使用 Slick/Scala 将日期和时间存储到 MySQL

Question

我遇到了一个看起来很简单的问题，希望有一个简单的解决方案。但是我还没有找到。

我在 MySQL 中的属性是 DATE 和 TIMESTAMP 类型。这些是我的圆滑类:

case class Event (
  id: Long, name: String, category: String, date: Date, venue: String, startTime: Date, endTime: Date, description: String, admission: String, addInfo: Option[String])

class Events(tag: Tag) extends Table[Event](tag, "EVENT") {

  implicit val dateColumnType = MappedColumnType.base[Date, Long](d => d.getTime, d => new Date(d))

  def id = column[Long]("ID", O.PrimaryKey)
  def name = column[String]("NAME")
  def category = column[String]("CATEGORY")
  def date = column[Date]("DATE")
  def venue = column[String]("VENUE")
  def startTime = column[Timestamp]("START_TIME")
  def endTime = column[Timestamp]("END_TIME")
  def description = column[String]("DESCRIPTION")
  def admission = column[String]("ADMISSION")
  def addInfo = column[String]("ADD_INFO")

  def * = (id, name, category, date, venue, startTime, endTime, description, admission, addInfo.?) <> (Event.tupled, Event.unapply _)
}

出于某种原因，我无法让它工作。主要问题似乎是如何将 java.util.Date 存储到 MySQL.

中的 DATE 和 TIMESTAMP 类型中

有人可以建议如何最好地做到这一点吗？我是 Scala/Slick 世界的新手。

Answer 1

你看过了吗slick-joda-wrapper? You may also want to checkout more Scala friendly wrapper around Joda too: https://github.com/nscala-time/nscala-time

Answer 2

您想将 java.util.Date 存储到 MySQL 中的 DATE 和 TIMESTAMP 类型，因此您需要定义转换：

1) java.util.Date => java.sql.Date

2) java.util.Date => java.sql.Timestamp

class Events(tag: Tag) extends Table[Event](tag, "EVENT") {
   def id = column[Long]("ID", O.PrimaryKey)
   def name = column[String]("NAME")
   def category = column[String]("CATEGORY")
   def date = column[Date]("DATE")(DateMapper.utilDate2SqlDate)
   def venue = column[String]("VENUE")
   def startTime = column[Date]("START_TIME") (DateMapper.utilDate2SqlTimestampMapper)
   def endTime = column[Date]("END_TIME")(DateMapper.utilDate2SqlTimestampMapper)
   def description = column[String]("DESCRIPTION")
   def admission = column[String]("ADMISSION")
   def addInfo = column[Option[String]]("ADD_INFO")

   def * = (id, name, category, date, venue, startTime, endTime, description, admission, addInfo) <> (Event.tupled, Event.unapply)
}



object DateMapper {

    val utilDate2SqlTimestampMapper = MappedColumnType.base[java.util.Date, java.sql.Timestamp](
{ utilDate => new java.sql.Timestamp(utilDate.getTime()) },
{ sqlTimestamp => new java.util.Date(sqlTimestamp.getTime()) })

   val utilDate2SqlDate = MappedColumnType.base[java.util.Date, java.sql.Date](
{ utilDate => new java.sql.Date(utilDate.getTime()) },
{ sqlDate => new java.util.Date(sqlDate.getTime()) })

}

使用 Slick/Scala 将日期和时间存储到 MySQL

Storing date and time into MySQL using Slick/Scala

mysql

scala

date

slick