package com.nanjing.water.common.util;
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import com.nanjing.water.common.ConstantFactory;
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import java.sql.Timestamp;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.time.Instant;
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import java.util.*;
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/**
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* 日期处理类
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* @author xiangyuanzhang
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* @date 2018-12-25
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*/
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public final class CalendarUtil {
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static final Long ONE_DAYMS = 86400000L;
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private static final int ONE_SECONDS = 1000;
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private CalendarUtil() {
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throw new IllegalStateException("Utility class");
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}
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/**
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* 获取当前时区时间
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* @param origin
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*/
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public static Calendar toLocal(Calendar origin) {
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if(origin == null) {
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return null;
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} else if(origin.getTimeZone().equals(TimeZone.getDefault())) {
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return origin;
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} else {
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Calendar calendar = Calendar.getInstance();
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calendar.setTimeInMillis(origin.getTimeInMillis());
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return calendar;
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}
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}
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public static int daysBetween(Calendar timeStart, Calendar timeEnd) {
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long time1 = timeStart.getTimeInMillis();
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long time2 = timeEnd.getTimeInMillis();
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long betweenDays = (time2 - time1) / ONE_DAYMS;
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return Integer.parseInt(String.valueOf(betweenDays));
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}
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/**
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* 获取当前时间
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*/
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public static Calendar getNow() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(new Date());
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return calendar;
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}
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public static Calendar getNow(int days) {
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Calendar calendar = getNow();
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calendar.add(Calendar.DAY_OF_MONTH, days);
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return calendar;
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}
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public static Calendar fromCalendarInDate(Calendar time) {
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Calendar calendar = null;
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if(time != null) {
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try {
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String ex = toDateStr(time);
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calendar = fromDateStr(ex);
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} catch (Exception e) {
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//TODO log
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}
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}
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return calendar;
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}
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public static Calendar fromMillisInDate(Long ms) {
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Calendar calendar = fromMillis(ms);
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return CalendarUtil.fromCalendarInDate(calendar);
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}
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public static Calendar fromMillis(Long ms) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTimeInMillis(ms);
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return calendar;
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}
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public static Calendar fromTimestamp(Timestamp ts) {
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Calendar calendar = null;
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if(ts != null) {
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calendar = Calendar.getInstance();
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long time = ts.getTime();
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calendar.setTimeInMillis(time);
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}
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return calendar;
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}
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/**
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* 通过yyyy-MM-dd获取日期
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* @param dateStr 日期字符串
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*/
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public static Calendar fromDateStr(String dateStr) {
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return CalendarUtil.fromStr(dateStr, ConstantFactory.STR_DATE);
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}
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/**
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* 通过yyyy-MM-dd HH:mm:ss.SSS获取日期
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* @param dateTimeMSStr 带毫秒的时间字符串
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*/
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public static Calendar fromDateTimeMSStr(String dateTimeMSStr) {
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Calendar calendar = null;
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if(StringUtil.isNotNullOrEmpty(dateTimeMSStr) && !"null".equals(dateTimeMSStr)) {
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calendar = CalendarUtil.fromStr(dateTimeMSStr, ConstantFactory.STR_DATE_FULLMS);
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}
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return calendar;
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}
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/**
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* 通过yyyy-MM-dd HH:mm:ss获取日期
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* @param dateTimeStr 时间字符串
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*/
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public static Calendar fromDateTimeStr(String dateTimeStr) {
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return CalendarUtil.fromStr(dateTimeStr, ConstantFactory.STR_DATE_FULL);
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}
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/**
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* 通过指定时间格式，获取Calendar对象
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* @param dateStr 时间字符串
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* @param format 时间格式
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*/
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public static Calendar fromStr(String dateStr, String format) {
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Calendar calendar;
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try {
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SimpleDateFormat sdf = new SimpleDateFormat(format);
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Date date = sdf.parse(dateStr);
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calendar = Calendar.getInstance();
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calendar.setTime(date);
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return calendar;
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} catch (ParseException var5) {
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//TODO log
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return null;
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}
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}
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public static String toNowDateStr() {
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return CalendarUtil.toDateStr(getNow());
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}
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public static String toNowDateTimeStr() {
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return CalendarUtil.toDateTimeStr(getNow());
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}
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public static String toNowDateTimeMSStr() {
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return CalendarUtil.toDateTimeMSStr(getNow());
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}
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public static String toDateStr(Calendar calendar) {
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return CalendarUtil.toDateTimeStr(calendar, ConstantFactory.STR_DATE);
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}
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public static String toDateTimeStr(Calendar calendar) {
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return CalendarUtil.toDateTimeStr(calendar, ConstantFactory.STR_DATE_FULL);
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}
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public static String toDateTimeMSStr(Calendar calendar) {
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return CalendarUtil.toDateTimeStr(calendar, ConstantFactory.STR_DATE_FULLMS);
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}
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public static String toDateTimeStr(Calendar calendar, String format) {
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if(null == calendar) {
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calendar = CalendarUtil.fromDateTimeStr(ConstantFactory.STR_DATE_DEFAULT);
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}
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SimpleDateFormat formatter = new SimpleDateFormat(format);
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return formatter.format(calendar.getTime());
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}
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public static String toStringByTimestamp(Timestamp ts) {
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Calendar calendar = CalendarUtil.fromTimestamp(ts);
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return CalendarUtil.toDateTimeStr(calendar, ConstantFactory.STR_DATE_FULLMS);
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}
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/**
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* 获取当前时间戳
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* @return 当前时间戳
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*/
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public static Timestamp getNowTimestamp() {
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return new Timestamp(CalendarUtil.nowTimestamp());
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}
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/**
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* 获取当前时间戳
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*/
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public static Long nowTimestamp() {
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return Instant.now().toEpochMilli();
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}
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/**
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* 获取当前时间戳
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*/
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public static String nowTimestampStr() {
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return Long.toString(CalendarUtil.nowTimestamp());
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}
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public static Calendar get1970() {
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Calendar result;
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try {
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result = fromStr("1970-01-01 08:00:01", ConstantFactory.STR_DATE_FULL);
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} catch (Exception e) {
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result = null;
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}
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return result;
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}
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public static Integer getAge(Calendar birthDay) {
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if(birthDay==null) {
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return 0;
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}
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Calendar now = getNow();
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int nowYear = now.get(Calendar.YEAR);
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int nowMonth = now.get(Calendar.MONTH);
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int nowDay = now.get(Calendar.DAY_OF_MONTH);
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int birthDayYear= birthDay.get(Calendar.YEAR);
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int birthDayMonth = birthDay.get(Calendar.MONTH);
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int birthDayDay = birthDay.get(Calendar.DAY_OF_MONTH);
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int age = nowYear - birthDayYear;
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if(nowMonth < birthDayMonth) {
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age--;
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} else if(nowMonth == birthDayMonth && nowDay < birthDayDay) {
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age--;
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} else {
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age = 0;
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}
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return age;
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}
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public static Integer getAge(String birthDay) {
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Calendar cBirthDay = CalendarUtil.fromStr(birthDay, ConstantFactory.STR_DATE);
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return getAge(cBirthDay);
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}
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/**
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* 方法为获取时间段内的所有日期
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* @param dateFrom 时间起
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* @param dateEnd 时间至
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* @return List<Long> 返回该时间段内的所有日期的时间戳队列。
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* @throws ParseException
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*/
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public static List<String> getDates(String dateFrom, String dateEnd) throws ParseException {
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return CalendarUtil.getDates(dateFrom, dateEnd, "-1");
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}
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/**
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* 方法为指定时间段内获取指定周几的所有日期
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* @param dateFrom 时间起
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* @param dateEnd 时间至
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* @param weekDays 需要在时间段中指定查询的周数，建议使用“,”隔开（不隔开也没问题），需要获取时间段内所有日期时参数为"-1"。星期日=0，星期一=1，星期二=2，星期三=3，星期四=4，星期五=5，星期六=6。
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* @return List<Long> 返回符合条件日期的时间戳队列。
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* @throws ParseException
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*/
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public static List<String> getDates(String dateFrom, String dateEnd, String weekDays) throws ParseException {
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boolean isAll = weekDays.contains("-1");
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long time;
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List<String> dateList = new ArrayList<>();
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat(ConstantFactory.STR_DATE);
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dateFrom = simpleDateFormat.format(simpleDateFormat.parse(dateFrom).getTime() - ONE_DAYMS);
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while (true) {
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time = simpleDateFormat.parse(dateFrom).getTime();
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time = time + ONE_DAYMS;
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Date date = new Date(time);
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dateFrom = simpleDateFormat.format(date);
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if (dateFrom.compareTo(dateEnd) <= 0) {
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if (isAll) {
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dateList.add(dateFrom);
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} else {
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Integer weekDay = dayForWeek(date);
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if (weekDays.contains(weekDay.toString())) {
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dateList.add(dateFrom);
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}
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}
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} else {
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break;
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}
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}
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return dateList;
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}
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private static Integer dayForWeek(Date date) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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return calendar.get(Calendar.DAY_OF_WEEK) - 1;
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}
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public static Timestamp get1970Timestamp() {
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Timestamp result;
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try {
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Calendar date = get1970();
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if(null!=date) {
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result = new Timestamp(date.getTimeInMillis());
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} else {
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result = null;
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}
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} catch (Exception e) {
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result = null;
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}
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return result;
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}
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/**
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* 从指定格式时间字符串，获取时间戳
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*/
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public static Timestamp getTimestamp(String dateStr, String format) {
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Long timspamp = Long.parseLong("1000");
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Calendar date = CalendarUtil.fromStr(dateStr, format);
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if(null!=date) {
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timspamp = date.getTimeInMillis();
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}
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return new Timestamp(timspamp);
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}
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/**
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* 获取今日 00:00:00
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*/
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public static Calendar getToday() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(new Date());
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String today = CalendarUtil.toDateTimeStr(calendar, ConstantFactory.STR_DATE);
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return CalendarUtil.fromStr(today, ConstantFactory.STR_DATE);
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}
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/**
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* 获取本月第一天零时 xxxx-xx-01 00:00:00
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*/
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public static Calendar getCurrentMonthFirstDay() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(new Date());
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String toMonth = CalendarUtil.toDateTimeStr(calendar, "yyyy-MM")+"-01";
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return CalendarUtil.fromStr(toMonth, ConstantFactory.STR_DATE);
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}
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/**
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* 从指定Calendar获取时间戳
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*/
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public static Timestamp getTimestamp(Calendar date) {
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Long timspamp = Long.parseLong("1000");
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if(null!=date) {
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timspamp = date.getTimeInMillis();
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}
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return new Timestamp(timspamp);
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}
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public static boolean isValid(Calendar calendar) {
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if(null==calendar|| calendar.compareTo(CalendarUtil.get1970())<0) {
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return false;
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}
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return true;
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}
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public static boolean isValid(Timestamp timestamp) {
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if(null==timestamp || timestamp.compareTo(CalendarUtil.get1970Timestamp())<0) {
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return false;
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}
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return true;
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}
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public static boolean isValid(String dateStr, String format) {
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Calendar calendar = CalendarUtil.fromStr(dateStr, format);
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if(null==calendar || calendar.compareTo(CalendarUtil.get1970())<0) {
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return false;
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}
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return true;
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}
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public static Integer getTimestampSeconds(Calendar time) {
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long mils = time.getTimeInMillis();
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String timestamp = String.valueOf(mils / ONE_SECONDS);
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return Integer.valueOf(timestamp);
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}
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}
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