time.Weekday类型可以做运算,强制转int,会得到偏差数。
默认是 Sunday 开始到 Saturday 算 0,1,2,3,4,5,6
所以只有Monday减去Sunday的时候是正数,特殊处理下就可以了。
/**
获取本周周一的日期
*/
func GetFirstDateOfWeek() (weekMonday string) {
now := time.Now()
offset := int(time.Monday - now.Weekday())
if offset > 0 {
offset = -6
}
weekStartDate := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.Local).AddDate(0, 0, offset)
weekMonday = weekStartDate.Format("2006-01-02")
return
}
/**
获取上周的周一日期
*/
func GetLastWeekFirstDate() (weekMonday string) {
thisWeekMonday := GetFirstDateOfWeek()
TimeMonday, _ := time.Parse("2006-01-02", thisWeekMonday)
lastWeekMonday := TimeMonday.AddDate(0, 0, -7)
weekMonday = lastWeekMonday.Format("2006-01-02")
return
}