实例如下：
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package bys.utils;import java.util.Date;/** * Created by toutou on 2015/3/23. */public class DateHelper { public static final long ONE_MINUTE = 60000L; public static final long ONE_HOUR = 3600000L; public static final long ONE_DAY = 86400000L; public static final long ONE_WEEK = 604800000L; private static final String ONE_SECOND_AGO = "秒前"; private static final String ONE_MINUTE_AGO = "分钟前"; private static final String ONE_HOUR_AGO = "小时前"; private static final String ONE_DAY_AGO = "天前"; private static final String ONE_MONTH_AGO = "月前"; private static final String ONE_YEAR_AGO = "年前"; private static long toSeconds(long date) { return date / 1000L; } private static long toMinutes(long date) { return toSeconds(date) / 60L; } private static long toHours(long date) { return toMinutes(date) / 60L; } private static long toDays(long date) { return toHours(date) / 24L; } private static long toMonths(long date) { return toDays(date) / 30L; } private static long toYears(long date) { return toMonths(date) / 365L; } public static String getPastTime(Date date) { long delta = new Date().getTime() - date.getTime(); if (delta < 1L * ONE_MINUTE) { long seconds = toSeconds(delta); return (seconds <= 0 ? 1 : seconds) + ONE_SECOND_AGO; } if (delta < 45L * ONE_MINUTE) { long minutes = toMinutes(delta); return (minutes <= 0 ? 1 : minutes) + ONE_MINUTE_AGO; } if (delta < 24L * ONE_HOUR) { long hours = toHours(delta); return (hours <= 0 ? 1 : hours) + ONE_HOUR_AGO; } if (delta < 48L * ONE_HOUR) { return "昨天"; } if (delta < 30L * ONE_DAY) { long days = toDays(delta); return (days <= 0 ? 1 : days) + ONE_DAY_AGO; } if (delta < 12L * 4L * ONE_WEEK) { long months = toMonths(delta); return (months <= 0 ? 1 : months) + ONE_MONTH_AGO; } else { long years = toYears(delta); return (years <= 0 ? 1 : years) + ONE_YEAR_AGO; } }} |
调用示例：
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String time = DateHelper.getPastTime(Date.from(item.getCreateTime().atZone(ZoneId.systemDefault()).toInstant())); |
以上这篇java 获取日期的几天前,几个月前和几年前的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/toutou/archive/2017/10/30/7495454.html
