java - 收到错误“java.time.temporal.UnsupportedTemporalTypeException：不支持的字段：DayOfWeek”

Question

我用过这个，但我不知道为什么在尝试以“MMM，YYYY”格式提取当前月份时出现此错误”

val thisMonth = YearMonth.now()
val lastMonth = thisMonth.minusMonths(1)
val last12thMonth = thisMonth.minusMonths(12)

val monthYearFormatter: DateTimeFormatter = DateTimeFormatter.ofPattern("MMM,YYYY")
val lastMonthinWords = lastMonth.format(monthYearFormatter)
Reporter.log("Last month is "+lastMonthinWords)

标签： javascalaselenium