package com.yssh.utils;
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import java.lang.management.ManagementFactory;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import org.apache.commons.lang3.time.DateFormatUtils;
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/**
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* 时间工具类
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*
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* @author tam
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*/
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public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
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public static String YYYY = "yyyy";
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public static String YYYY_MM = "yyyy-MM";
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public static String YYYY_MM_DD = "yyyy-MM-dd";
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public static String YYYYMMDDHH = "yyyyMMddHH";
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public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";
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public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
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public static String YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";
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public static String YYYY_MM_DD_HH = "yyyy-MM-dd HH";
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private static String[] parsePatterns = { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
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"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM", "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss",
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"yyyy.MM.dd HH:mm", "yyyy.MM" };
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/**
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* 获取当前Date型日期
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*
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* @return Date() 当前日期
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*/
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public static Date getNowDate() {
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return new Date();
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}
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/**
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* 获取当前日期, 默认格式为yyyy-MM-dd
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*
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* @return String
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*/
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public static String getDate() {
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return dateTimeNow(YYYY_MM_DD);
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}
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public static final String getTime() {
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return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
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}
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public static final String dateTimeNow() {
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return dateTimeNow(YYYYMMDDHHMMSS);
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}
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public static final String dateTimeNow(final String format) {
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return parseDateToStr(format, new Date());
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}
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public static final String dateTime(final Date date) {
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return parseDateToStr(YYYY_MM_DD, date);
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}
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public static final String parseDateToStr(final String format, final Date date) {
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return new SimpleDateFormat(format).format(date);
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}
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public static final Date dateTime(final String format, final String ts) {
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try {
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return new SimpleDateFormat(format).parse(ts);
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} catch (ParseException e) {
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throw new RuntimeException(e);
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}
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}
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public static String getYyyyMmDdHh(Date date) {
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return new SimpleDateFormat(YYYYMMDDHH).format(date);
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}
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public static String getYyyyMmDdHhMmSs(Date date) {
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return new SimpleDateFormat(YYYY_MM_DD_HH_MM_SS).format(date);
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}
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/**
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* 日期路径 即年/月/日 如2018/08/08
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*/
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public static final String datePath() {
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Date now = new Date();
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return DateFormatUtils.format(now, "yyyy/MM/dd");
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}
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/**
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* 日期路径 即年/月/日 如20180808
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*/
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public static final String dateTime() {
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Date now = new Date();
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return DateFormatUtils.format(now, "yyyyMMdd");
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}
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/**
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* 日期型字符串转化为日期 格式
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*/
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public static Date parseDate(Object str) {
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if (str == null) {
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return null;
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}
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try {
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return parseDate(str.toString(), parsePatterns);
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} catch (ParseException e) {
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return null;
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}
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}
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/**
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* 获取服务器启动时间
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*/
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public static Date getServerStartDate() {
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long time = ManagementFactory.getRuntimeMXBean().getStartTime();
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return new Date(time);
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}
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/**
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* 计算两个时间差
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*/
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public static String getDatePoor(Date endDate, Date nowDate) {
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long nd = 1000 * 24 * 60 * 60;
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long nh = 1000 * 60 * 60;
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long nm = 1000 * 60;
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// long ns = 1000;
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// 获得两个时间的毫秒时间差异
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long diff = endDate.getTime() - nowDate.getTime();
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// 计算差多少天
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long day = diff / nd;
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// 计算差多少小时
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long hour = diff % nd / nh;
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// 计算差多少分钟
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long min = diff % nd % nh / nm;
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// 计算差多少秒//输出结果
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// long sec = diff % nd % nh % nm / ns;
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return day + "天" + hour + "小时" + min + "分钟";
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}
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/**
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* @Title: differHour
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* @Description: 获取两个时间差几个小时
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* @param: @param endDate
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* @param: @param nowDate
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* @param: @return
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* @return: long
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* @throws
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*/
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public static int differDay(Date startDate, Date endDate){
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long nd = 1000 * 24 * 60 * 60;
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long diff = endDate.getTime() - startDate.getTime();
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double dd = Double.valueOf(String.valueOf(diff)) / nd;
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// 计算差多少天
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return Double.valueOf(Math.ceil(dd)).intValue();
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}
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/**
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* @Description: 获取一段时间间隔
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* @param:date 需要操作的时间对象
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* @param:day 操作的时间间隔
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* 正数为之后一段时间
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* 负数为之前一段时间
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* @param:dateType 操作的时间时分秒天选择
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* 常用有：
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* Calendar.MINUTE 分
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* Calendar.HOUR_OF_DAY 时
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* Calendar.DATE 天
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* Calendar.MONTH 月
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*/
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public static Date getAPeriodOfTime(Date date, int day,int dateType) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.add(dateType, day);
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return calendar.getTime();
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}
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public static List<String> get3Hours() {
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List<String> times = new ArrayList<>();
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SimpleDateFormat ymdh = new SimpleDateFormat(YYYYMMDDHH);
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Calendar calendar = Calendar.getInstance();
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calendar.add(Calendar.HOUR_OF_DAY, 1);
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for (int i = 0; i < 3; i++) {
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calendar.add(Calendar.HOUR_OF_DAY, -1);
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String time = ymdh.format(calendar.getTime());
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// times.add(time);
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times.add(0, time);
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}
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return times;
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}
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/**
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*/
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public static Map<Date, Date> segmentationDateByTimeQuantum(Date startDate, Date endDate, int timeQuantum,int dateType){
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LinkedHashMap<Date, Date> result = new LinkedHashMap<Date, Date>();
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long startTimeMillisecond= startDate.getTime();
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long endTimeMillisecond = endDate.getTime();
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Long quantumTimeMillisecond = 0L;
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switch (dateType) {
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case Calendar.DATE:
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quantumTimeMillisecond = new Integer(1000 * 60 * 60 * 24 * timeQuantum).longValue();
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break;
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case Calendar.HOUR_OF_DAY:
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quantumTimeMillisecond = new Integer(1000 * 60 * 60 * timeQuantum).longValue();
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break;
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case Calendar.MINUTE:
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quantumTimeMillisecond = new Integer(1000 * 60 * timeQuantum).longValue();
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break;
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default:
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break;
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}
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for (long time = startTimeMillisecond; time < endTimeMillisecond; time += quantumTimeMillisecond) {
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Date beginDate = new Date(time);
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Date finishDate = new Date(time + quantumTimeMillisecond);
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if (finishDate.getTime() > endTimeMillisecond) {
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finishDate = endDate;
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}
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result.put(beginDate, finishDate);
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}
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return result;
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}
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/**
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* 获取本月第一天
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* @return String
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**/
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public static Date getMonthStart() {
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Calendar cal = Calendar.getInstance();
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//cal.set(Calendar.MONTH, 3);
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cal.set(Calendar.DAY_OF_MONTH, 1);
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return dateTime(YYYY_MM_DD_HH_MM_SS, parseDateToStr(YYYY_MM_DD, cal.getTime()) + " 00:00:00");
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}
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/**
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* 获取本月最后一天
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* @return String
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**/
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public static Date getMonthEnd() {
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Calendar cal = Calendar.getInstance();
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//cal.set(Calendar.MONTH, 3);
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cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
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return dateTime(YYYY_MM_DD_HH_MM_SS, parseDateToStr(YYYY_MM_DD, cal.getTime()) + " 23:59:59");
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}
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public static void main(String[] args) {
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//System.out.println(parseDateToStr(YYYY_MM_DD_HH_MM_SS, getMonthStart()));
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//System.err.println(parseDateToStr(YYYY_MM_DD_HH_MM_SS, getMonthEnd()));
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System.out.println(parseDateToStr(YYYY_MM_DD_HH_MM_SS, getAPeriodOfTime(getNowDate(), -7, Calendar.DATE)));
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}
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}
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