[游戏开发]日期处理工具类

package com.hzks.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.*;

import org.apache.commons.collections4.map.HashedMap;
import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 * 
 * @author hzks
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    
    private static String[] parsePatterns = {
            "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", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     * 
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     * 
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String getMillis(final Date date)
    {
        return parseDateToStr(YYYYMMDDHHMMSS, date);
    }

    public static final String parseDateToStr(final String format, final Date date)
    {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str)
    {
        if (str == null)
        {
            return null;
        }
        try
        {
            return parseDate(str.toString(), parsePatterns);
        }
        catch (ParseException e)
        {
            return null;
        }
    }
    
    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate()
    {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate)
    {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 两个日期相差天数
     * @param dateStart 开始日期
     * @param dateEnd 结束日期
     * @return 相差天数
     */
    public static int getDiscrepantDays(Date dateStart, Date dateEnd) {
        return (int) ((dateEnd.getTime() - dateStart.getTime()) / 1000 / 60 / 60 / 24);
    }

    /**
     * 日期往后推固定天数
     * @param date 日期
     * @param day 天数
     * @return 结果
     */
    public static Date addDays(Date date, int day) {
        Calendar calendar = new GregorianCalendar();
        calendar.setTime(date);
        //把日期往后增加day天.整数往后推,负数往前移动
        calendar.add(Calendar.DATE,day);
        //这个时间就是日期往后推一天的结果
        return calendar.getTime();
    }

    /**
     * 取得当月天数
     * */
    public static int getCurrentMonthLastDay()
    {
        Calendar a = Calendar.getInstance();
        //把日期设置为当月第一天
        a.set(Calendar.DATE, 1);
        //日期回滚一天，也就是最后一天
        a.roll(Calendar.DATE, -1);
        int maxDate = a.get(Calendar.DATE);
        return maxDate;
    }

    /**
     * 比较时间大小
     * @param beginTime
     * @param endTime
     */
    public static boolean compareDate(String beginTime, String endTime) {
        try {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            Date sd1=df.parse(beginTime);
            Date sd2=df.parse(endTime);
            return sd1.before(sd2);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }
    /**
     * 一月之前
     *
     * @param date
     * @return
     */
    public static Date getYesterMonthday(Date date) {
        Calendar yesterday = Calendar.getInstance();
        yesterday.setTime(date);
        yesterday.add(Calendar.MONTH, -1);
        return yesterday.getTime();
    }
    // 一月之后
    public static Date getNextDate(Date date) {
        Calendar today = Calendar.getInstance();
        today.setTime(date);
        today.add(Calendar.DATE, 1);
        return today.getTime();
    }

    /**
     * 获取上个月月份
     */
    public static String getLastMonth() {
        LocalDate today = LocalDate.now();
        today = today.minusMonths(1);
        DateTimeFormatter formatters = DateTimeFormatter.ofPattern("yyyy-MM");
        return formatters.format(today);
    }

    /**
     * 判断过期日期 是否 过期
     * @param endTime  过期日期
     * @param currentTime 当前日期
     */
    public static boolean compareDate(Date endTime, Date currentTime) {
//        DateUtils.dateTime(DateUtils.YYYY_MM_DD_HH_MM_SS,DateUtils.getTime())
        return endTime.compareTo(currentTime)<0;
    }

    /**
     * 获取某月的最后一天
     *
     */
    public static String getLastDayOfMonth(Date date)
    {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int year = cal.get(Calendar.YEAR);
        int month = cal.get(Calendar.MONTH) + 1;
        //设置年份
        cal.set(Calendar.YEAR,year);
        //设置月份
        cal.set(Calendar.MONTH, month-1);
        //获取某月最大天数
        int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
        //设置日历中月份的最大天数
        cal.set(Calendar.DAY_OF_MONTH, lastDay);
        //格式化日期
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String lastDayOfMonth = sdf.format(cal.getTime());

        return lastDayOfMonth;
    }
    public static String DateToString(Date dDate, int nFormat) {
        String resString = "";
        try {
            String sFormat = "";

            if(nFormat == 1) {
                sFormat = "yyyy-MM-dd";
            } else if(nFormat == 2) {
                sFormat = "yyyy-MM-dd HH:mm:ss";
            } else if(nFormat == 3) {
                sFormat = "yyyy-MM-dd EEE";
            } else if(nFormat == 4) {
                sFormat = "yyyy-MM-dd HH:mm";
            } else if(nFormat == 5) {
                sFormat = "yyyy-MM-dd HH:mm:ss.sss";
            } else if(nFormat == 6) {
                sFormat = "yyyy-MM-ddTHH:mm:ss";
            } else if(nFormat == 7) {
                sFormat = "yyyy-MM-dd'T'HH:mm:ssXXX";
            }else {
                sFormat = "yyyy-MM-dd";
            }

            SimpleDateFormat simDateFormat = new SimpleDateFormat(sFormat);
            resString = simDateFormat.format(dDate);
        } catch (Exception e) {
            return resString;
        }
        return resString;
    }


    /**
     * 获取之前一整月的的 开始和结束日期  如（ queryDate >= 当前日期 ？获取上个月的 ：获取当前的 ）
     * @param queryDate 要获取的月份日期 yyyy-MM
     * @return 开始和结束日期 如 ：（ 2021-8-1  到  2021-8-31）
     */
    public static Map<String,String> getBeforeStartEndDate(String queryDate){
        Map map=new HashMap();
        String startTime = "";
        String endTime = "";
        SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM");
        String dateTime =simpleDateFormat.format(new Date());
        try {
            SimpleDateFormat d=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date  thisTime= simpleDateFormat.parse(dateTime);
            Date  startDate= simpleDateFormat.parse(queryDate);
            if (startDate.before(thisTime) ){
                startTime=d.format(startDate);
                // 获取月份最后一天 的 日期
                endTime=getLastDayOfMonth(startDate);
            }else {
                // 获取当前日期的上个月日期
                startDate= simpleDateFormat.parse(getLastMonth());
                startTime= d.format(startDate);
                endTime= getLastDayOfMonth(startDate);
                System.out.println("当月工资未到发放时间,默认当前日期的上个月！");
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        map.put("startTime",startTime);
        map.put("endTime",endTime);
        return map;
    }

    /**
     * 一天中的天数
     */
    public static long millionSecondsOfDay = 86400000;
    /**
     * 得到两个日期之间的天数,两头不算,取出数据后，可以根据需要再加
     *
     * @param date1
     * @param date2
     * @return
     * @author hsshao
     */
    public static int getDay(Date date1, Date date2) {
        Long d2 = date2.getTime();
        Long d1 = date1.getTime();
        return (int) ((d2 - d1) / millionSecondsOfDay);
    }

    /**
     *@Author ht
     *@Date 2020/12/2 15:31
     * 当前时间前多少天
     */
    public static String getPastDate(int past) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) - past);
        Date today = calendar.getTime();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String result = format.format(today);
        return result;
    }

    /**
     * @Date 10:32
     * @author Administrator
     * @Description 获取当前月的第一天
     */
    public static Date getFirstDateOfCurrentDate() {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Calendar c = Calendar.getInstance();
        c.add(Calendar.MONTH, 0);
        c.set(Calendar.DAY_OF_MONTH, 1);//设置为1号,当前日期既为本月第一天
//        return format.format(c.getTime());
        return c.getTime();
    }

    /**
     * 一个月平均七天的日期,不满七天 的，按剩余的日期计算
     * 列如：2021-08-01  - 2021-08-07  2021-08-08  - 2021-08-15... 以此类推
     */
    public static List<Map<String,String>> getHebdomadList() throws ParseException {
        List<Map<String,String>> list=new ArrayList<>();
        String nyr= null;
        SimpleDateFormat d=new SimpleDateFormat("yyyy-MM-dd");
        Date ds=d.parse(d.format(new Date()));
        int dayCount=(getDay(getFirstDateOfCurrentDate(), ds)+1);
        int dayAverage=dayCount%7;
        if (dayAverage==0){
            dayAverage = dayCount/7;
        }else {
            dayAverage = (dayCount/7)+1;
        }
        for(int i=1;i<=dayAverage;i++){
            Map<String,String> map=new HashMap<>();
            if(i<dayAverage){
                int day_1=(dayCount - 7*i)+1;
                if (nyr == null){
                    nyr=new SimpleDateFormat("yyyy-MM-dd").format(getFirstDateOfCurrentDate());
                    System.out.println(nyr+" ~ "+getPastDate(day_1));
                    map.put("startTime",nyr);
                    map.put("endTime",getPastDate(day_1));
                    nyr = getPastDate(day_1);
                }else {
                    System.out.println(nyr+" ~ "+getPastDate(day_1));
                    map.put("startTime",nyr);
                    map.put("endTime",getPastDate(day_1));
                    nyr = getPastDate(day_1);
                }
            }else {
                System.out.println(getPastDate(0));
                map.put("startTime",nyr);
                map.put("endTime",getPastDate(0));
            }
            list.add(map);
        }
        return list;
    }
    public static String dateTo0String(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        return formatter.format(date).trim();
    }

    /**
     * 计算当前月有多少自然日、有多少工作日、有几周
     *   Map<String, Integer> map = getMonthInfo(Calendar.getInstance());
     *   System.err.println("------------" + map.get("year") + "年" + map.get("month") + "月-------------");
     *   System.err.println("总天数：" + map.get("daysAmount"));
     *   System.err.println("工作日天数：" + map.get("workDaysAmount"));
     *   System.err.println("周数：" + map.get("weeksAmount"));
     */
    private static Map getMonthInfo(Calendar calendar) {
        Map<Object, Integer> map = new HashedMap();
        int workDays = 0;
        int days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
        try {
            calendar.set(Calendar.DATE, 1);//从每月1号开始
            for (int i = 0; i < days; i++) {
                int day = calendar.get(Calendar.DAY_OF_WEEK);
                if (!(day == Calendar.SUNDAY || day == Calendar.SATURDAY)) {
                    workDays++;
                }
                calendar.add(Calendar.DATE, 1);
            }
            map.put("workDaysAmount", workDays);//工作日
            map.put("year", calendar.get(Calendar.YEAR));//实时年份
            map.put("month", calendar.get(Calendar.MONTH));//实时月份
            map.put("daysAmount", days);//自然日
            map.put("weeksAmount", calendar.getActualMaximum(Calendar.WEEK_OF_MONTH));//周
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;
    }

    public static void main(String[] args) throws ParseException {
        Map map=new HashMap();
        /*获取当前月的所有日期*/
        Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);
        // 获取当前月
        int month = calendar.get(Calendar.MONTH) + 1;
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        for(int i=1;i<=getCurrentMonthLastDay();i++) {
           String startTime = sdf.format(sdf.parse((year + "-" + month + "-" + i + " 00:00:00")));
            String  endTime = sdf.format(sdf.parse(year + "-" + month + "-" + i + " 23:59:59"));
            if (dateTo0String(new Date()).equals(new SimpleDateFormat("yyyy-MM-dd").format(new SimpleDateFormat("yyyy-MM-dd").parse((year + "-" + month + "-" + i))))) {
                System.out.println("111111");
                break;
            }else {
                System.out.println("2222222");
            }
        }


    }
}