英文:
GoLang parsing time.Now() sans timezone?
问题
我在程序中有以下代码，目标是确保在特定时间范围内可以访问某个项目。但出现了一个问题，结果始终为false。我已经记录了开始时间、结束时间和当前时间。开始和结束日期通过JSON请求传入，没有时区信息。而time.Now()函数返回的是带有时区信息的时间。这可能是问题所在吗？我该如何解决？
func withinStartAndEnd(item Item) bool {
fmt.Println("Start Date", item.Start_date, "\n")
fmt.Println("End Date", item.End_date, "\n")
fmt.Println("Now:", time.Now(), "\n")
//BUG: For some reason event 0's are still not accessible within the timeframe. The fmt's above are to help look at it. time.Now() is printing MST.. maybe that's it?
/*
Start Date 2016-02-19 09:50:00 +0000 +0000
End Date 2016-02-19 10:00:00 +0000 +0000
Now: 2016-02-19 09:59:48.73003196 -0700 MST
2016/02/19 09:59:48 Item not accessible (#148)
*/
return item.Start_date.Before(time.Now()) && item.End_date.After(time.Now())
}
英文:
I have the following code in a program and the goal is to make sure an item is accessible within a timeframe. For some reason, this is coming in as false. I've logged the start, end, and now times.The start/end dates are coming in through a JSON request, with no timezone. The time.Now() is giving a timezone. Is that where I'm having my issue? How would I fix it?
func withinStartAndEnd(item Item) bool {
fmt.Println("Start Date", item.Start_date, "\n")
fmt.Println("End Date", item.End_date, "\n")
fmt.Println("Now:", time.Now(), "\n")
//BUG: For some reason event 0's are still not accessible within the timeframe. The fmt's above are to help look at it. time.Now() is printing MST.. maybe that's it?
/*
Start Date 2016-02-19 09:50:00 +0000 +0000
End Date 2016-02-19 10:00:00 +0000 +0000
Now: 2016-02-19 09:59:48.73003196 -0700 MST
2016/02/19 09:59:48 Item not accessible (#148)
*/
return item.Start_date.Before(time.Now()) && item.End_date.After(time.Now())
}
答案1
得分: 1
如果确实没有时区信息，那么可以使用协调世界时（Coordinated Universal Time，UTC）。
now := time.Now().UTC()
目标是将所有时间转换为UTC时间。也许，由于数据库时间实际上是MST（Mountain Standard Time）：
// 数据库时区为Mountain Time
dbt, err := time.LoadLocation("America/Denver")
if err != nil {
fmt.Println(err)
return
}
now := time.Now().UTC()
start := item.Start_date.In(dbt).UTC()
end := item.End_date.In(dbt).UTC()
英文:
If there really is no time zone, then use UTC, the Coordinated Universal Time.
now := time.Now().UTC()
The goal is to get everything to UTC time. Perhaps, since DB time is actually MST,
// database time zone is Mountain Time
dbt, err := time.LoadLocation("America/Denver")
if err != nil {
fmt.Println(err)
return
}
now := time.Now().UTC()
start := item.Start_date.In(dbt).UTC()
end := item.End_date.In(dbt).UTC()
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