forked from integrated_whb/integrated_whb
876 lines
28 KiB
Java
876 lines
28 KiB
Java
package com.zcloud.util;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.*;
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/**
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* 说明：日期处理
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* 作者：luoxiaobao
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* 官网：www.qdkjchina.com
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*/
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public class DateUtil {
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private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
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private final static SimpleDateFormat sdfMonth = new SimpleDateFormat("MM");
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private final static SimpleDateFormat sdfOnlyDay = new SimpleDateFormat("dd");
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private final static SimpleDateFormat sdfDay = new SimpleDateFormat("yyyy-MM-dd");
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private final static SimpleDateFormat sdfMDay = new SimpleDateFormat("yyyy-M-d");
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private final static SimpleDateFormat sdfDays = new SimpleDateFormat("yyyyMMdd");
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private final static SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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private final static SimpleDateFormat sdfTimes = new SimpleDateFormat("yyyyMMddHHmmss");
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/**
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* 获取YYYY格式
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*
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* @return
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*/
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public static String getSdfTimes() {
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return sdfTimes.format(new Date());
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}
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/**
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* 获取YYYY格式
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*
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* @return
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*/
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public static String getYear() {
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return sdfYear.format(new Date());
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}
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public static String getYear(Date date) {
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return sdfYear.format(date);
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}
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public static String getMonth() {
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return sdfMonth.format(new Date());
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}
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/**
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* 获取DD格式
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*
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* @return
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*/
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public static String getOnlyDay() {
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return sdfOnlyDay.format(new Date());
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}
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/**
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* 获取YYYY-MM-DD格式
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*
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* @return
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*/
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public static String getDay() {
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return sdfDay.format(new Date());
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}
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public static String MDay() {
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return sdfMDay.format(new Date());
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}
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/**
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* 获取YYYYMMDD格式
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*
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* @return
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*/
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public static String getDays() {
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return sdfDays.format(new Date());
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}
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/**
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* 获取YYYY-MM-DD HH:mm:ss格式
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*
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* @return
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*/
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public static String getTime() {
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return sdfTime.format(new Date());
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}
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/**
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* @param s
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* @param e
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* @return boolean
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* @throws
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* @Title: compareDate
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* @Description: TODO(日期比较 ， 如果s > = e 返回true 否则返回false)
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* @author fh
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*/
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public static boolean compareDate(String s, String e) {
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if (fomatDate(s) == null || fomatDate(e) == null) {
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return false;
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}
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return fomatDate(s).getTime() >= fomatDate(e).getTime();
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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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* @return
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*/
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public static Date fomatDate(String date) {
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DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
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try {
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return fmt.parse(date);
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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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/**
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* 格式化日期
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*
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* @return
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*/
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public static Date fomatDateTime(String date) {
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DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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try {
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return fmt.parse(date);
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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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/**
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* 校验日期是否合法
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*
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* @return
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*/
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public static boolean isValidDate(String s) {
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DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
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try {
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fmt.parse(s);
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return true;
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} catch (Exception e) {
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return false; // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
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}
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}
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/**
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* @param startTime
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* @param endTime
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* @return
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*/
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public static int getDiffYear(String startTime, String endTime) {
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DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
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try {
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int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365);
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return years;
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} catch (Exception e) {
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return 0; // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
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}
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}
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/**
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* <li>功能描述：时间相减得到天数
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*
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* @param beginDateStr
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* @param endDateStr
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* @return long
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* @author Administrator
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*/
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public static long getDaySub(String beginDateStr, String endDateStr) {
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long day = 0;
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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Date beginDate = null;
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Date endDate = null;
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try {
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beginDate = format.parse(beginDateStr);
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endDate = format.parse(endDateStr);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
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//System.out.println("相隔的天数="+day);
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return day;
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}
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/**
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* 得到n天之后的日期
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*
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* @param days
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* @return
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*/
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public static String getAfterDayDate(String days) {
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int daysInt = Integer.parseInt(days);
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Calendar canlendar = Calendar.getInstance(); // java.util包
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canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
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Date date = canlendar.getTime();
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SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String dateStr = sdfd.format(date);
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return dateStr;
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}
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/**
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* 当前时间加n小时之后的时间
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*
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* @param days
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* @return
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*/
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public static String getAfterHourDate(String hours) {
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int hoursInt = Integer.parseInt(hours);
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Calendar canlendar = Calendar.getInstance(); // java.util包
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canlendar.add(Calendar.HOUR, hoursInt); // 日期减 如果不够减会将月变动
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Date date = canlendar.getTime();
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SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String dateStr = sdfd.format(date);
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return dateStr;
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}
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/**
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* 得到n天之后是周几
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*
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* @param days
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* @return
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*/
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public static String getAfterDayWeek(String days) {
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int daysInt = Integer.parseInt(days);
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Calendar canlendar = Calendar.getInstance(); // java.util包
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canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
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Date date = canlendar.getTime();
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SimpleDateFormat sdf = new SimpleDateFormat("E");
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String dateStr = sdf.format(date);
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return dateStr;
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}
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/**
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* 按照yyyy-MM-dd HH:mm:ss的格式，日期转字符串
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*
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* @param date
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* @return yyyy-MM-dd HH:mm:ss
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*/
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public static String date2Str(Date date) {
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return date2Str(date, "yyyy-MM-dd HH:mm:ss");
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}
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public static String date3Str(Date date) {
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return date2Str(date, "yyyy-M-d");
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}
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/**
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* 按照yyyy-MM-dd HH:mm:ss的格式，字符串转日期
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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 str2Date(String date) {
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if (Tools.notEmpty(date)) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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try {
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return sdf.parse(date);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return new Date();
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} else {
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return null;
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}
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}
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/**
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* 把时间根据时、分、秒转换为时间段
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*
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* @param StrDate
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*/
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public static String getTimes(String StrDate) {
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String resultTimes = "";
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SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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Date now;
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try {
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now = new Date();
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Date date = df.parse(StrDate);
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long times = now.getTime() - date.getTime();
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long day = times / (24 * 60 * 60 * 1000);
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long hour = (times / (60 * 60 * 1000) - day * 24);
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long min = ((times / (60 * 1000)) - day * 24 * 60 - hour * 60);
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long sec = (times / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
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StringBuffer sb = new StringBuffer();
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//sb.append("发表于：");
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if (hour > 0) {
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sb.append(hour + "小时前");
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} else if (min > 0) {
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sb.append(min + "分钟前");
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} else {
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sb.append(sec + "秒前");
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}
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resultTimes = sb.toString();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return resultTimes;
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}
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/**
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* 按照参数format的格式，日期转字符串
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*
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* @param date
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* @param format
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* @return
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*/
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public static String date2Str(Date date, String format) {
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if (date != null) {
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SimpleDateFormat sdf = new SimpleDateFormat(format);
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return sdf.format(date);
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} else {
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return "";
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}
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}
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/**
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* 获取当年的第一天
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*
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* @param year
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* @return
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* @author zhangyue
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*/
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public static String getCurrYearFirst() {
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Calendar currCal = Calendar.getInstance();
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int currentYear = currCal.get(Calendar.YEAR);
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Calendar calendar = Calendar.getInstance();
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calendar.clear();
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calendar.set(Calendar.YEAR, currentYear);
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Date currYearFirst = calendar.getTime();
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return sdfDay.format(currYearFirst);
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}
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/**
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* 获取当年的最后一天
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*
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* @param year
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* @return
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* @author zhangyue
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*/
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public static String getCurrYearLast() {
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Calendar currCal = Calendar.getInstance();
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int currentYear = currCal.get(Calendar.YEAR);
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Calendar calendar = Calendar.getInstance();
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calendar.clear();
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calendar.set(Calendar.YEAR, currentYear);
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calendar.roll(Calendar.DAY_OF_YEAR, -1);
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Date currYearLast = calendar.getTime();
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return sdfDay.format(currYearLast);
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}
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/**
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* 获取当前季度第一天
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*
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* @return
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* @author zhangyue
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*/
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public static String quarterStart() {
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Date dBegin = new Date();
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Calendar calBegin = Calendar.getInstance();
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calBegin.setTime(dBegin);
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int remainder = calBegin.get(Calendar.MONTH) % 3;
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int month = remainder != 0 ? calBegin.get(Calendar.MONTH) - remainder : calBegin.get(Calendar.MONTH);
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calBegin.set(Calendar.MONTH, month);
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calBegin.set(Calendar.DAY_OF_MONTH, calBegin.getActualMinimum(Calendar.DAY_OF_MONTH));
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calBegin.setTime(calBegin.getTime());
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return sdfDay.format(calBegin.getTime());
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}
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/**
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* 获取当前季度最后一天
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*
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* @return
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* @author zhangyue
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*/
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public static String quarterEnd() {
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Date dEnd = new Date();
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(dEnd);
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int remainder = (calendar.get(Calendar.MONTH) + 1) % 3;
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int month = remainder != 0 ? calendar.get(Calendar.MONTH) + (3 - remainder) : calendar.get(Calendar.MONTH);
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calendar.set(Calendar.MONTH, month);
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calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
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calendar.setTime(calendar.getTime());
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return sdfDay.format(calendar.getTime());
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}
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/**
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* 获取本月第一天日期
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*
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* @return
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*/
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public static String getMonthFirstDay() {
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Calendar thisMonthFirstDateCal = Calendar.getInstance();
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thisMonthFirstDateCal.set(Calendar.DAY_OF_MONTH, 1);
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String thisMonthFirstTime = sdfDay.format(thisMonthFirstDateCal.getTime());
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return thisMonthFirstTime;
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}
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/**
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* 获取本月最后一天日期
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*
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* @return
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*/
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public static String getMonthEndDay() {
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Calendar thisMonthEndDateCal = Calendar.getInstance();
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thisMonthEndDateCal.set(Calendar.DAY_OF_MONTH, thisMonthEndDateCal.getActualMaximum(Calendar.DAY_OF_MONTH));
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String thisMonthEndTime = sdfDay.format(thisMonthEndDateCal.getTime());
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return thisMonthEndTime;
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}
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public static boolean timeCalendar(Date nowTime, Date amBeginTime, Date amEndTime) {
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//设置当前时间
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Calendar date = Calendar.getInstance();
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date.setTime(nowTime);
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//设置开始时间
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Calendar amBegin = Calendar.getInstance();
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amBegin.setTime(amBeginTime);//上午开始时间
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//设置结束时间
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Calendar amEnd = Calendar.getInstance();
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amEnd.setTime(amEndTime);//上午结束时间
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//处于开始时间之后，和结束时间之前的判断
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if ((date.after(amBegin) && date.before(amEnd))) {
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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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* 获取本周的第一天
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*
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* @return String
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**/
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public static String getWeekStart() {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // 设置时间格式
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Calendar cal = Calendar.getInstance();
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// Calendar c = Calendar.getInstance();
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cal.add(Calendar.DAY_OF_MONTH, 0);
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// cal.setTime(time);
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// 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
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int dayWeek = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
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if (1 == dayWeek) {
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cal.add(Calendar.DAY_OF_MONTH, -1);
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}
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cal.setFirstDayOfWeek(Calendar.MONDAY);// 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
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int day = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
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cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);// 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
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/*
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* cal.add(Calendar.DATE, 6);
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* System.out.println("所在周星期日的日期："+sdf.format(cal.getTime()));
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*/
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return new SimpleDateFormat("yyyy-MM-dd").format(cal.getTime()) + " 00:00:00";
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}
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/**
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* 获取本周的最后一天
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*
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* @return String
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**/
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public static String getWeekEnd() {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // 设置时间格式
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Calendar cal = Calendar.getInstance();
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// Calendar c = Calendar.getInstance();
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cal.add(Calendar.DAY_OF_MONTH, 0);
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// cal.setTime(time);
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// 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
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int dayWeek = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
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if (1 == dayWeek) {
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cal.add(Calendar.DAY_OF_MONTH, -1);
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}
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cal.setFirstDayOfWeek(Calendar.MONDAY);// 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
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int day = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
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cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);// 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
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cal.add(Calendar.DATE, 6);
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return new SimpleDateFormat("yyyy-MM-dd").format(cal.getTime()) + " 23:59:59";
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}
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/**
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* 判断时间格式 格式必须为“YYYY-MM-dd”
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* 2004-2-30 是无效的
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* 2003-2-29 是无效的
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*
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* @param sDate
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* @return
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*/
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public static boolean isLegalDate(String sDate) {
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int legalLen = 10;
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if ((sDate == null) || (sDate.length() != legalLen)) {
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return false;
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}
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DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
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try {
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Date date = formatter.parse(sDate);
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return sDate.equals(formatter.format(date));
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} catch (Exception e) {
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return false;
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}
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}
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/**
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||
* 时间比较
|
||
*
|
||
* @param amBeginTime
|
||
* @param amEndTime
|
||
* @return
|
||
*/
|
||
public static boolean timeCompare(Date amBeginTime, Date amEndTime) {
|
||
//设置开始时间
|
||
Calendar amBegin = Calendar.getInstance();
|
||
amBegin.setTime(amBeginTime);//上午开始时间
|
||
//设置结束时间
|
||
Calendar amEnd = Calendar.getInstance();
|
||
amEnd.setTime(amEndTime);//上午结束时间
|
||
//开始时间是否早于结束时间
|
||
if (amBegin.before(amEnd)) {
|
||
return true;
|
||
} else {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 获取6个月内月份日期
|
||
*
|
||
* @param flag 结果是否显示年份
|
||
* @return
|
||
*/
|
||
public static List<String> getHalfYearMonth(boolean flag) {
|
||
Calendar c = Calendar.getInstance();
|
||
c.add(Calendar.MONTH, -4);
|
||
String before_six = c.get(Calendar.YEAR) + "-" + c.get(Calendar.MONTH);// 六个月前
|
||
List<String> result = new ArrayList<String>();
|
||
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");// 格式化为年月
|
||
Calendar min = Calendar.getInstance();
|
||
Calendar max = Calendar.getInstance();
|
||
try {
|
||
min.setTime(sdf.parse(before_six));
|
||
min.set(min.get(Calendar.YEAR), min.get(Calendar.MONTH), 1);
|
||
max.setTime(sdf.parse(sdf.format(new Date())));
|
||
|
||
//不含当前月
|
||
|
||
/* int month = max.get(Calendar.MONTH);
|
||
max.set(Calendar.MONTH, month-1);
|
||
*/
|
||
} catch (ParseException e) {
|
||
e.printStackTrace();
|
||
}
|
||
max.set(max.get(Calendar.YEAR), max.get(Calendar.MONTH), 2);
|
||
Calendar curr = min;
|
||
while (curr.before(max)) {
|
||
if (flag) {
|
||
result.add(sdf.format(curr.getTime()));
|
||
} else {
|
||
result.add(curr.get(Calendar.MONTH) + 1 + "月");
|
||
}
|
||
curr.add(Calendar.MONTH, 1);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
//根据当前日期获得最近n周的日期区间（不包含本周）
|
||
public static String getFromToDate(SimpleDateFormat sdf, Date date, int n, int option, int k) {
|
||
Calendar calendar = Calendar.getInstance();
|
||
calendar.setTime(date);
|
||
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1;
|
||
int offset = 0 == option ? 1 - dayOfWeek : 7 - dayOfWeek;
|
||
int amount = 0 == option ? offset - (n - 1 + k) * 7 : offset - k * 7;
|
||
calendar.add(Calendar.DATE, amount);
|
||
return sdf.format(calendar.getTime());
|
||
}
|
||
|
||
public static SimpleDateFormat sdf() {
|
||
return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
||
}
|
||
|
||
// 获取上周的开始时间
|
||
public static String getBeginDayOfLastWeek() {
|
||
//上周日期
|
||
SimpleDateFormat sdf = sdf();
|
||
String beginDate = getFromToDate(sdf, new Date(), 1, 0, 1);
|
||
|
||
Calendar calendar = Calendar.getInstance();
|
||
try {
|
||
calendar.setTime(sdf.parse(beginDate));
|
||
} catch (Exception e) {
|
||
e.printStackTrace();
|
||
}
|
||
calendar.set(Calendar.HOUR_OF_DAY, 0);
|
||
calendar.set(Calendar.MINUTE, 0);
|
||
calendar.set(Calendar.SECOND, 0);
|
||
calendar.set(Calendar.MILLISECOND, 0);
|
||
return sdf.format(calendar.getTime());
|
||
}
|
||
|
||
// 获取上周的结束时间
|
||
public static String getEndDayOfLastWeek() {
|
||
//上周日期
|
||
SimpleDateFormat sdf = sdf();
|
||
String endDate = getFromToDate(sdf, new Date(), 1, 1, 1);
|
||
|
||
Calendar calendar = Calendar.getInstance();
|
||
try {
|
||
calendar.setTime(sdf.parse(endDate));
|
||
} catch (Exception e) {
|
||
e.printStackTrace();
|
||
}
|
||
calendar.set(Calendar.HOUR_OF_DAY, 23);
|
||
calendar.set(Calendar.MINUTE, 59);
|
||
calendar.set(Calendar.SECOND, 59);
|
||
return sdf.format(calendar.getTime());
|
||
}
|
||
|
||
// 获得上月第一天0点时间
|
||
public static String getTimesLastMonthmorning() {
|
||
//上月日期
|
||
Calendar c = Calendar.getInstance();
|
||
c.add(Calendar.MONTH, -1);
|
||
SimpleDateFormat sdf = sdf();
|
||
String gtimelast = sdf.format(c.getTime()); //上月
|
||
int lastMonthMaxDay = c.getActualMaximum(Calendar.DAY_OF_MONTH);
|
||
c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), lastMonthMaxDay, 23, 59, 59);
|
||
|
||
//按格式输出
|
||
SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-01 00:00:00");
|
||
String gtime = sdf2.format(c.getTime()); //上月第一天
|
||
return gtime;
|
||
}
|
||
|
||
// 获得上月最后一天24点时间
|
||
public static String getTimesLastMonthnight() {
|
||
//上月日期
|
||
Calendar c = Calendar.getInstance();
|
||
c.add(Calendar.MONTH, -1);
|
||
SimpleDateFormat sdf = sdf();
|
||
String gtimelast = sdf.format(c.getTime()); //上月
|
||
int lastMonthMaxDay = c.getActualMaximum(Calendar.DAY_OF_MONTH);
|
||
c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), lastMonthMaxDay, 23, 59, 59);
|
||
|
||
//按格式输出
|
||
String gtime = sdf.format(c.getTime()); //上月最后一天
|
||
return gtime;
|
||
}
|
||
|
||
/**
|
||
* 获取上一季度 开始和结束时间
|
||
*
|
||
* @return
|
||
*/
|
||
public static String[] getLastQuarter() {
|
||
SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd");
|
||
String[] range = new String[2];
|
||
Calendar startCalendar = Calendar.getInstance();
|
||
startCalendar.set(Calendar.MONTH, ((int) startCalendar.get(Calendar.MONTH) / 3 - 1) * 3);
|
||
startCalendar.set(Calendar.DAY_OF_MONTH, 1);
|
||
Date startDate = startCalendar.getTime();
|
||
range[0] = sdfd.format(startDate);
|
||
|
||
Calendar endCalendar = Calendar.getInstance();
|
||
endCalendar.set(Calendar.MONTH, ((int) endCalendar.get(Calendar.MONTH) / 3 - 1) * 3 + 2);
|
||
endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
|
||
Date endDate = endCalendar.getTime();
|
||
range[1] = sdfd.format(endDate);
|
||
return range;
|
||
}
|
||
|
||
/**
|
||
* 获取当日期前/后某个月的所有日期 0 本月 负数 之前的月份 。正数 之后的月份
|
||
*
|
||
* @param months
|
||
* @return
|
||
*/
|
||
public static List<String> getDayListOfMonth(Integer months) {
|
||
List<String> list = new ArrayList<>();
|
||
Calendar cal = Calendar.getInstance();
|
||
cal.set(Calendar.MONTH, cal.get(Calendar.MONTH) + months);
|
||
int month = cal.get(Calendar.MONTH) + 1;
|
||
String monthStr = month < 10 ? "0" + month : String.valueOf(month);
|
||
int year = cal.get(Calendar.YEAR);
|
||
int day = cal.getActualMaximum(Calendar.DATE);
|
||
for (int i = 1; i <= day; i++) {
|
||
String d = String.valueOf(i);
|
||
if (i < 10) {
|
||
d = "0" + d;
|
||
}
|
||
list.add(year + "-" + monthStr + "-" + d);
|
||
}
|
||
return list;
|
||
}
|
||
|
||
/**
|
||
* 计算两个日期之间相差的天数
|
||
*
|
||
* @param smdate 较小的时间
|
||
* @param bdate 较大的时间
|
||
* @return 相差天数
|
||
* @throws ParseException
|
||
*/
|
||
public static int daysBetween(Date smdate, Date bdate) {
|
||
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
||
|
||
try {
|
||
smdate = sdf.parse(sdf.format(smdate));
|
||
bdate = sdf.parse(sdf.format(bdate));
|
||
} catch (ParseException e) {
|
||
// TODO Auto-generated catch block
|
||
e.printStackTrace();
|
||
}
|
||
Calendar cal = Calendar.getInstance();
|
||
cal.setTime(smdate);
|
||
long time1 = cal.getTimeInMillis();
|
||
cal.setTime(bdate);
|
||
long time2 = cal.getTimeInMillis();
|
||
long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
||
|
||
return Integer.parseInt(String.valueOf(between_days));
|
||
}
|
||
|
||
/**
|
||
* 字符串的日期格式的计算
|
||
*/
|
||
public static int daysBetween(String smdate, String bdate) {
|
||
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
||
Calendar cal = Calendar.getInstance();
|
||
long time1 = 0;
|
||
long time2 = 0;
|
||
try {
|
||
cal.setTime(sdf.parse(smdate));
|
||
time1 = cal.getTimeInMillis();
|
||
cal.setTime(sdf.parse(bdate));
|
||
time2 = cal.getTimeInMillis();
|
||
} catch (ParseException e) {
|
||
// TODO Auto-generated catch block
|
||
e.printStackTrace();
|
||
}
|
||
|
||
long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
||
|
||
return Integer.parseInt(String.valueOf(between_days));
|
||
}
|
||
|
||
/**
|
||
* 得到几天前的时间
|
||
*
|
||
* @param d
|
||
* @param day
|
||
* @return
|
||
*/
|
||
public static Date getDateBefore(Date d, int day) {
|
||
Calendar now = Calendar.getInstance();
|
||
now.setTime(d);
|
||
now.set(Calendar.DATE, now.get(Calendar.DATE) - day);
|
||
return now.getTime();
|
||
}
|
||
|
||
/**
|
||
* 得到几天后的时间
|
||
*
|
||
* @param d
|
||
* @param day
|
||
* @return
|
||
*/
|
||
public static Date getDateAfter(Date d, int day) {
|
||
Calendar now = Calendar.getInstance();
|
||
now.setTime(d);
|
||
now.set(Calendar.DATE, now.get(Calendar.DATE) + day - 1);
|
||
return now.getTime();
|
||
}
|
||
|
||
|
||
/**
|
||
* 格式化日期
|
||
*
|
||
* @return
|
||
*/
|
||
public static Date fomatDateByNian(String date) {
|
||
DateFormat fmt = new SimpleDateFormat("yyyy年MM月dd日");
|
||
try {
|
||
return fmt.parse(date);
|
||
} catch (ParseException e) {
|
||
e.printStackTrace();
|
||
return null;
|
||
}
|
||
}
|
||
|
||
public static void main(String[] args) {
|
||
String afterHourDate = DateUtil.getAfterHourDate("12");
|
||
System.out.println(afterHourDate);
|
||
|
||
}
|
||
|
||
/**
|
||
* 时间换算（秒级）
|
||
*/
|
||
public static String calculateDateSecond(String dateStr, int second) {
|
||
Date date = str2Date(dateStr);
|
||
if (date != null) {
|
||
Calendar calendar = Calendar.getInstance();
|
||
calendar.setTime(date);
|
||
calendar.add(Calendar.SECOND, second);
|
||
SimpleDateFormat sdf = sdf();
|
||
return sdf.format(calendar.getTime());
|
||
}
|
||
return "";
|
||
}
|
||
|
||
/**
|
||
* @Description: 返回从当前月份到指定月份的开始和结束时间
|
||
* {dateBegin=2023-07-01 00:00:00, month=2023-07, dateEnd=2023-07-31 23:59:59}
|
||
* {dateBegin=2023-08-01 00:00:00, month=2023-08, dateEnd=2023-08-31 23:59:59}
|
||
* {dateBegin=2023-09-01 00:00:00, month=2023-09, dateEnd=2023-09-30 23:59:59}
|
||
* {dateBegin=2023-10-01 00:00:00, month=2023-10, dateEnd=2023-10-31 23:59:59}
|
||
* {dateBegin=2023-11-01 00:00:00, month=2023-11, dateEnd=2023-11-30 23:59:59}
|
||
* {dateBegin=2023-12-01 00:00:00, month=2023-12, dateEnd=2023-12-31 23:59:59}
|
||
* {dateBegin=2024-01-01 00:00:00, month=2024-01, dateEnd=2024-01-31 23:59:59}
|
||
* @Author: dearLin
|
||
* @Date: 2024/1/29/029 14:12
|
||
* @Param: [] []
|
||
* @Return: java.util.List<java.util.Map<java.lang.String,java.lang.String>>
|
||
*/
|
||
public static List<Map<String, String>> generateTimeArraySevenMonth(int monthIndex) {
|
||
List<Map<String, String>> timeArray = new ArrayList<>();
|
||
Calendar calendar = Calendar.getInstance();
|
||
|
||
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
||
|
||
for (int i = monthIndex; i >= 0; i--) {
|
||
Map<String, String> monthInfo = new HashMap<>();
|
||
|
||
int year = calendar.get(Calendar.YEAR);
|
||
int month = calendar.get(Calendar.MONTH) + 1;
|
||
|
||
String monthString = String.format(year + "-%02d", month);
|
||
String firstDayOfMonth = String.format("%04d-%02d-01 00:00:00", year, month);
|
||
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
|
||
calendar.set(Calendar.HOUR_OF_DAY, 23);
|
||
calendar.set(Calendar.MINUTE, 59);
|
||
calendar.set(Calendar.SECOND, 59);
|
||
String lastDayOfMonth = dateFormat.format(calendar.getTime());
|
||
|
||
monthInfo.put("month", monthString);
|
||
monthInfo.put("dateBegin", firstDayOfMonth);
|
||
monthInfo.put("dateEnd", lastDayOfMonth);
|
||
|
||
timeArray.add(monthInfo);
|
||
|
||
calendar.add(Calendar.MONTH, -1); // Go to the previous month
|
||
}
|
||
Collections.reverse(timeArray);
|
||
return timeArray;
|
||
}
|
||
}
|