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最近使用Go语言在写一个数据后台系统，要求输入两个日期时间，出现按周查询的数据，网上找了找，没有发现用 Go 语言实现的博客文章，就自己写了，开始觉得很简单，写着写着发现我的方法好麻烦，算了 也写好了，如果有兴趣的小伙伴可以换另一种方法试试（我还没有试试呢）——循环所有日期 得出星期几，把周一和周日按一组分。这里只展示我已经实现的方法。

import (	"fmt"	"log"	"time")var WeekDayMap = map[string]int64{
   	"Monday":    1,	"Tuesday":   2,	"Wednesday": 3,	"Thursday":  4,	"Friday":    5,	"Saturday":  6,	"Sunday":    7,}// 获取输入的两个日期分别是星期几func GetWeekDay(startime, endtim string) (int64, int64) {
   	startday, _ := time.Parse("2006-01-02", startime)	endday, _ := time.Parse("2006-01-02", endtim)	staweek_int := startday.Weekday().String()	endweek_int := endday.Weekday().String()	return WeekDayMap[staweek_int], WeekDayMap[endweek_int]}// 字符串转时间戳func StringToTimeStamp(strTime string) int64 {
   	timeLayout := "2006-01-02"	//timeLayout := "2006-01-02 15:04:05"	loc, _ := time.LoadLocation("Local")	the_time, err := time.ParseInLocation(timeLayout, strTime, loc)	if err != nil {
   		log.Println("StringToTimeStamp出现异常：", err)	}	unix_time := the_time.Unix()	return unix_time}// 时间戳转 字符串func TimeStampToString(timeStp int64) string {
   	//转化所需模板	//timeLayout := "2006-01-02 15:04:05"	timeLayout := "2006-01-02"	//进行格式化	datetime := time.Unix(timeStp, 0).Format(timeLayout)	return datetime}// 时间转化为周日期列表func ChangeToWeek(startime, endtim string) []map[string]string {
   	staweek_int, endweek_int := GetWeekDay(startime, endtim)	// 获取时间戳	start_stamp := StringToTimeStamp(startime)	end_stamp := StringToTimeStamp(endtim)	fmt.Println("start_stamp==",start_stamp,"end_stamp==", end_stamp)	var week_list = make([]map[string]string, 0)	if (end_stamp-start_stamp)/604800 <= 1 && endweek_int-staweek_int >= 0 {
   		if end_stamp-start_stamp < 604800 && endweek_int-staweek_int > 0 {
   			one_map := map[string]string{
   }			mon_one := TimeStampToString(start_stamp - (staweek_int-1)*86400)			sun_one := TimeStampToString(start_stamp + (7-staweek_int)*86400)			one_map["mon"] = mon_one			one_map["sun"] = sun_one			week_list = append(week_list, one_map)			return week_list		}		one_map := map[string]string{
   }		mon_one := TimeStampToString(start_stamp - (staweek_int-1)*86400)		sun_one := TimeStampToString(start_stamp + (7-staweek_int)*86400)		one_map["mon"] = mon_one		one_map["sun"] = sun_one		week_list = append(week_list, one_map)		tow_map := map[string]string{
   }		mon_tow := TimeStampToString(end_stamp - (endweek_int-1)*86400)		sun_tow := TimeStampToString(end_stamp + (7-endweek_int)*86400)		tow_map["mon"] = mon_tow		tow_map["sun"] = sun_tow		week_list = append(week_list, tow_map)		return week_list	}	week_n := (end_stamp - start_stamp) / 604800	one_map := map[string]string{
   }	mon_one := TimeStampToString(start_stamp - (staweek_int-1)*86400)	sun_one := TimeStampToString(start_stamp + (7-staweek_int)*86400)	one_map["mon"] = mon_one	one_map["sun"] = sun_one	week_list = append(week_list, one_map)	for i := 1; i <= int(week_n); i++ {
   		week_map := map[string]string{
   }		mon_day := TimeStampToString(start_stamp - (staweek_int-1)*86400 + int64(i)*604800)		sun_day := TimeStampToString(start_stamp + (7-staweek_int)*86400 + int64(i)*604800)		week_map["mon"] = mon_day		week_map["sun"] = sun_day		week_list = append(week_list, week_map)	}	if endweek_int-staweek_int >= 0 {
   		return week_list	}	tow_map := map[string]string{
   }	mon_tow := TimeStampToString(end_stamp - (endweek_int-1)*86400)	sun_tow := TimeStampToString(end_stamp + (7-endweek_int)*86400)	tow_map["mon"] = mon_tow	tow_map["sun"] = sun_tow	week_list = append(week_list, tow_map)	return week_list}func main(){
   	fmt.Println(ChangeToWeek("2020-01-01","2020-01-28"))}// 结果：//start_stamp== 1577808000  end_stamp== 1580140800//[ map[mon:2019-12-30 sun:2020-01-05]//  map[mon:2020-01-06 sun:2020-01-12] //  map[mon:2020-01-13 sun:2020-01-19] //  map[mon:2020-01-20 sun:2020-01-26] //  map[mon:2020-01-27 sun:2020-02-02] ]

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