Time zone issues for Time.parse and Time.format in Golang

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Time zone issues for Time.parse and Time.format in Golang

posted in 2017-12-03 | classified in coding

First, the problem description

windowsunder, time.Parse() the time zone and time.Format() the time zone are consistent.

However, in an environment where the linux time.Parse() default time zone is UTC , time.Format() the time zone defaults to local, and the two will cause an error if not handled properly.

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Package main Import "Time" import "FMT" func main(){ T, err: = time. Parse ("2006-01-02 15:04:05", "2017-12-03 22:01:02") if err! = Nil{ FMT. PRINTLN (ERR) return } FMT. Println (t) FMT. Println (time. Now ()) FMT. Println (time. Now (). Sub (t). Seconds ()) }

Output:

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2017-12-03 22:01:02 +0000 UTC 2017-12-03 22:15:26.592204446 +0800 CST m=+0.003020091 -27935.407549533

It is obvious that the time zone between the two is different and that if you subtract the time, the results do not meet the expectations.

Second, the solution

Use time.ParseInLocation() instead of time.Parse() :

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Package main Import "Time" import "FMT" func main(){ localtime, err: = time. Parseinlocation ("2006-01-02 15:04:05", "2017-12-03 22:01:02", time. Local) if err! = Nil{ FMT. PRINTLN (ERR) return } FMT. Println (localtime) FMT. Println (time. Now ()) FMT. Println (time. Now (). Sub (localtime). Seconds ()) }

Results:

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2017-12-03 22:01:02 +0800 CST 2017-12-03 22:18:26.288174547 +0800 CST m=+0.001532618 1044.288357362

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1. First, the problem description
2. Second, the solution