Java operation time tool

package com.jhkj.application.common.utils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtils {
    
    public static final String DATE_FORMAT_STR = "yyyy-MM-dd HH:mm:ss";
    public static final String DATE_FORMAT_PAR = "yyyy-MM-dd";
    
    public static final SimpleDateFormat formatLongDate = new SimpleDateFormat(
            "yyyy-MM-dd HH:mm:ss");
    public static final SimpleDateFormat format = new SimpleDateFormat(
            "yyyy-MM-dd");
    
    public static final SimpleDateFormat formatDate = new SimpleDateFormat(
            "yyyyMMddHHmmss");
    
    public static final SimpleDateFormat formatDate1 = new SimpleDateFormat(
            "yyyyMMdd");
    
    /**
     * 将短时间格式字符串yyyyMMddHHmmss转换为时间
     *
     * @param strDate
     * @return
     */
    public static Date strToDate(String strDate) {
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatDate.parse(strDate, pos);
        return strtodate;
    }
    
    /**
     * 将短时间格式字符串yyyy-MM-dd转换为时间
     *
     * @param strDate
     * @return
     */
    public static Date strToDate2(String strDate) {
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = format.parse(strDate, pos);
        return strtodate;
    }

    /**
     *
     * @param date
     * @return
     * @throws ParseException
     */
    public static Date parseStr2Date(String date) throws ParseException {
        synchronized (formatLongDate) {
            return formatLongDate.parse(date);
        }
    }
    
    /**
     * 将指定时间格式字符串转换为时间
     *
     * @param strDate
     * @return
     */
    public static Date strToDate(String strDate, String pattern) {
        ParsePosition pos = new ParsePosition(0);
        SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
        Date strtodate = dateFormat.parse(strDate, pos);
        return strtodate;
    }
    
    /**
     * 显示年月日 格式yyyyMMddHHmmss
     */
    public static String getDateFromString(Date date) {
        return formatDate.format(date);
    }


    // 得到一个时间延后或前移几天的时间
    public static String getCountedDay(String strDate, Integer delay) {
        try {
            String mdate = "";
            Date d = strToDate2(strDate);
            long myTime = (d.getTime() / 1000) + delay * 24 * 60 * 60;
            d.setTime(myTime * 1000);
            mdate = format.format(d);
            return mdate;
        } catch (Exception e) {
            return "";
        }
    }
    
    /**
     * 判断两个日期之间差了多少天，不足一天，则按一天计算，即20.01天也算21天
     */
    public static int dateDiff(Date date1, Date date2) {
        if (date1 == null || date2 == null)
            return 0;
        long baseNum = 3600 * 1000 * 24;
        long absNum = Math.abs(date1.getTime() - date2.getTime());
        long mod = absNum % baseNum;
        int num = (int) (absNum / baseNum);
        if (mod > 0)
            num++;
        return num;
    }
    
    /**
     * 判断两个日期之间差了多少天，不足一天，则按一天计算，即20.01天也算21天
     */
    public static int dateDiff1(Date date1, Date date2) {
        if (date1 == null || date2 == null)
            return 0;
        long baseNum = 3600 * 1000 * 24;
        long absNum = date1.getTime() - date2.getTime();
        long mod = absNum % baseNum;
        int num = (int) (absNum / baseNum);
        if (mod > 0)
            num++;
        return num;
    }

    /**
     * 得到一个日期接下来一年的天数
     */
    public static int getYearDay(Date date) {
        if (date == null)
            return 0;
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.YEAR,1);
//        calendar.add(Calendar.DATE,-1);
        Date endDate = calendar.getTime();
        long baseNum = 3600 * 1000 * 24;
        long absNum = endDate.getTime() - date.getTime();
        long mod = absNum % baseNum;
        int num = (int) (absNum / baseNum);
        if (mod > 0)
            num++;
        return num;
    }


    /**
     * 得到一个时间延后或前移几月的时间
     *
     * @param strDate
     * @param delay
     * @return
     */
    public static String getCountedMonth(String strDate, Integer delay) {
        try {
            Date dd = strToDate(strDate);
            Calendar currentDate = Calendar.getInstance();
            currentDate.setTime(dd);
            currentDate.add(Calendar.MONDAY, delay);
            return formatDate.format(currentDate.getTime());
        } catch (Exception e) {
            return "";
        }
    }
    
    
    /**
     * 得到一个时间延后或前移几月的时间
     *
     * @param strDate
     * @param delay
     * @return
     */
    public static String getCountedMonthAll(String strDate, Integer delay) {
        try {
            Date dd = strToDate(strDate);
            Calendar currentDate = Calendar.getInstance();
            currentDate.setTime(dd);
            currentDate.add(Calendar.MONDAY, delay);
            return formatDate.format(currentDate.getTime());
        } catch (Exception e) {
            return "";
        }
    }
    
    
    /**
     * 日期转毫秒
     *
     * @param expireDate
     * @return
     */
    public static Long getSecondsFromDate(String expireDate) {
        if (expireDate == null || expireDate.trim().equals(""))
            return 0l;
        Date date = null;
        try {
            date = formatDate.parse(expireDate);
            return date.getTime();
        } catch (ParseException e) {
            e.printStackTrace();
            return 0l;
        }
    }
    
    
    public static String formatDateStr(Date date) {
        return formatDate.format(date);
    }
    
    public static String formatDateStr1(Date date) {
        return formatDate1.format(date);
    }
    
    public static String formatDateStr2(Date date) {
        return format.format(date);
    }
    
    public static String formatDateStr3(Date date) {
        return formatLongDate.format(date);
    }
    
    
    public static Date parseStr2Date1(String date) throws ParseException {
        return formatDate.parse(date);
    }
    
    
    /**
     * 根据身份编号获取生日Date
     *
     * @param idCard 身份编号
     * @return 生日(yyyyMMdd)
     */
    public static Date getBirthByIdCard(String idCard) {
        Date date = null;
        try {
            DateFormat format = new SimpleDateFormat("yyyyMMdd");
            date = format.parse(idCard.substring(6, 14));
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }
    
    /**
     * 获取当前时间字符串
     */
    public static String getDateStr(Date date, String timePattern) {
        String dateStr = null;
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(timePattern);
            dateStr = sdf.format(date);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return dateStr;
    }
    
    /**
     * 获取当前时间下一个整点时间
     */
    public static Date getNextNSecond(Date date, Integer n) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.SECOND, n);
        return calendar.getTime();
    }
    
    /**
     * 获取当前时间下一个整点时间
     */
    public static Date getNextHour(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.HOUR, 1);
        return calendar.getTime();
    }
    
    
    /**
     * 获取当前时间后N天
     */
    public static Date getNextNDay(Date date, Integer n) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DATE, n);
        return calendar.getTime();
    }
    
    /**
     * 获取当前时间后N年
     */
    public static Date getNextNYear(Date date, Integer n) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.YEAR, n);
        return calendar.getTime();
    }
    
    
    /**
     * 获取当前时间小时数（24小时制）
     */
    public static Integer getDateHour(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.HOUR_OF_DAY);
    }
    
    /**
     * 根据生日计算年龄
     *
     * @param birthday
     * @return
     */
    public static int getAgeByBirth(Date birthday) {
        int age = 0;
        try {
            Calendar cal = Calendar.getInstance();
            
            if (cal.before(birthday)) {
                return 0;
            }
            int yearNow = cal.get(Calendar.YEAR);
            int monthNow = cal.get(Calendar.MONTH);
            int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
            cal.setTime(birthday);
            
            int yearBirth = cal.get(Calendar.YEAR);
            int monthBirth = cal.get(Calendar.MONTH);
            int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
            
            age = yearNow - yearBirth;
            
            if (monthNow <= monthBirth) {
                if (monthNow == monthBirth) {
                    if (dayOfMonthNow < dayOfMonthBirth) age--;
                } else {
                    age--;
                }
            }
            return age;
            
        } catch (Exception e) {//兼容性更强,异常后返回数据
            return 0;
        }
    }
    
    /**
     * 根据身份编号获取年龄
     *
     * @param idCard 身份编号
     * @return 生日(yyyyMMdd)
     */
    public static int getAgeByIdCard(String idCard) {
        Date date = null;
        try {
            DateFormat format = new SimpleDateFormat("yyyyMMdd");
            date = format.parse(idCard.substring(6, 14));
            return getAgeByBirth(date);
        } catch (ParseException e) {
            e.printStackTrace();
            return -1;
        }
    }
    
    /**
     * * 将时间戳转换为时间
     *
     * @param stamp
     * @param rex
     * @return
     */
    public static String stampToDate(String stamp, String rex) {
        String res;
//		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(rex);
        long lt = new Long(stamp);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }
    
}