import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Random;/*** description: 时间格式* author:  kevin* date: 2017/6/13 19:46*/
public class DateUtils {/** 日志对象 *//** 年-月-日 时:分:秒 显示格式 */// 备注:如果使用大写HH标识使用24小时显示格式,如果使用小写hh就表示使用12小时制格式。public static String DATE_TO_STRING_DETAIAL_PATTERN = "yyyy-MM-dd HH:mm:ss";/** 年-月-日 显示格式 */public static String DATE_TO_STRING_SHORT_PATTERN = "yyyy-MM-dd";private static SimpleDateFormat simpleDateFormat;/*** Date类型转为指定格式的String类型** @param source* @param pattern* @return*/public static String DateToString(Date source, String pattern) {simpleDateFormat = new SimpleDateFormat(pattern);return simpleDateFormat.format(source);}/*** 获取现在时间** @return 返回时间类型 yyyy-MM-dd HH:mm:ss*/public static Date getNowDate() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);ParsePosition pos = new ParsePosition(8);Date currentTime_2 = formatter.parse(dateString, pos);return currentTime_2;}/*** 获取现在时间** @return返回短时间格式 yyyy-MM-dd*/public static Date getNowDateShort() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");String dateString = formatter.format(currentTime);ParsePosition pos = new ParsePosition(8);Date currentTime_2 = formatter.parse(dateString, pos);return currentTime_2;}/*** 获取现在时间** @return返回字符串格式 yyyy-MM-dd HH:mm:ss*/public static String getStringDate() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);return dateString;}/*** 获取现在时间** @return 返回短时间字符串格式yyyy-MM-dd*/public static String getStringDateShort() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");String dateString = formatter.format(currentTime);return dateString;}/*** 获取时间 小时:分;秒 HH:mm:ss** @return*/public static String getTimeShort() {SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");Date currentTime = new Date();String dateString = formatter.format(currentTime);return dateString;}/*** 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;}/**  * 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss  *   * @param dateDate  * @return  */public static String dateToStrLong(java.util.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 yyyy-MM-dd** @param dateDate* @param k* @return*/public static String dateToStr(java.util.Date dateDate) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");String dateString = formatter.format(dateDate);return dateString;}/*** 将短时间格式字符串转换为时间 yyyy-MM-dd** @param strDate* @return*/public static Date strToDate(String strDate) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");ParsePosition pos = new ParsePosition(0);Date strtodate = formatter.parse(strDate, pos);return strtodate;}/*** 得到现在时间** @return*/public static Date getNow() {Date currentTime = new Date();return currentTime;}/*** 提取一个月中的最后一天** @param day* @return*/public static Date getLastDate(long day) {Date date = new Date();long date_3_hm = date.getTime() - 3600000 * 34 * day;Date date_3_hm_date = new Date(date_3_hm);return date_3_hm_date;}/*** 得到现在时间** @return 字符串 yyyyMMdd HHmmss*/public static String getStringToday() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd HHmmss");String dateString = formatter.format(currentTime);return dateString;}/*** 得到现在小时*/public static String getHour() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);String hour;hour = dateString.substring(11, 13);return hour;}/*** 得到现在分钟** @return*/public static String getTime() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);String min;min = dateString.substring(14, 16);return min;}/*** 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写。** @param sformat*            yyyyMMddhhmmss* @return*/public static String getUserDate(String sformat) {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat(sformat);String dateString = formatter.format(currentTime);return dateString;}/*** 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式，返回字符型的分钟*/public static String getTwoHour(String st1, String st2) {String[] kk = null;String[] jj = null;kk = st1.split(":");jj = st2.split(":");if (Integer.parseInt(kk[0]) < Integer.parseInt(jj[0]))return "0";else {double y = Double.parseDouble(kk[0]) + Double.parseDouble(kk[1]) / 60;double u = Double.parseDouble(jj[0]) + Double.parseDouble(jj[1]) / 60;if ((y - u) > 0)return y - u + "";elsereturn "0";}}/*** 得到二个日期间的间隔天数*/public static String getTwoDay(String sj1, String sj2) {SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");long day = 0;try {java.util.Date date = myFormatter.parse(sj1);java.util.Date mydate = myFormatter.parse(sj2);day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);} catch (Exception e) {return "";}return day + "";}/*** 时间前推或后推分钟,其中JJ表示分钟.*/public static String getPreTime(String sj1, String jj) {SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String mydate1 = "";try {Date date1 = format.parse(sj1);long Time = (date1.getTime() / 1000) + Integer.parseInt(jj) * 60;date1.setTime(Time * 1000);mydate1 = format.format(date1);} catch (Exception e) {}return mydate1;}/*** 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数*/public static String getNextDay(String nowdate, String delay) {try{SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");String mdate = "";Date d = strToDate(nowdate);long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;d.setTime(myTime * 1000);mdate = format.format(d);return mdate;}catch(Exception e){return "";}}/*** 判断是否润年** @param ddate* @return*/public static boolean isLeapYear(String ddate) {/*** 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年* 3.能被4整除同时能被100整除则不是闰年*/Date d = strToDate(ddate);GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();gc.setTime(d);int year = gc.get(Calendar.YEAR);if ((year % 400) == 0)return true;else if ((year % 4) == 0) {if ((year % 100) == 0)return false;elsereturn true;} elsereturn false;}/*** 返回美国时间格式 26 Apr 2006** @param str* @return*/public static String getEDate(String str) {SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");ParsePosition pos = new ParsePosition(0);Date strtodate = formatter.parse(str, pos);String j = strtodate.toString();String[] k = j.split(" ");return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);}/*** 获取一个月的最后一天** @param dat* @return*/public static String getEndDateOfMonth(String dat) {// yyyy-MM-ddString str = dat.substring(0, 8);String month = dat.substring(5, 7);int mon = Integer.parseInt(month);if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12) {str += "31";} else if (mon == 4 || mon == 6 || mon == 9 || mon == 11) {str += "30";} else {if (isLeapYear(dat)) {str += "29";} else {str += "28";}}return str;}/*** 产生周序列,即得到当前时间所在的年度是第几周** @return*/public static String getSeqWeek() {Calendar c = Calendar.getInstance(Locale.CHINA);String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));if (week.length() == 1)week = "0" + week;String year = Integer.toString(c.get(Calendar.YEAR));return year + week;}/*** 两个时间之间的天数** @param date1* @param date2* @return*/public static long getDays(String date1, String date2) {if (date1 == null || date1.equals(""))return 0;if (date2 == null || date2.equals(""))return 0;// 转换为标准时间SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");java.util.Date date = null;java.util.Date mydate = null;try {date = myFormatter.parse(date1);mydate = myFormatter.parse(date2);} catch (Exception e) {}long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);return day;}/*** 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数** @param k*            表示是取几位随机数，可以自己定*/public static String getNo(int k) {return getUserDate("yyyyMMddhhmmss") + getRandom(k);}/*** 返回一个随机数** @param i* @return*/public static String getRandom(int i) {Random jjj = new Random();// int suiJiShu = jjj.nextInt(9);if (i == 0)return "";String jj = "";for (int k = 0; k < i; k++) {jj = jj + jjj.nextInt(9);}return jj;}}