【转】scala 时间、时间戳系列操作

格式说明：
Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996; 96
Y Week year Year 2009; 09
M Month in year Month July; Jul; 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day name in week Text Tuesday; Tue
u Day number of week (1 = Monday, ..., 7 = Sunday) Number 1
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time; PST; GMT-08:00
Z Time zone RFC 822 time zone -0800
X Time zone ISO 8601 time zone -08; -0800; -08:00
格式示例：
Date and Time Pattern Result
"yyyy.MM.dd G 'at' HH:mm:ss z" 2001.07.04 AD at 12:08:56 PDT
"EEE, MMM d, ''yy" Wed, Jul 4, '01
"h:mm a" 12:08 PM
"hh 'o''clock' a, zzzz" 12 o'clock PM, Pacific Daylight Time
"K:mm a, z" 0:08 PM, PDT
"yyyyy.MMMMM.dd GGG hh:mm aaa" 02001.July.04 AD 12:08 PM
"EEE, d MMM yyyy HH:mm:ss Z" Wed, 4 Jul 2001 12:08:56 -0700
"yyMMddHHmmssZ" 010704120856-0700
"yyyy-MM-dd'T'HH:mm:ss.SSSZ" 2001-07-04T12:08:56.235-0700
"yyyy-MM-dd'T'HH:mm:ss.SSSXXX" 2001-07-04T12:08:56.235-07:00
"YYYY-'W'ww-u" 2001-W27-3
"自由输入YYYY-'爱你哦'ww-u自由输入" 自由输入2001-爱你哦27-3自由输入

import java.text.SimpleDateFormat
import java.util.{Calendar, Date}
 
/**
      * 获取当前时间
      *
      * @param pattern pattern 如"yyyyMMddHHmmss"
      * @return
      */
    def getrealTime(pattern: String): String = {
        val timeTag = System.currentTimeMillis()
        val changeTime = new Date(timeTag)
        val dataFormat = new SimpleDateFormat(pattern)
        dataFormat.format(changeTime)
    }
 
/**
      * 获取当前时间戳（精确到毫秒）
      *
      * @return
      */
    def getTimestamp(): Long = {
        val time = Util.getrealTime("yyyyMMddHHmmss")
        Util.funStringToTimeStamp(time, "yyyyMMddHHmmss")
    }
 
 
 
 
    /**
      * 将时间字符串修改为时间戳
      *
      * @param time          时间
      * @param timeFormatted 时间格式 如 "yyyyMMddHHmmss"
      * @return 精确到毫秒的时间戳
      */
    def funStringToTimeStamp(time: String, timeFormatted: String): Long = {
        val fm = new SimpleDateFormat(timeFormatted)
        val dt = fm.parse(time)
        dt.getTime
    }
 
    /**
      * 将时间戳转换为时间
      *
      * @param timestamp     精确到毫秒
      * @param timeFormatted 时间格式如“HH”表示按24小时制返回时间戳对应的小时
      * @return
      */
    def timestampToString(timestamp: String, timeFormatted: String): String = {
        val fm = new SimpleDateFormat(timeFormatted)
        val time = fm.format(new Date(timestamp.toLong))
        time
    }
 /**
      * 获取传入日期与当前日期的天数差
      *
      * @param day          待比较日期(仅包含月日)
      * @param dayFormatted 待比较日期格式(例如:MMdd或MM-dd)
      * @return
      */
    def daysBetweenToday(day: String, dayFormatted: String): Int = {
        val calendar = Calendar.getInstance
        calendar.setTime(new Date())
        val today = calendar.get(Calendar.DAY_OF_YEAR)
        val year = calendar.get(Calendar.YEAR)
        val inputF = new SimpleDateFormat("yyyy" + dayFormatted)
        val date = inputF.parse(year + day)
        calendar.setTime(date)
        val inputDay = calendar.get(Calendar.DAY_OF_YEAR)
        var days = today - inputDay
        if (days < 0) {
            val beforeYearDate = inputF.parse((year - 1) + day)
            calendar.setTime(beforeYearDate)
            days = calendar.getActualMaximum(Calendar.DAY_OF_YEAR) - calendar.get(Calendar.DAY_OF_YEAR) + today
        }
        return days
    }
 
/**
      * 将毫秒级时间戳转化成分钟级时间戳
      *
      * @param time 毫秒级时间戳
      * @return 分钟级时间戳
      */
    def getMinTimestamp(time: Long): Long = {
        val minTime = time / (1000 * 60)
        minTime
    }
 
  /**
      * 将时间字符串修改为格式
      *
      * @param inpuTime        输入时间
      * @param inputFormatted  输入时间格式
      * @param outputFormatted 输出时间格式
      * @return
      */
    def formatTime(inpuTime: String, inputFormatted: String, outputFormatted: String): String = {
        val inputF = new SimpleDateFormat(inputFormatted)
        val outputF = new SimpleDateFormat(outputFormatted)
        val inputT = inputF.parse(inpuTime)
        outputF.format(inputT)
    }
 
 
/**
      * 获取传入时间戳的天数差
      *
      * @param t1 较小时间戳
      * @param t2 较大时间戳
      * @return
      */
    def caculate2Days(t1: Long, t2: Long): Int = {
        import java.util.Calendar
        val calendar = Calendar.getInstance
        calendar.setTimeInMillis(t2)
        val t2Day = calendar.get(Calendar.DAY_OF_YEAR)
        calendar.setTimeInMillis(t1)
        val t1Day = calendar.get(Calendar.DAY_OF_YEAR)
        var days = t2Day - t1Day
        if (days < 0) {
            days = calendar.getActualMaximum(Calendar.DAY_OF_YEAR) - t1Day + t2Day
        }
        return days;
    }
 
    /**
      * 判断nowTime是否在startTime与endTime之间
      * @param nowTime
      * @param startTime
      * @param endTime
      * @param formater
      * @return
      */
    def isBetweenDate(nowTime: String, startTime: String, endTime: String, formater: String): Boolean = {
        val df = new SimpleDateFormat(formater)
        val nowDate = df.parse(nowTime)
        val startDate = df.parse(startTime)
        val endDate = df.parse(endTime)
        if ((nowDate.getTime == startDate.getTime) || (nowDate.getTime == endDate.getTime)) return true
        if (nowDate.after(startDate) && nowDate.before(endDate)) {
            true
        } else {
            false
        }
    }
 
     
 
 
 /**
      * 时间增加天数，返回时间
      *
      * @param date 入参时间
      * @param num  增加的天数
      * @return
      */
    def funAddDate(date: String, num: Int): String = {
        val myformat = new SimpleDateFormat("yyyyMMdd")
        var dnow = new Date()
        dnow = myformat.parse(date)
        val cal = Calendar.getInstance()
        cal.setTime(dnow)
        cal.add(Calendar.DAY_OF_MONTH, num)
        val newday = cal.getTime
        myformat.format(newday)
    }
 
    /**
      * 时间增加小时，返回时间
      *
      * @param date 入参时间
      * @param num  增加的天数
      * @return
      */
    def funAddHour(date: String, num: Int): String = {
        val myformat = new SimpleDateFormat("yyyyMMddHH")
        var dnow = new Date()
        dnow = myformat.parse(date)
        val cal = Calendar.getInstance()
        cal.setTime(dnow)
        cal.add(Calendar.HOUR, num)
        val newday = cal.getTime
        myformat.format(newday)
    }
 
/**
      * 时间增加分钟，返回时间
      *
      * @param date 入参时间
      * @param num  增加的分钟数
      * @return
      */
    def funAddMinute(date: String, num: Int): String = {
        val myformat = new SimpleDateFormat("yyyyMMddHHmm")
        var dnow = new Date()
        dnow = myformat.parse(date)
        val cal = Calendar.getInstance()
        cal.setTime(dnow)
        cal.add(Calendar.MINUTE, num)
        val newday = cal.getTime
        myformat.format(newday)
    }
 /**
      * 时间增加秒，返回时间
      *
      * @param date 入参时间
      * @param num  增加的秒数
      * @return
      */
    def funAddSecond(date: String, num: Int, format: String): String = {
        val myformat = new SimpleDateFormat(format)
        var dnow = new Date()
        dnow = myformat.parse(date)
        val cal = Calendar.getInstance()
        cal.setTime(dnow)
        cal.add(Calendar.SECOND, num)
        val newday = cal.getTime
        myformat.format(newday)
    }
 
 
    /** 获取过去几天的时间数组
      *
      * @param date
      * @param num
      * @return
      */
    def getPastDays(date: String, num: Int): Array[String] = {
        val buffer = new ArrayBuffer[String]()
        val range = 0 until num
        for(i <- range){
            buffer.append(funAddDate(date,-i))
        }
        buffer.toArray
    }
 
    /** 获取过去几小时的时间数组
      *
      * @param date
      * @param num
      * @return
      */
    def getPastHours(date: String, num: Int, interval:Int): Array[String] = {
        val buffer = new ArrayBuffer[String]()
        val range = 0 until num
        for(i <- range){
            buffer.append(funAddHour(date,-i*interval))
        }
        buffer.toArray
    }