scala日期工具

最新推荐文章于 2024-09-19 11:08:14 发布

genhaoyou

最新推荐文章于 2024-09-19 11:08:14 发布

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本文链接：https://blog.youkuaiyun.com/genhaoyou/article/details/92970462

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本文详细介绍了Scala中处理日期的工具和方法，包括日期的创建、格式化、比较和操作等核心概念，帮助开发者更好地在Scala项目中管理时间数据。

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object DateUtil {

  def strDateFormat(strDate: String, inputFormat : String, outputFormat: String): String = {
    val input = new SimpleDateFormat(inputFormat)
    val output = new SimpleDateFormat(outputFormat)
    val date = input.parse(strDate)
    val strFormatedDate = output.format(date)
    return strFormatedDate
  }

  def dateAdd(strDate: String, addType: Int, addNum: Int, format: String): String = {
    val dateFormat = new SimpleDateFormat(format)
    val date = dateFormat.parse(strDate)
    val calendar = Calendar.getInstance()
    calendar.setTime(date)
    calendar.add(addType, addNum)
    val strFormatedDate = dateFormat.format(calendar.getTime())
    return strFormatedDate
  }


  def dateAdd(date: Date, addType: Int, addNum: Int, format: String): String = {
    val calendar = Calendar.getInstance()
    calendar.setTime(date)
    calendar.add(addType, addNum)
    val dateFormat = new SimpleDateFormat(format)
    val strFormatedDate = dateFormat.format(calendar.getTime())
    return strFormatedDate
  }

  def dateAdd(date: Date, addType: Int, addNum: Int): Date = {
    val calendar = Calendar.getInstance()
    calendar.setTime(date)
    calendar.add(addType, addNum)
    val dateTime = calendar.getTime()
    return dateTime
  }

  def toDate(strDate: String, format: String): Date = {
    val dateFormat = new SimpleDateFormat(format)
    val date = dateFormat.parse(strDate)
    return date
  }

  def toDateString(date: Date, format: String): String = {
    val dateFormat = new SimpleDateFormat(format)
    val strDate = dateFormat.format(date)
    return strDate
  }

  def toDateString(longDate: Long, format: String): String = {
    val dateFormat = new SimpleDateFormat(format)
    val strDate = dateFormat.format(longDate*1000)
    return strDate
  }

应用;

val line_require_date = args(0)
val status = args(1)
val end_symbol="$"
val yesterday = DateUtil.dateAdd(new Date(), Calendar.DAY_OF_YEAR, -1, "yyyyMMdd")
val line_require_date2 = DateUtil.strDateFormat(line_require_date, "yyyyMMdd", "yyyy-MM-dd")
val trans_start_inc = DateUtil.dateAdd(line_require_date, Calendar.DAY_OF_YEAR, -2, "yyyyMMdd")
val trans_end_inc = DateUtil.dateAdd(line_require_date, Calendar.DAY_OF_YEAR, 4, "yyyyMMdd")
val trans_start_dt = DateUtil.strDateFormat(trans_start_inc, "yyyyMMdd", "yyyy-MM-dd")
val trans_end_dt = DateUtil.strDateFormat(trans_end_inc, "yyyyMMdd", "yyyy-MM-dd")