hour = 0;
    		int minute = 0;
    		int second = 0;
    		if (secends<= 0) {
    			return "0秒";
    		} else {
    			minute = secends/ 60;
    			if (minute == 0) {
    				String secendStr=seconds<10?"0"+seconds:seconds+"";
    				timeStr = secendStr + "秒";
    			} else if (minute < 60) {
    				second = seconds% 60;
    				timeStr = Integer.toString(minute) + "分" + Integer.toString(second) + "秒";
    			} else {
    				hour = minute / 60;
    				minute = minute % 60;
    				second = seconds- hour * 3600 - minute * 60;
    				timeStr = Integer.toString(hour) + "小时" + Integer.toString(minute) + "分" + Integer.toString(second)+ "秒";
    			}
    		}
    		return timeStr;
        }
    /**
    	 * 毫秒转时间
    	 * 
    	 * @param timeMillis
    	 * @return
    	 */
    	public static String getMillisToDataTime(String timeMillis, String format) {
    		SimpleDateFormat sdf = new SimpleDateFormat(format);
    		return sdf.format(Long.parseLong(timeMillis));
    	}
    }