package com.zy.asrs.framework.common;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Objects;
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import java.util.concurrent.TimeUnit;
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/**
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* 时间工具类
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* Created by vincent on 2019-04-15
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*/
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public class DateUtils {
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public final static String yyyyMMdd_C="yyyy年MM月dd日";
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public final static String yyyyMM_F="yyyy-MM";
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public final static String yyyyMMdd_F="yyyy-MM-dd";
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public final static String yyyyMMddHHmmss_F="yyyy-MM-dd HH:mm:ss";
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public final static String yyyyMMddHHmmsssss_F="yyyy-MM-dd HH:mm:ss,SSS";
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public final static String yyyy="yyyy";
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public final static String yyyyMM="yyyyMM";
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public final static String yyyyMMdd="yyyyMMdd";
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public final static String yyyyMMddHH="yyyyMMddHH";
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public final static String yyyyMMddHHmmss="yyyyMMddHHmmss";
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public final static String YYMMDDHHMMSS="YYMMDDHHMMSS";
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public final static String yyyyMMddHHmmsssss="yyyyMMddHHmmssSSS";
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/**
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* date ==>> string
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*/
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public static String convert(Date date, String pattern){
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return new SimpleDateFormat(pattern).format(date);
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}
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public static String convert(Date date){
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return convert(date, yyyyMMddHHmmss_F);
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}
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/**
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* string ==>> date
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*/
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public static Date convert(String str, String pattern){
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if (str.length() < pattern.length()){
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throw new RuntimeException("时间解析失败 ==>> "+str);
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}
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if (str.length() > pattern.length()){
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str = str.substring(0, pattern.length());
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}
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SimpleDateFormat format = new SimpleDateFormat(pattern);
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Date date;
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try {
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date = format.parse(str);
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} catch (ParseException e) {
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throw new RuntimeException("时间解析失败 ==>> "+str);
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}
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return date;
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}
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public static Date convert(String str){
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return convert(str, yyyyMMddHHmmss_F);
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}
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/**
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* 两个date之间相差的天数，不满一天算一天
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*/
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public static int diff(Date date1, Date date2){
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return getDaysByTimestamp(Math.abs(date2.getTime() - date1.getTime()));
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}
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public static long diffToMinute(Date date1, Date date2){
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return Math.abs(date2.getTime() - date1.getTime())/1000/60;
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}
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public static long diffToSeconds(Date date1, Date date2){
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return Math.abs(date2.getTime() - date1.getTime())/1000;
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}
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private static int getDaysByTimestamp(long timestamp){
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double daysPoint = Arith.divides(2, timestamp, (1000 * 3600 * 24));
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int daysPoint1 = (int) daysPoint;
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double daysPoint2 = (double) daysPoint1;
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if (daysPoint > daysPoint2){
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return daysPoint1 + 1;
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}
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return daysPoint1;
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}
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/**
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* 入参date距离现在的秒数
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*/
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public static int diffToNow(Date date){
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long diff = new Date().getTime() - date.getTime();
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return (int) (Math.abs(diff) / 1000);
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}
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/**
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* 当前时间戳（单位：秒）
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*/
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public static String createTimeStamp() {
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return Long.toString(System.currentTimeMillis() / 1000);
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}
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/**
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* 时间计算函数
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* @param date 被计算时间实例
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* @param val 计算值
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* @param timeUnit 计算值单位
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* @param subtraction 减法布尔 true：当前函数为减法计算，false：反之
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* @return 计算结果 Date
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*/
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public static Date calculate(Date date, Long val, TimeUnit timeUnit, boolean subtraction){
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if (Objects.isNull(date) || Objects.isNull(val) || Objects.isNull(timeUnit)){
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return null;
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}
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return new Date(subtraction?date.getTime()-timeUnit.toMillis(val):date.getTime()+timeUnit.toMillis(val));
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}
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public static Date calculate(Date date, Long val, TimeUnit timeUnit){
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return calculate(date, val, timeUnit, false);
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}
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/**
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* 时间对象DateEntity
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*/
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public static DateEntity getDateEntity(Date date){
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Calendar cal = Calendar.getInstance();
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cal.setTime(date);
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DateEntity dateEntity = new DateEntity();
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dateEntity.setYear(cal.get(Calendar.YEAR));
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dateEntity.setMonth(cal.get(Calendar.MONTH));
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dateEntity.setDay(cal.get(Calendar.DATE));
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dateEntity.setHour(cal.get(Calendar.HOUR_OF_DAY));
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dateEntity.setMinute(cal.get(Calendar.MINUTE));
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dateEntity.setSecond(cal.get(Calendar.SECOND));
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return dateEntity;
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}
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static class DateEntity {
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int year;
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int month;
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int day;
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int hour;
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int minute;
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int second;
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public int getYear() {
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return year;
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}
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public void setYear(final int year) {
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this.year = year;
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}
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public int getMonth() {
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return month;
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}
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public void setMonth(final int month) {
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this.month = month + 1;
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}
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public int getDay() {
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return day;
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}
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public void setDay(final int day) {
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this.day = day;
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}
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public int getHour() {
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return hour;
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}
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public void setHour(final int hour) {
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this.hour = hour;
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}
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public int getMinute() {
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return minute;
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}
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public void setMinute(final int minute) {
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this.minute = minute;
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}
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public int getSecond() {
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return second;
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}
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public void setSecond(final int second) {
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this.second = second;
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}
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}
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}
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