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package com.rengh.utils; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; public class DateUtils { /** 格式化时间 */ public static String formatTime(long showTime) { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()).format(Long .valueOf(showTime)); } /** 格式化时间 */ public static String formatTime(String showTime) { return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()).format(Long .valueOf(showTime)); } /** 获取时间的毫秒数 */ public static long getMillis() throws ParseException { return System.currentTimeMillis(); } /** 获取指定时间的毫秒数,参数格式: yyyy-MM-dd HH:mm:ss,返回null代表计算失败 */ public static long getMillis(String dstr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dstr); long s1 = date.getTime(); return s1; } /** 返回 指定时间的毫秒数 减 当前日期的毫秒数;参数格式: yyyy-MM-dd HH:mm:ss,返回null代表计算失败 */ public static long getMillisDistanceNow(String dstr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dstr); long s1 = date.getTime(); long s2 = System.currentTimeMillis(); return s1 - s2; } /** 返回格式:2015-07-08 */ public static String getTodayDate() { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()); String now = sdf.format(Long.valueOf(System.currentTimeMillis())); return now; } /** 返回格式:2015-07-08 08:00:00 */ public static String getTodayTime() { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()); String now = sdf.format(Long.valueOf(System.currentTimeMillis())); return now; } /** 返回格式:2015-07-08 */ public static String getTomorrowDate() { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()); String date = sdf .format(Long.valueOf(System.currentTimeMillis() + 1 * 24 * 60 * 60 * 1000)); return date; } /** 返回格式:2015-07-08 00:00:00 */ public static String getTomorrowTime() { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()); String now = sdf.format(Long.valueOf(System.currentTimeMillis() + 1 * 24 * 60 * 60 * 1000)); long zeroHourMillis = 0; try { zeroHourMillis = getMillis(now + " " + "00:00:00"); } catch (ParseException e) { e.printStackTrace(); } sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault()); String time = sdf.format(Long.valueOf(zeroHourMillis)); return time; } /** 比较日期的大小, */ public static int compareDate(String date1, String date2) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()); Date d1 = null; Date d2 = null; try { d1 = sdf.parse(date1); d2 = sdf.parse(date2); } catch (ParseException e) { e.printStackTrace(); return -1; } return d1.compareTo(d2); } /** 比较日期与当前日期的大小, */ public static int compareDate(String dateStr) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()); String now = sdf.format(Long.valueOf(System.currentTimeMillis())); Date date = null; Date nowdate = null; try { date = sdf.parse(dateStr); nowdate = sdf.parse(now); } catch (ParseException e) { e.printStackTrace(); return -1; } return nowdate.compareTo(date); } }
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原文地址:http://my.oschina.net/u/729328/blog/485444