时间通用方法

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;import org.apache.commons.lang3.time.DateFormatUtils;/**
* 日期工具类, 继承org.apache.commons.lang.time.DateUtils类
*/
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {private static String[] parsePatterns = {"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM","yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM","yyyyMMddHHmmss", "yyyyMMdd"};private static SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");private static SimpleDateFormat fmt_yyyyMMddHHmm = new SimpleDateFormat("yyyy-MM-dd HH:mm");/*** 得到当前日期字符串 格式（yyyy-MM-dd）*/public static String getDate() {return getDate("yyyy-MM-dd");}/*** 得到当前日期字符串 格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"*/public static String getDate(String pattern) {return DateFormatUtils.format(new Date(), pattern);}/*** 得到日期字符串 默认格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"*/public static String formatDate(Date date, Object... pattern) {String formatDate = null;if (pattern != null && pattern.length > 0) {formatDate = DateFormatUtils.format(date, pattern[0].toString());}else {formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");}return formatDate;}/*** 得到日期时间字符串，转换格式（yyyy-MM-dd HH:mm:ss）*/public static String formatDateTime(Date date) {return formatDate(date, "yyyy-MM-dd HH:mm:ss");}public static Date parseStrTime(String time){try {return fmt.parse(time);} catch (ParseException e) {e.printStackTrace();return null;}}public static Date parseStrTimeyyyyMMddHHmm(String time){try {return fmt_yyyyMMddHHmm.parse(time);} catch (ParseException e) {e.printStackTrace();return null;}}    /*** 得到当前时间字符串 格式（HH:mm:ss）*/public static String getTime() {return formatDate(new Date(), "HH:mm:ss");}/*** 得到当前日期和时间字符串 格式（yyyy-MM-dd HH:mm:ss）*/public static String getDateTime() {return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");}/*** 得到当前年份字符串 格式（yyyy）*/public static String getYear() {return formatDate(new Date(), "yyyy");}/*** 得到当前月份字符串 格式（MM）*/public static String getMonth() {return formatDate(new Date(), "MM");}/*** 得到当天字符串 格式（dd）*/public static String getDay() {return formatDate(new Date(), "dd");}/*** 得到当前星期字符串 格式（E）星期几*/public static String getWeek() {return formatDate(new Date(), "E");}/*** 日期型字符串转化为日期 格式* { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", * "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm",* "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm",* "yyyyMMddHHmmss", "yyyyMMdd" }*/public static Date parseDate(Object str) {if (str == null){return null;}try {return parseDate(str.toString(), parsePatterns);} catch (ParseException e) {return null;}}/*** 获取过去的天数* @param date* @return*/public static long pastDays(Date date) {long t = new Date().getTime()-date.getTime();return t/(24*60*60*1000);}/*** 获取过去的小时* @param date* @return*/public static long pastHour(Date date) {long t = new Date().getTime()-date.getTime();return t/(60*60*1000);}/*** 获取过去的分钟* @param date* @return*/public static long pastMinutes(Date date) {long t = new Date().getTime()-date.getTime();return t/(60*1000);}/*** 转换为时间（天,时:分:秒.毫秒）* @param timeMillis* @return*/public static String formatDateTime(long timeMillis){long day = timeMillis/(24*60*60*1000);long hour = (timeMillis/(60*60*1000)-day*24);long min = ((timeMillis/(60*1000))-day*24*60-hour*60);long s = (timeMillis/1000-day*24*60*60-hour*60*60-min*60);long sss = (timeMillis-day*24*60*60*1000-hour*60*60*1000-min*60*1000-s*1000);return (day>0?day+",":"")+hour+":"+min+":"+s+"."+sss;}/*** 获取两个日期之间的天数* * @param before* @param after* @return*/public static double getDistanceOfTwoDate(Date before, Date after) {long beforeTime = before.getTime();long afterTime = after.getTime();return (afterTime - beforeTime) / (1000 * 60 * 60 * 24);}public static String longToString(long currentTime){Date dateOld = new Date(currentTime);SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return sdf.format(dateOld);}/*** @param args* @throws ParseException*/public static void main(String[] args) throws ParseException {SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println(sdf.format(Long.parseLong("1463361862000")));}/*** 获取两个日期之间的小时* * @param before* @param after* @return*/public static double getDistanceOfTwoHour(Date before, Date after) {long beforeTime = before.getTime();long afterTime = after.getTime();return (afterTime - beforeTime) / (1000 * 60 * 60);}
}