package com.basic.security.utils;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Locale;
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public class DateUtil {
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static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
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private static SimpleDateFormat yyyy_MM_dd = new SimpleDateFormat("yyyy-MM-dd");
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private static SimpleDateFormat yyyy年MM月dd日 = new SimpleDateFormat("yyyy年MM月dd日");
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public static String format() {
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return yyyy_MM_dd.format(new Date());
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}
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public static String format(Date date) {
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return yyyy_MM_dd.format(date);
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}
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public static String yyyy年MM月dd日(Date date) {
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return yyyy年MM月dd日.format(date);
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}
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public static String yyyy年MM月dd日() {
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return yyyy年MM月dd日.format(new Date());
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}
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public static String yyyy_MM_dd_to_yyyy年MM月dd日(String date) {
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try {
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return yyyy年MM月dd日.format(yyyy_MM_dd.parse(date));
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} catch (Exception e) {
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return "";
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}
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}
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public static String getPreviousMonthLastDay() {
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Calendar aCalendar = Calendar.getInstance();
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// add -1 month to current month
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aCalendar.add(Calendar.MONTH, -1);
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// set DATE to 1, so first date of previous month
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aCalendar.set(Calendar.DATE, 1);
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Date firstDateOfPreviousMonth = aCalendar.getTime();
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// set actual maximum date of previous month
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aCalendar.set(Calendar.DATE, aCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
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//read it
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Date lastDateOfPreviousMonth = aCalendar.getTime();
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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try {
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return sdf.format(lastDateOfPreviousMonth) + " 23:59:59";
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} catch (Exception e) {
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e.printStackTrace();
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return "";
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}
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}
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public static String getYesterday() {
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Calendar aCalendar = Calendar.getInstance();
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aCalendar.add(Calendar.DATE, -1);
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Date lastDateOfPreviousMonth = aCalendar.getTime();
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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try {
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return sdf.format(lastDateOfPreviousMonth) + " 23:59:59";
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} catch (Exception e) {
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e.printStackTrace();
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return "";
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}
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}
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public static String getNowTime() {
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Date date = new Date(System.currentTimeMillis());
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SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.getDefault());
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String s = "abc";
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if (s instanceof String) {
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}
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return format.format(date);
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}
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public static String getNowTime2() {
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Date date = new Date(System.currentTimeMillis());
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SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm", Locale.getDefault());
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return format.format(date);
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}
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public static String formatTime(long time, String format) {
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Date date = new Date(time);
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format, Locale.getDefault());
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return simpleDateFormat.format(date);
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}
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public static long getDefaultTimeStamp(String time) {
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return getTimeStamp(time, "yyyy/MM/dd HH:mm");
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}
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public static long getTimeStamp(String time, String format) {
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SimpleDateFormat dateFormat = new SimpleDateFormat(format);
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Date date = new Date();
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try {
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date = dateFormat.parse(time);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date.getTime();
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}
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//获得当天0点的时间戳
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public static long getTimesMorning() {
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Calendar cal = Calendar.getInstance();
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cal.set(Calendar.HOUR_OF_DAY, 0);
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cal.set(Calendar.SECOND, 0);
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cal.set(Calendar.MINUTE, 0);
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cal.set(Calendar.MILLISECOND, 0);
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return cal.getTimeInMillis();
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}
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//获得当天24点的时间戳
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public static long getTimesNight() {
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Calendar cal = Calendar.getInstance();
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cal.set(Calendar.HOUR_OF_DAY, 23);
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cal.set(Calendar.SECOND, 59);
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cal.set(Calendar.MINUTE, 59);
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cal.set(Calendar.MILLISECOND, 999);
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return cal.getTimeInMillis();
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}
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//获得本周一0点时间
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public static int getTimesWeekmorning() {
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Calendar cal = Calendar.getInstance();
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cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
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cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
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return (int) (cal.getTimeInMillis() / 1000);
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}
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//获得本周日24点时间
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public static int getTimesWeeknight() {
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Calendar cal = Calendar.getInstance();
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cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
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cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
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return (int) ((cal.getTime().getTime() + (7 * 24 * 60 * 60 * 1000)) / 1000);
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}
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//获得本月第一天0点时间
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public static int getTimesMonthmorning() {
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Calendar cal = Calendar.getInstance();
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cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
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cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.DAY_OF_MONTH));
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return (int) (cal.getTimeInMillis() / 1000);
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}
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// 获取当前时间是星期几
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//获得本月最后一天24点时间
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public static int getTimesMonthnight() {
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Calendar cal = Calendar.getInstance();
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cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
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cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
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cal.set(Calendar.HOUR_OF_DAY, 24);
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return (int) (cal.getTimeInMillis() / 1000);
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}
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/**
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* 判断当前日期是星期几
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*
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* @param pTime 要判断的时间
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* @return dayForWeek 判断结果
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* @Exception 发生异常
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*/
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public static String dayForWeek(long pTime) throws Exception {
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Date date = new Date();
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SimpleDateFormat dateFm = new SimpleDateFormat("EEEE");
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return dateFm.format(date);
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}
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public static String getDateTimeStrFull() {
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return sdf.format(new Date());
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}
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}
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