def NowDate(): String = {
    val now: Date = new Date()
    val dateFormat: SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
    val date = dateFormat.format(now)
    return date
  }

   
 executeUpdate("UPDATE message SET send_state=?,send_time=? WHERE message_id=?" , (stmt)=>{
      stmt.setInt(1,2)
      stmt.setString(2,NowDate())
      stmt.setInt(3,messageId)
    })

executeUpdate("UPDATE message SET send_state=?,send_time=NOW() WHERE message_id=?" , (stmt)=>{
      stmt.setInt(1,2)
      stmt.setInt(2,messageId)
    })

这里NOW() 和 NowDate() 效果一样