package com.dsh.guns.modular.system.util;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.lang3.time.DateFormatUtils;
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import org.apache.commons.lang3.time.DateUtils;
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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.GregorianCalendar;
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import java.util.TimeZone;
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/**
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* <h3>处理时间的工具类</h3>
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*/
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public class DateUtil {
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private static TimeZone tz = TimeZone.getTimeZone("GMT+8");
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// private static TimeZone tz = TimeZone.getTimeZone("Asia/Shanghai");
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public static String getTime(Date date) {
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return formatDate(date, "yyyy-MM-dd HH:mm:ss");
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}
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/**
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* 格式化日期
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*/
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public static Date parse(String date, String pattern) {
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try {
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return DateUtils.parseDate(date, pattern);
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} catch (ParseException e) {
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e.printStackTrace();
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return null;
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}
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}
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public static String formatDate(Date date, String pattern) {
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String formatDate = null;
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if (StringUtils.isNotBlank(pattern)) {
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formatDate = DateFormatUtils.format(date, pattern);
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} else {
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formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
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}
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return formatDate;
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}
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/**
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* 格式化日期
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*/
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public static Date parseDate(String date) {
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return parse(date, "yyyy-MM-dd");
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}
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public static Date parseDateOne(String date) {
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return parse(date, "yyyy-MM-dd HH:mm:ss");
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}
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/**
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* 格式化日期
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*/
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public static String format(Date date, String pattern) {
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return DateFormatUtils.format(date, pattern);
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}
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public static boolean hourMinuteBetween(String nowDate, String startDate, String endDate) throws Exception{
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SimpleDateFormat format = new SimpleDateFormat("HH:mm");
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Date now = format.parse(nowDate);
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Date start = format.parse(startDate);
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Date end = format.parse(endDate);
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long nowTime = now.getTime();
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long startTime = start.getTime();
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long endTime = end.getTime();
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return nowTime >= startTime && nowTime <= endTime;
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}
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/**
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* 得到系统日期
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*
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* @return
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*/
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public static Date getDate() {
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TimeZone.setDefault(tz);
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return new Date();
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}
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/**
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* 获取当然凌晨的时间
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*
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* @return Date
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*/
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public static Date getZero() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(new Date());
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calendar.set(Calendar.HOUR_OF_DAY, 0);
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calendar.set(Calendar.MINUTE, 0);
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calendar.set(Calendar.SECOND, 0);
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return calendar.getTime();
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}
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/**
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* 判断日期是否在from，to之内 "yyyy-MM-dd" 格式
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*
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* @param time
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* 指定日期
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* @param from
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* 开始日期
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* @param to
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* 结束日期
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* @return true 在之间 false 不在之间
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*/
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public static boolean belongCalendar(Date time, Date from, Date to) {
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Calendar date = Calendar.getInstance();
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date.setTime(time);
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Calendar after = Calendar.getInstance();
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after.setTime(from);
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Calendar before = Calendar.getInstance();
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before.setTime(to);
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if ((date.after(after) && date.before(before)) || (time.compareTo(from) == 0 || time.compareTo(to) == 0)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* 两个时间之差
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*
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* @param startTime
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* @param endTime
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* @param format
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* @return
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* @throws ParseException
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*/
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public static String dateDiff(String startTime, String endTime, String format) throws ParseException {
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// 按照传入的格式生成一个simpledateformate对象
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SimpleDateFormat sd = new SimpleDateFormat(format);
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long nd = 1000 * 24 * 60 * 60;// 一天的毫秒数
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long nh = 1000 * 60 * 60;// 一小时的毫秒数
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long nm = 1000 * 60;// 一分钟的毫秒数
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long ns = 1000;// 一秒钟的毫秒数
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long diff;
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long day = 0;
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long hour = 0;
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long min = 0;
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long sec = 0;
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// long time=0;
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String strTime = "";
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// 获得两个时间的毫秒时间差异
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diff = sd.parse(endTime).getTime() - sd.parse(startTime).getTime();
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day = diff / nd;// 计算差多少天
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hour = diff % nd / nh + day * 24;// 计算差多少小时
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min = diff % nd % nh / nm + day * 24 * 60;// 计算差多少分钟
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sec = diff % nd % nh % nm / ns;// 计算差多少秒
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// 输出结果
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/*
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* System.out.println("时间相差：" + day + "天" + (hour - day * 24) + "小时" +
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* (min - day * 24 * 60) + "分钟" + sec + "秒。");
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* System.out.println("hour=" + hour + ",min=" + min);
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*/
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if (day == 1) {
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strTime = "昨天";
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} else if (day > 1) {
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// strTime=day+"天前";
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strTime = startTime.substring(0, 10);
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} else if (hour >= 1 && hour < 24) {
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strTime = hour + "小时前";
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} else {
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if (min == 0) {
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strTime = sec + "秒钟前";
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} else {
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strTime = min + "分钟前";
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}
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}
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// if (str.equalsIgnoreCase("h")) {
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// return hour;
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// } else {
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// return min;
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// }
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// if (str.equalsIgnoreCase("h")) {
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// return hour;
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// } else {
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// return min;
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// }
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return strTime;
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}
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public static String getTime() {
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return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
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}
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/**
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* 得到系统Calendar日期
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*
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* @return
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*/
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public static Calendar getCalendar() {
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TimeZone.setDefault(tz);
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Calendar cal = Calendar.getInstance();
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return cal;
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}
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/**
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* 获取当前时间
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*
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* @return
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*/
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public static long getMillisecond() {
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long millisecond = 0;
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TimeZone.setDefault(tz);
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Calendar cal = Calendar.getInstance();
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millisecond = cal.getTimeInMillis();
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return millisecond;
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}
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/**
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* 获取本月1号的时间戳
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*
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* @return
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*/
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public static long getMillisecond_MONTH() {
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long millisecond = 0;
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TimeZone.setDefault(tz);
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Calendar cal = Calendar.getInstance();
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cal.set(Calendar.DAY_OF_MONTH, 1);
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millisecond = cal.getTimeInMillis();
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return millisecond;
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}
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/**
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* 获取上个月1号的时间戳
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*
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* @return
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*/
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public static long getMillisecond_FRONTMONTH() {
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long millisecond = 0;
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Calendar cal = getCalendar();
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cal.set(Calendar.DAY_OF_MONTH, 1);
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cal.set(Calendar.MONTH, Calendar.MONTH - 2);
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millisecond = cal.getTimeInMillis();
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return millisecond;
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}
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/**
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* 获取当前毫秒数
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*
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* @return long
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*/
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public static long getCurMilli() {
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long millisecond = 0;
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Calendar cal = Calendar.getInstance();
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millisecond = cal.getTimeInMillis();
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return millisecond;
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}
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/**
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* 日期转毫秒
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*
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* @param date
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* @return
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*/
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public static long getMillisecond(Date date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if (!"".equals(date)) {
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newDate = sdf.format(date);
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} else {
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newDate = sdf.format(DateUtil.getDate());
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}
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long millisecond = 0;
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try {
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millisecond = sdf.parse(newDate).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 日期转毫秒（加24小时,yyyy-MM-dd HH:mm:ss）
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_24h(Date date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if (!"".equals(date)) {
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newDate = sdf.format(date);
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} else {
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newDate = sdf.format(DateUtil.getDate());
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}
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long millisecond = 24 * 3600 * 1000;
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try {
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millisecond += sdf.parse(newDate).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 日期转毫秒（加N年）
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_year(String date, Integer year) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if ("".equals(date)) {
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newDate = sdf.format(DateUtil.getDate());
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} else {
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newDate = getDateTime(Long.parseLong(date));
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}
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Date dt = null;
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try {
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dt = sdf.parse(newDate);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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Calendar rightNow = Calendar.getInstance();
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rightNow.setTime(dt);
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rightNow.add(Calendar.YEAR, year);
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Date dt1 = rightNow.getTime();
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return dt1.getTime();
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}
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/**
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* 日期转毫秒（加N天）
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*
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* @param date
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* 毫秒字符串
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* @return
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*/
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public static Date getMillisecond_day(String date, Integer day) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if ("".equals(date)) {
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newDate = sdf.format(DateUtil.getDate());
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} else {
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newDate = date;
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}
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Date dt = null;
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try {
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dt = sdf.parse(newDate);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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Calendar rightNow = Calendar.getInstance();
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rightNow.setTime(dt);
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rightNow.add(Calendar.DATE, day);
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Date dt1 = rightNow.getTime();
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Date dates = new Date(dt1.getTime());
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return dates;
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}
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/**
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* 日期转毫秒（加N月）
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_month(String date, Integer day) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if ("".equals(date)) {
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newDate = sdf.format(DateUtil.getDate());
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} else {
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newDate = getDateTime(Long.parseLong(date));
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}
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Date dt = null;
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try {
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dt = sdf.parse(newDate);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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Calendar rightNow = Calendar.getInstance();
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rightNow.setTime(dt);
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rightNow.add(Calendar.MONTH, day);
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Date dt1 = rightNow.getTime();
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return dt1.getTime();
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}
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/**
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* 日期转毫秒（加分钟）
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_fz(String date, Integer day) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String newDate = "";
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if ("".equals(date)) {
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newDate = sdf.format(DateUtil.getDate());
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} else {
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newDate = getDateTime(Long.parseLong(date));
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}
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Date dt = null;
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try {
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dt = sdf.parse(newDate);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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Calendar rightNow = Calendar.getInstance();
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rightNow.setTime(dt);
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rightNow.add(Calendar.MINUTE, day);
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Date dt1 = rightNow.getTime();
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return dt1.getTime();
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}
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public static Date getMillisecond_fz1(String date, Integer day) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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Date dt = null;
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try {
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dt = sdf.parse(date);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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Calendar rightNow = Calendar.getInstance();
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rightNow.setTime(dt);
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rightNow.add(Calendar.MINUTE, day);
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Date dt1 = rightNow.getTime();
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return dt1;
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}
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/**
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* 字符串日期转毫秒
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_str(String date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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if ("".equals(date)) {
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date = sdf.format(DateUtil.getDate());
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}
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long millisecond = 0;
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try {
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millisecond = sdf.parse(date).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 字符串日期转毫秒
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_strYmd(String date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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if ("".equals(date)) {
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date = sdf.format(DateUtil.getDate());
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}
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long millisecond = 0;
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try {
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millisecond = sdf.parse(date).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 字符串日期转Date
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*
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* @param string
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* @return date
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* @throws ParseException
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*/
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public static Date getStrToDate(String dateString) throws ParseException {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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Date date = sdf.parse(dateString);
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return date;
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}
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/**
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* 字符串日期转Date
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*
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* @param date
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* @return
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*/
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public static Date getDate_str(String dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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sdf.setTimeZone(tz);
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if ("".equals(dateStr)) {
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dateStr = sdf.format(DateUtil.getDate());
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}
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Date date = null;
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try {
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date = sdf.parse(dateStr);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 字符串日期转Date yyyy-MM-dd HH:mm
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*
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* @param date
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* @return
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*/
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public static Date getDate_str2(String dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
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sdf.setTimeZone(tz);
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if ("".equals(dateStr)) {
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dateStr = sdf.format(DateUtil.getDate());
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}
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Date date = null;
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try {
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date = sdf.parse(dateStr);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 字符串日期转Date yyyy-MM-dd HH:mm:ss
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*
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* @param date
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* @return
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*/
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public static Date getDate_str3(String dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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sdf.setTimeZone(tz);
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if ("".equals(dateStr)) {
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dateStr = sdf.format(DateUtil.getDate());
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}
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Date date = null;
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try {
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date = sdf.parse(dateStr);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 字符串日期转Date
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*
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* @param date
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* @return
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*/
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public static Date getDate_strYMd(Long dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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if (dateStr == null) {
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dateStr = DateUtil.getCurMilli();
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}
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Date date = null;
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try {
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date = sdf.parse(sdf.format(new Date(dateStr)));
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 毫秒转Date
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*
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* @param date
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* @return
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*/
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public static Date getDate_strYMdHms(Long dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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if (dateStr == null) {
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dateStr = DateUtil.getCurMilli();
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}
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Date date = null;
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try {
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date = sdf.parse(sdf.format(new Date(dateStr)));
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 字符串日期转Date
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*
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* @param date
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* @return
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*/
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public static Date getDate_strYMdHm(Long dateStr) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
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if (dateStr == null) {
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dateStr = DateUtil.getCurMilli();
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}
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Date date = null;
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try {
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date = sdf.parse(sdf.format(new Date(dateStr)));
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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/**
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* 字符串日期转毫秒
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_strDmy(String date) {
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SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
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if ("".equals(date)) {
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date = sdf.format(DateUtil.getDate());
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}
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long millisecond = 0;
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try {
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millisecond = sdf.parse(date).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 字符串日期转毫秒转毫秒（加24小时）
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*
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* @param date
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* @return
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*/
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public static long getMillisecond_str_24h(String date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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if ("".equals(date)) {
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date = sdf.format(DateUtil.getDate());
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}
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long millisecond = 24 * 3600 * 1000;
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try {
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millisecond += sdf.parse(date).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 字符串日期转毫秒转毫秒（加24小时）
|
*
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* @param date
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* @return
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*/
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public static long getMillisecond_strYmd_24h(String date) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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if ("".equals(date)) {
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date = sdf.format(DateUtil.getDate());
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}
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long millisecond = 24 * 3600 * 1000;
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try {
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millisecond += sdf.parse(date).getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return millisecond;
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}
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/**
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* 毫秒转日期
|
*
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* @param millisecond
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* @return
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*/
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public static String getDate(long millisecond) {
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if (millisecond == 0) {
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millisecond = getCurMilli();
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}
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SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd");
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Calendar calendar = getCalendar();
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calendar.setTimeInMillis(millisecond);
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return dateformat.format(calendar.getTime());
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}
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/**
|
* 转换为指定格式的时间
|
*
|
* @return Date
|
*/
|
public static Date getDate(String date, String pattern) {
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SimpleDateFormat format = new SimpleDateFormat(pattern);
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Date d = null;
|
try {
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d = format.parse(date);
|
} catch (ParseException ex) {
|
return null;
|
}
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return d;
|
}
|
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/**
|
* 毫秒转日期
|
*
|
* @param millisecond
|
* @return
|
*/
|
public static String getDate_HH(long millisecond) {
|
if (millisecond == 0) {
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millisecond = getCurMilli();
|
}
|
SimpleDateFormat dateformat = new SimpleDateFormat("HH");
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Calendar calendar = getCalendar();
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calendar.setTimeInMillis(millisecond);
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return dateformat.format(calendar.getTime());
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}
|
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/**
|
* 毫秒转日期时间
|
*
|
* @param millisecond
|
* @return
|
*/
|
public static String getDateTime(long millisecond) {
|
if (millisecond == 0) {
|
millisecond = getCurMilli();
|
}
|
SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
Calendar calendar = getCalendar();
|
calendar.setTimeInMillis(millisecond);
|
return dateformat.format(calendar.getTime());
|
}
|
|
/**
|
* 毫秒转年月日
|
*
|
* @param millisecond
|
* @return
|
*/
|
public static String getDateYMD(long millisecond) {
|
if (millisecond == 0) {
|
millisecond = getCurMilli();
|
}
|
SimpleDateFormat dateformat = new SimpleDateFormat("yyyy年MM月dd日");
|
Calendar calendar = getCalendar();
|
calendar.setTimeInMillis(millisecond);
|
return dateformat.format(calendar.getTime());
|
}
|
|
/**
|
* 两日期相差毫秒
|
*
|
* @param startDate
|
* @param endDate
|
* @return
|
*/
|
public static long getMinusMillisecond(Date startDate, Date endDate) {
|
long startMillisecond = getMillisecond(startDate);
|
long endMillisecond = getMillisecond(endDate);
|
long minusMillisecond = endMillisecond - startMillisecond;
|
if (minusMillisecond < 0) {
|
minusMillisecond = 0;
|
}
|
return minusMillisecond;
|
}
|
|
/**
|
* 两日期相差天数
|
*
|
* @param startDate
|
* @param endDate
|
* @return
|
*/
|
public static long getMinusDay(Date startDate, Date endDate) {
|
long startMillisecond = getMillisecond(startDate);
|
long endMillisecond = getMillisecond(endDate);
|
long minusMillisecond = endMillisecond - startMillisecond;
|
long day = 0;
|
if (minusMillisecond < 0) {
|
day = 0;
|
} else {
|
day = minusMillisecond / (24 * 3600 * 1000);
|
}
|
return day;
|
}
|
|
/**
|
* 前N天毫秒
|
*
|
* @param day
|
* @return
|
*/
|
public static long getRetreatDay_millisecond(int day) {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
long nowMillisecond = 0;
|
try {
|
nowMillisecond = sdf.parse(sdf.format(DateUtil.getDate())).getTime();
|
} catch (ParseException e) {
|
e.printStackTrace();
|
}
|
nowMillisecond += 24 * 3600 * 1000;
|
long retreatMillisecond = 24 * 3600 * 1000 * day;
|
return nowMillisecond - retreatMillisecond;
|
}
|
|
/**
|
* 前N天时间
|
*
|
* @param day
|
* @return
|
*/
|
public static String getRetreatDay_millisecond1(int day) {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
long nowMillisecond = 0;
|
try {
|
nowMillisecond = sdf.parse(sdf.format(DateUtil.getDate())).getTime();
|
} catch (ParseException e) {
|
e.printStackTrace();
|
}
|
nowMillisecond += 24 * 3600 * 1000;
|
long retreatMillisecond = 24 * 3600 * 1000 * day;
|
long s = nowMillisecond - retreatMillisecond;
|
Date date = new Date(s);
|
String res = sdf.format(date);
|
return res;
|
}
|
|
// 当前时间前30天
|
public static String getRetreatDay_millisecond2() {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
Date today = new Date();
|
String endDate = sdf.format(today);// 当前日期
|
// 获取三十天前日期
|
Calendar theCa = Calendar.getInstance();
|
theCa.setTime(today);
|
theCa.add(theCa.DATE, -30);// 最后一个数字30可改，30天的意思
|
Date start = theCa.getTime();
|
String startDate = sdf.format(start);// 三十天之前日期
|
return startDate;
|
}
|
|
/**
|
* 日期转秒
|
*
|
* @param date
|
* @return
|
*/
|
public static long getDecond(Date date) {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
String newDate = "";
|
if (!"".equals(date)) {
|
newDate = sdf.format(date);
|
} else {
|
newDate = sdf.format(DateUtil.getDate());
|
}
|
long second = 0;
|
try {
|
second = sdf.parse(newDate).getTime() / 1000;
|
} catch (ParseException e) {
|
e.printStackTrace();
|
}
|
return second;
|
}
|
|
/**
|
* 日期转String
|
*
|
* @param date
|
* @return
|
* @throws ParseException
|
*/
|
public static String getDateToString(Date date,String pattern) throws ParseException {
|
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
|
String newDate = sdf.format(date);
|
long millisecond = sdf.parse(newDate).getTime();
|
Calendar calendar = getCalendar();
|
calendar.setTimeInMillis(millisecond);
|
return sdf.format(calendar.getTime());
|
}
|
|
|
/**
|
* 毫秒转星期XX
|
*
|
* @param millisecond
|
* @return
|
*/
|
public static int getDate_week(Long millisecond) {
|
if (millisecond == null) {
|
millisecond = getCurMilli();
|
}
|
Calendar cal = getCalendar();
|
cal.setTimeInMillis(millisecond);
|
return cal.get(Calendar.DAY_OF_WEEK) - 1;
|
|
}
|
|
/**
|
* 获取当前系统时间已yyyy-MM-dd HH:mm:ss格式化的字符串
|
*/
|
public static String nowStr() {
|
|
SimpleDateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
|
return dateFormat.format(getDate());
|
}
|
|
/**
|
*
|
* 获取之前几天日期
|
*
|
* @param pattern
|
* yyyy-MM-dd（默认）
|
* @param few
|
* 之前几天
|
*/
|
public static String beforeFewDayStr(String pattern, Integer few) {
|
|
if (pattern == null || "".equals(pattern)) {
|
pattern = "yyyy-MM-dd";
|
}
|
Calendar c = getCalendar();
|
c.add(Calendar.DATE, -few);
|
return new SimpleDateFormat(pattern).format(c.getTime());
|
}
|
|
|
/**
|
* 得到几天后的时间
|
*
|
* @param d
|
* @param day
|
* @return
|
*/
|
public static Date getDateAfter(Date d, int day) {
|
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
Calendar now = Calendar.getInstance();
|
now.setTime(d);
|
now.set(Calendar.DATE, now.get(Calendar.DATE) - day);//+后 -前
|
return now.getTime();
|
}
|
|
|
/**
|
* 获取今天日期
|
*
|
* @param pattern
|
* yyyy-MM-dd（默认）
|
*/
|
public static String todayStr(String pattern) {
|
|
if (pattern == null || "".equals(pattern)) {
|
pattern = "yyyy-MM-dd";
|
}
|
return new SimpleDateFormat(pattern).format(getDate());
|
}
|
|
/**
|
* 获取当前系统时间戳字符串
|
*/
|
public static String nowDateLongStr() {
|
|
return getDate().getTime() + "";
|
}
|
|
/**
|
* 获取当前系统时间
|
*
|
* @return
|
*/
|
public static Date now() {
|
|
return getDate();
|
}
|
|
|
/**
|
* 把日期往后增加一天. 正数往后推,负数往前移动
|
*
|
* @param day
|
* @return
|
*/
|
public static String getString(int day) {
|
Date date = new Date();// 取时间
|
Calendar calendar = new GregorianCalendar();
|
calendar.setTime(date);
|
calendar.add(calendar.DATE, day);// 把日期往后增加一天.整数往后推,负数往前移动
|
date = calendar.getTime(); // 这个时间就是日期往后推一天的结果
|
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
|
String dateString = formatter.format(date);
|
return dateString;
|
}
|
|
/**
|
* 根据当前日期获得所在周的日期区间（周一和周日日期）
|
*
|
* @return
|
* @author zhaoxuepu
|
* @throws ParseException
|
*/
|
public static String getTimeInterval(Date date) {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
Calendar cal = Calendar.getInstance();
|
cal.setTime(date);
|
// 判断要计算的日期是否是周日，如果是则减一天计算周六的，否则会出问题，计算到下一周去了
|
int dayWeek = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
|
if (1 == dayWeek) {
|
cal.add(Calendar.DAY_OF_MONTH, -1);
|
}
|
// System.out.println("要计算日期为:" + sdf.format(cal.getTime())); // 输出要计算日期
|
// 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一
|
cal.setFirstDayOfWeek(Calendar.MONDAY);
|
// 获得当前日期是一个星期的第几天
|
int day = cal.get(Calendar.DAY_OF_WEEK);
|
// 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值
|
cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);
|
String imptimeBegin = sdf.format(cal.getTime());
|
// System.out.println("所在周星期一的日期：" + imptimeBegin);
|
cal.add(Calendar.DATE, 6);
|
String imptimeEnd = sdf.format(cal.getTime());
|
// System.out.println("所在周星期日的日期：" + imptimeEnd);
|
return imptimeBegin + "," + imptimeEnd;
|
}
|
|
/**
|
* 根据当前日期获得上周的日期区间（上周周一和周日日期）
|
*
|
* @return
|
* @author zhaoxuepu
|
*/
|
public static String getLastTimeInterval() {
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
Calendar calendar1 = Calendar.getInstance();
|
Calendar calendar2 = Calendar.getInstance();
|
int dayOfWeek = calendar1.get(Calendar.DAY_OF_WEEK) - 1;
|
int offset1 = 1 - dayOfWeek;
|
int offset2 = 7 - dayOfWeek;
|
calendar1.add(Calendar.DATE, offset1 - 7);
|
calendar2.add(Calendar.DATE, offset2 - 7);
|
// System.out.println(sdf.format(calendar1.getTime()));// last Monday
|
String lastBeginDate = sdf.format(calendar1.getTime());
|
// System.out.println(sdf.format(calendar2.getTime()));// last Sunday
|
String lastEndDate = sdf.format(calendar2.getTime());
|
return lastBeginDate + "," + lastEndDate;
|
}
|
|
public static String DateYUE() {
|
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
|
String first = format.format(c.getTime());
|
|
// 获取当前月最后一天
|
Calendar ca = Calendar.getInstance();
|
ca.set(Calendar.DAY_OF_MONTH, ca.getActualMaximum(Calendar.DAY_OF_MONTH));
|
String last = format.format(ca.getTime());
|
return first + "," + last;
|
}
|
|
public static String getBeforeFirstMonthdate() {
|
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
Calendar calendar = Calendar.getInstance();
|
Calendar calendar1 = Calendar.getInstance();
|
calendar.add(Calendar.MONTH, -1);
|
calendar.set(Calendar.DAY_OF_MONTH, 1);
|
|
int month = calendar1.get(Calendar.MONTH);
|
calendar1.set(Calendar.MONTH, month - 1);
|
calendar1.set(Calendar.DAY_OF_MONTH, calendar1.getActualMaximum(Calendar.DAY_OF_MONTH));
|
String str = format.format(calendar.getTime());
|
String str1 = format.format(calendar1.getTime());
|
|
return str + "," + str1;
|
}
|
|
/**
|
* 获取某年第一天和最后一天日期
|
*
|
* @param year
|
* 年份
|
* @return Date
|
*/
|
|
public static String getYearFirst(int year) {
|
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
Calendar calendar = Calendar.getInstance();
|
calendar.clear();
|
calendar.set(Calendar.YEAR, year);
|
|
Calendar calendar1 = Calendar.getInstance();
|
calendar1.clear();
|
calendar1.set(Calendar.YEAR, year);
|
calendar1.roll(Calendar.DAY_OF_YEAR, -1);
|
|
String str = format.format(calendar.getTime());
|
String str1 = format.format(calendar1.getTime());
|
|
return str + "," + str1;
|
}
|
|
/**
|
* 在指定日期上增加N天
|
*/
|
public static Date addDate(Date date,long day) throws ParseException {
|
long time = date.getTime(); // 得到指定日期的毫秒数
|
day = day*24*60*60*1000; // 要加上的天数转换成毫秒数
|
time+=day; // 相加得到新的毫秒数
|
return new Date(time); // 将毫秒数转换成日期
|
}
|
|
|
// 获取一天开始和结束
|
public static String getDay() {
|
Date dBefore = new Date();
|
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); //设置时间格式
|
String defaultStartDate = sdf.format(dBefore); //格式化前一天
|
defaultStartDate = defaultStartDate+" 00:00:00";
|
String defaultEndDate = defaultStartDate.substring(0,10)+" 23:59:59";
|
|
return defaultStartDate + "," + defaultEndDate;
|
}
|
public static String getDay(Date date) {
|
return formatDate(date, "yyyy-MM-dd");
|
}
|
|
|
|
|
}
|
