golang判断当前时间是第几周的方法

发布时间：2020-05-23 17:07:41

来源：亿速云

阅读：265

作者：鸽子

Go语言中使用import关键字导入包，包的名字使用双引号("")包裹起来。

golang判断当前时间是第几周：func main() {

l, _ := time.LoadLocation("Asia/Shanghai")

startTime,_ := time.ParseInLocation("2006-01-02", "2018-12-22", l)

endTime,_ := time.ParseInLocation("2006-01-02", "2019-05-17", l)

datas := GroupByWeekDate(startTime, endTime)

for _, d := range datas {

fmt.Println(d)

}

}

//判断时间是当年的第几周

func WeekByDate(t time.Time) string {

yearDay := t.YearDay()

yearFirstDay := t.AddDate(0, 0, -yearDay+1)

firstDayInWeek := int(yearFirstDay.Weekday())

//今年第一周有几天

firstWeekDays := 1

if firstDayInWeek != 0 {

firstWeekDays = 7 - firstDayInWeek + 1

}

var week int

if yearDay <= firstWeekDays {

week = 1

} else {

week = (yearDay-firstWeekDays)/7 + 2

}

return fmt.Sprintf("%d第%d周", t.Year(), week)

}

type WeekDate struct {

WeekTh string

StartTime time.Time

EndTime time.Time

}

// 将开始时间和结束时间分割为周为单位

func GroupByWeekDate(startTime, endTime time.Time) []WeekDate {

weekDate := make([]WeekDate, 0)

diffDuration := endTime.Sub(startTime)

days := int(math.Ceil(float64(diffDuration / (time.Hour * 24))))+1

currentWeekDate := WeekDate{}

currentWeekDate.WeekTh = WeekByDate(endTime)

currentWeekDate.EndTime = endTime

currentWeekDay := int(endTime.Weekday())

if currentWeekDay == 0 {

currentWeekDay = 7

}

currentWeekDate.StartTime = endTime.AddDate(0, 0, -currentWeekDay+1)

nextWeekEndTime := currentWeekDate.StartTime

weekDate = append(weekDate, currentWeekDate)

for i := 0; i < (days-currentWeekDay)/7; i++ {

weekData := WeekDate{}

weekData.EndTime = nextWeekEndTime

weekData.StartTime = nextWeekEndTime.AddDate(0, 0, -7)

weekData.WeekTh = WeekByDate(weekData.StartTime)

nextWeekEndTime = weekData.StartTime

weekDate = append(weekDate, weekData)

}

if lastDays := (days - currentWeekDay) % 7; lastDays > 0 {

lastData := WeekDate{}

lastData.EndTime = nextWeekEndTime

lastData.StartTime = nextWeekEndTime.AddDate(0, 0, - lastDays)

lastData.WeekTh = WeekByDate(lastData.StartTime)

weekDate = append(weekDate, lastData)

}

return weekDate

}

结果：{2019第20周 2019-05-13 00:00:00 +0800 CST 2019-05-17 00:00:00 +0800 CST}

{2019第19周 2019-05-06 00:00:00 +0800 CST 2019-05-13 00:00:00 +0800 CST}

{2019第18周 2019-04-29 00:00:00 +0800 CST 2019-05-06 00:00:00 +0800 CST}

{2019第17周 2019-04-22 00:00:00 +0800 CST 2019-04-29 00:00:00 +0800 CST}

{2019第16周 2019-04-15 00:00:00 +0800 CST 2019-04-22 00:00:00 +0800 CST}

{2019第15周 2019-04-08 00:00:00 +0800 CST 2019-04-15 00:00:00 +0800 CST}

{2019第14周 2019-04-01 00:00:00 +0800 CST 2019-04-08 00:00:00 +0800 CST}

{2019第13周 2019-03-25 00:00:00 +0800 CST 2019-04-01 00:00:00 +0800 CST}

{2019第12周 2019-03-18 00:00:00 +0800 CST 2019-03-25 00:00:00 +0800 CST}

{2019第11周 2019-03-11 00:00:00 +0800 CST 2019-03-18 00:00:00 +0800 CST}

{2019第10周 2019-03-04 00:00:00 +0800 CST 2019-03-11 00:00:00 +0800 CST}

{2019第9周 2019-02-25 00:00:00 +0800 CST 2019-03-04 00:00:00 +0800 CST}

{2019第8周 2019-02-18 00:00:00 +0800 CST 2019-02-25 00:00:00 +0800 CST}

{2019第7周 2019-02-11 00:00:00 +0800 CST 2019-02-18 00:00:00 +0800 CST}

{2019第6周 2019-02-04 00:00:00 +0800 CST 2019-02-11 00:00:00 +0800 CST}

{2019第5周 2019-01-28 00:00:00 +0800 CST 2019-02-04 00:00:00 +0800 CST}

{2019第4周 2019-01-21 00:00:00 +0800 CST 2019-01-28 00:00:00 +0800 CST}

{2019第3周 2019-01-14 00:00:00 +0800 CST 2019-01-21 00:00:00 +0800 CST}

{2019第2周 2019-01-07 00:00:00 +0800 CST 2019-01-14 00:00:00 +0800 CST}

{2018第53周 2018-12-31 00:00:00 +0800 CST 2019-01-07 00:00:00 +0800 CST}

{2018第52周 2018-12-24 00:00:00 +0800 CST 2018-12-31 00:00:00 +0800 CST}

{2018第51周 2018-12-22 00:00:00 +0800 CST 2018-12-24 00:00:00 +0800 CST}