def getSeason(dateTime: DateTime): Int = {
    (dateTime.getMonthOfYear - 1) / 3 + 1
  }
import org.joda.time.DateTime
val dayS2="2019-03-02" 
val des_file_day=DateTime.parse(dayS2).toString("yyyy-MM-dd-'Q%d'-'W'yyyyww").format(getSeason(DateTime.parse(dayS2)))
//2019-03-02-Q1-W201909  对的，默认解析的是yyyy-MM-dd

val dayS3="20190302" 
 val des_file_day3=DateTime.parse(dayS3).toString("yyyy-MM-dd-'Q%d'-'W'yyyyww").format(getSeason(DateTime.parse(dayS3)))
//20190302-01-01-Q1-W2019030201  错误

import org.joda.time.format.DateTimeFormat
val des_file_day4=DateTime.parse(dayS3,DateTimeFormat.forPattern("yyyyMMdd")).toString("yyyy-MM-dd-'Q%d'-'W'yyyyww").format(getSeason(DateTime.parse(dayS3,DateTimeFormat.forPattern("yyyyMMdd"))))
//2019-03-02-Q1-W201909   对的