package cn.huge.module.utils;
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import org.springframework.util.StringUtils;
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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.Calendar;
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import java.util.Date;
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/**
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* 时间工具类
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*/
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public class TimeUtils {
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public static final String DEFAULT_PATTERN = "yyyy-MM-dd";
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public static final String STANDARD_PATTERN = "yyyy-MM-dd HH:mm:ss";
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public static String format(Date date) {
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return format(date, DEFAULT_PATTERN);
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}
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public static String format(Date date, String pattern) {
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if (date == null) {
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return "";
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}
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DateFormat dateFormat = new SimpleDateFormat(pattern);
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return dateFormat.format(date);
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}
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/**
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* 解析时间
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* @param dateStr
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* @return
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* @throws ParseException
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*/
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public static Date parse(String dateStr) throws ParseException {
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if(StringUtils.isEmpty(dateStr)) {
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return null;
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}
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat(STANDARD_PATTERN);
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return simpleDateFormat.parse(dateStr);
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}
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/**
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* 所在周的开始
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* @param date
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* @return
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*/
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public static Date startOfWeek(Date date) {
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if (date == null) {
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return null;
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}
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Calendar c = Calendar.getInstance();
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c.setTime(date);
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c.setFirstDayOfWeek(Calendar.MONDAY);
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c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
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c.set(Calendar.HOUR_OF_DAY, 0);
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c.set(Calendar.MINUTE, 0);
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c.set(Calendar.SECOND, 0);
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return c.getTime();
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}
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/**
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* 所在周的结束
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* @param date
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* @return
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*/
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public static Date endOfWeek(Date date) {
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if (date == null) {
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return null;
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}
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Calendar c = Calendar.getInstance();
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c.setTime(date);
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c.setFirstDayOfWeek(Calendar.MONDAY);
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c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
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c.set(Calendar.HOUR_OF_DAY, 23);
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c.set(Calendar.MINUTE, 59);
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c.set(Calendar.SECOND, 59);
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return c.getTime();
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}
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/**
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* 所在月的开始
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* @param date
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* @return
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*/
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public static Date startOfMonth(Date date) {
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if (date == null) {
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return null;
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}
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Calendar c = Calendar.getInstance();
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c.setTime(date);
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c.set(Calendar.DAY_OF_MONTH, 1);
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c.set(Calendar.HOUR_OF_DAY, 0);
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c.set(Calendar.MINUTE, 0);
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c.set(Calendar.SECOND, 0);
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return c.getTime();
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}
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/**
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* 所在月的结束
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* @param date
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* @return
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*/
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public static Date endOfMonth(Date date) {
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if (date == null) {
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return null;
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}
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Calendar c = Calendar.getInstance();
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c.setTime(date);
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c.set(Calendar.DAY_OF_MONTH, c.getActualMaximum(Calendar.DAY_OF_MONTH));
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c.set(Calendar.HOUR_OF_DAY, 23);
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c.set(Calendar.MINUTE, 59);
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c.set(Calendar.SECOND, 59);
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return c.getTime();
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}
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/**
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* 本月开始
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* @return
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*/
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public static Date startOfCurMonth() {
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return startOfMonth(new Date());
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}
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/**
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* 本月结束
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* @return
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*/
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public static Date endOfCurMonth() {
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return endOfMonth(new Date());
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}
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/**
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* 上月开始
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* @return
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*/
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public static Date startOfPreMonth() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(startOfCurMonth());
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calendar.add(Calendar.MONTH, -1);
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return calendar.getTime();
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}
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/**
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* 上月结束
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* @return
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*/
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public static Date endOfPreMonth() {
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Calendar calendar = Calendar.getInstance();
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calendar.add(Calendar.MONTH, -1);
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calendar.setTime(endOfMonth(calendar.getTime()));
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return calendar.getTime();
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}
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/**
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* 本周开始
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* @return
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*/
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public static Date startOfCurWeek() {
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return startOfWeek(new Date());
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}
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/**
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* 本周结束
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* @return
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*/
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public static Date endOfCurWeek() {
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return endOfWeek(new Date());
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}
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/**
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* 上周开始
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* @return
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*/
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public static Date startOfPreWeek() {
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Date curMon = startOfCurWeek();
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Calendar c = Calendar.getInstance();
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c.setTime(curMon);
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c.add(Calendar.DAY_OF_WEEK, -7);
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return c.getTime();
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}
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/**
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* 上周结束
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* @return
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*/
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public static Date endOfPreWeek() {
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Date curSun = endOfCurWeek();
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Calendar c = Calendar.getInstance();
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c.setTime(curSun);
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c.add(Calendar.DAY_OF_WEEK, -7);
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return c.getTime();
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}
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/**
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* 一天的结束
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* @param date
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* @return
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*/
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public static Date endOf(Date date) {
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if (date == null) {
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return null;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.set(Calendar.HOUR_OF_DAY, 23);
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calendar.set(Calendar.MINUTE, 59);
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calendar.set(Calendar.SECOND, 59);
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return calendar.getTime();
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}
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/**
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* 一天的开始
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* @param date
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* @return
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*/
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public static Date startOf(Date date) {
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if (date == null) {
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return null;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(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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calendar.set(Calendar.MILLISECOND,0);
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return calendar.getTime();
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}
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/**
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* 昨天的开始
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* @return
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*/
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public static Date startOfYesterday() {
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Calendar calendar = Calendar.getInstance();
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calendar.add(Calendar.DAY_OF_MONTH, -1);
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return startOf(calendar.getTime());
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}
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/**
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* 昨天的结束
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* @return
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*/
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public static Date endOfYesterday() {
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Calendar calendar = Calendar.getInstance();
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calendar.add(Calendar.DAY_OF_MONTH, -1);
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return endOf(calendar.getTime());
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}
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/**
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* 获取几天之后的日期
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*
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* @param date
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* @param after
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* @return
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*/
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public static Date after(Date date, int after) {
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if (date == null) {
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return null;
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}
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if (after <= 0) {
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return date;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.add(Calendar.DATE, after);
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return calendar.getTime();
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}
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/**
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* 获取几天之前的日期
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*
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* @param date
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* @param before
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* @return
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*/
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public static Date before(Date date, int before) {
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if (date == null) {
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return null;
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}
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if (before <= 0) {
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return date;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.add(Calendar.DATE, -1 * before);
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return calendar.getTime();
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}
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public static Date startOfHour(Date date) {
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if (date == null) {
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return null;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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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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public static Date endOfHour(Date date) {
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if (date == null) {
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return null;
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}
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.set(Calendar.MINUTE, 59);
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calendar.set(Calendar.SECOND, 59);
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return calendar.getTime();
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}
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/**
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* 获取两个时间相差的月数
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* @param date1
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* @param date2
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* @return
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*/
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public static int getMonthSpace(Date date1,Date date2)
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{
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int iMonth = 0;
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int flag = 0;
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try{
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Calendar objCalendarDate1 = Calendar.getInstance();
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objCalendarDate1.setTime(date1);
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Calendar objCalendarDate2 = Calendar.getInstance();
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objCalendarDate2.setTime(date2);
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if (objCalendarDate2.equals(objCalendarDate1)) {
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return 0;
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}
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if (objCalendarDate1.after(objCalendarDate2)){
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Calendar temp = objCalendarDate1;
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objCalendarDate1 = objCalendarDate2;
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objCalendarDate2 = temp;
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}
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if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) < objCalendarDate1.get(Calendar.DAY_OF_MONTH)) {
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flag = 1;
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}
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if (objCalendarDate2.get(Calendar.YEAR) > objCalendarDate1.get(Calendar.YEAR)) {
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iMonth = ((objCalendarDate2.get(Calendar.YEAR) - objCalendarDate1.get(Calendar.YEAR))
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* 12 + objCalendarDate2.get(Calendar.MONTH) - flag)
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- objCalendarDate1.get(Calendar.MONTH);
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} else {
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iMonth = objCalendarDate2.get(Calendar.MONTH)
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- objCalendarDate1.get(Calendar.MONTH) - flag;
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}
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} catch (Exception e){
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e.printStackTrace();
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}
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return iMonth;
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}
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/**
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* 得到日期num个月时的日期
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* num为正数 为date后num个月
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* num为负数 为date前num个月
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* @param date
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* @param num
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* @return
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*/
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public static Date getDateOfMonth(Date date,int num){
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if(date == null){
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return null;
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}
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Calendar calendar = Calendar.getInstance(); //得到日历
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calendar.setTime(date); //把当前时间赋给日历
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calendar.add(Calendar.MONTH, num); //设置为前num月
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return calendar.getTime();
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}
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/**
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* 获得两个时间相差的天数
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* @param minDate
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* @param maxDate
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* @return
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*/
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public static int getDaySpace(Date minDate,Date maxDate){
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int days = (int) ((maxDate.getTime() - minDate.getTime()) / (1000*3600*24));
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return Math.abs(days);
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}
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}
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