[DateTime工具类] #datetime #工具类

DateTimeUtils.java

package com.huacai.utils;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.time.DateUtils;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * Created by Yu Qun on 2017/6/21.
 */
@Component
@Slf4j
public class DateTimeUtil {
    private static final Calendar CALENDAR = Calendar.getInstance(Locale.CHINA);

    /**
     * 从当前时间开始minutes分钟后（minutes是正值）/前（minutes是否负值）
     *
     * @param minutes
     * @return
     */
    public Date dateFromMinutes(int minutes) {
        Date currDate = CALENDAR.getTime();
        Date newDate = DateUtils.addMinutes(currDate, minutes);

        return newDate;
    }

    /**
     * 获取现在时间
     *
     * @return 返回短时间字符串格式yyyyMMdd
     */
    public static String getStringDateShort() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 将短时间格式时间转换为字符串 yyyy年MM月dd日
     *
     * @param dateDate
     * @return
     */
    public String dateToStr(Date dateDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日");
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    /**
     * date2比date1多的天数
     * @param date1
     * @param date2
     * @return
     */
    public static int differentDays(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date1);


        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(date2);
        int day1 = cal1.get(Calendar.DAY_OF_YEAR);
        int day2 = cal2.get(Calendar.DAY_OF_YEAR);

        int year1 = cal1.get(Calendar.YEAR);
        int year2 = cal2.get(Calendar.YEAR);
        //同一年
        if (year1 != year2)
        {
            int timeDistance = 0;
            for (int i = year1; i < year2; i++) {
                //闰年
                if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0) {
                    timeDistance += 366;
                } else    //不是闰年
                {
                    timeDistance += 365;
                }
            }

            return timeDistance + (day2 - day1);
        } else    //不同年
        {
            return day2 - day1;
        }
    }


    /**
     * 日期格式字符串转换成时间戳
     * @param date_str 字符串日期
     * @param format 如：yyyy-MM-dd HH:mm:ss
     * @return
     */
    public static Long date2TimeStamp(String date_str,String format){
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            return sdf.parse(date_str).getTime()/1000;
        } catch (Exception e) {
            log.error(e.toString());
        }
        return 0L;
    }


    /**
     * 将短时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss
     *
     * @param dateDate
     * @return
     */
    public static String dateToStrs(Date dateDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    /**
     * 将短时间格式时间转换为字符串
     *
     * @param dateDate
     * @return
     */
    public String dateFromDateToDate(Date dateDate,String pattern) {
        SimpleDateFormat formatter = new SimpleDateFormat(pattern);
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    public static String dateFromDateByPattern(Date dateDate,String pattern) {
        SimpleDateFormat formatter = new SimpleDateFormat(pattern);
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    /**
     * 字符串转时间
     *
     * @param dateStr
     *            时间格式的字符串
     * @param pattern
     *            字符串的时间格式
     * @return 格式化后的时间
     * @throws ParseException
     */
    public static Date strToDate(String dateStr, String pattern) {
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        Date parse = null;
        try {
            parse = sdf.parse(dateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return parse;
    }



    /**
     * 获取给定时间延后或前移几天的时间,delay为前移或后延的天数
     *
     * @return
     */
    public static Date getBeforAndAfterDate(Date date, int delay) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        //Date date=new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, delay);
        date = calendar.getTime();
        return date;
    }

    /**
     * 获取给定时间延后或前移几天的时间,delay为前移或后延的天数
     *
     * @return
     */
    public static Date getBeforAndAfterDate(Date date, int delay, String timeFormat) {
        SimpleDateFormat sdf = new SimpleDateFormat(timeFormat);
        //Date date=new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, delay);
        date = calendar.getTime();
        return date;
    }


    /**
     * 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
     *
     * @param strDate
     * @return
     */
    public static Date strToDateLong(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }

    public static Date strToDateLong(String strDate, String pattern) {
        SimpleDateFormat formatter = new SimpleDateFormat(pattern);
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }

    public Map<String, Object> commonDate(String startTime, String endTime) {
        Map<String, Object> map = new HashMap<>();
        DateFormat format1 = new SimpleDateFormat("yyyy-MM-dd");
        Date startDate = null;
        Date endDate = null;
        if (!StringUtils.isEmpty(startTime)) {
            try {
                startDate = format1.parse(startTime.toString());
                if (!StringUtils.isEmpty(endTime)) {
                    endDate = DateTimeUtil.getBeforAndAfterDate(format1.parse(endTime.toString()), 1);
                } else {
                    endDate = new Date();
                }
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        map.put("startDate", startDate);
        map.put("endDate", endDate);
        return map;

    }

    public static void main(String[] args){
     /* String str = "(降价提醒)尊敬的用户，有一条货源（秘鲁鱿鱼 500-1000）降价啦！打开华采找鱼搜索“秘鲁大片”查看详情#code#。（下载华采找鱼App，随时随地查看货源！）回T退订";
        String code = str.replace("#code#", "111");
        System.out.println(code);

        Integer integer = new Integer("010");
        System.out.println(integer);*/
        for(int a =0; a<5; a++){
            double random = Math.random();
            int b = (int)(random * 900000) +100000;
            System.out.println(b);
        }

    }

}