我正在尝试使用这种格式yyyyMMddHHmmss格式化当前时间。
t := time.Now()
fmt.Println(t.Format("yyyyMMddHHmmss"))
这就是输出:
yyyyMMddHHmmss
有什么建议吗?
Golang中的时间包有一些方法可能值得一看。
func (Time) Format func (t Time) Format(layout string) string Format returns a textual representation of the time value formatted according to layout, which defines the format by showing how the reference time, Mon Jan 2 15:04:05 -0700 MST 2006 would be displayed if it were the value; it serves as an example of the desired output. The same display rules will then be applied to the time value. Predefined layouts ANSIC, UnixDate, RFC3339 and others describe standard and convenient representations of the reference time. For more information about the formats and the definition of the reference time, see the documentation for ANSIC and the other constants defined by this package.
源(http://golang.org/pkg/time/ Time.Format)
我还找到了一个定义布局的例子(http://golang.org/src/pkg/time/example_test.go)
func ExampleTime_Format() {
// layout shows by example how the reference time should be represented.
const layout = "Jan 2, 2006 at 3:04pm (MST)"
t := time.Date(2009, time.November, 10, 15, 0, 0, 0, time.Local)
fmt.Println(t.Format(layout))
fmt.Println(t.UTC().Format(layout))
// Output:
// Nov 10, 2009 at 3:00pm (PST)
// Nov 10, 2009 at 11:00pm (UTC)
}
Use
fmt.Println(t.Format("20060102150405"))
因为Go使用以下常量来格式化日期，请参考这里
const (
stdLongMonth = "January"
stdMonth = "Jan"
stdNumMonth = "1"
stdZeroMonth = "01"
stdLongWeekDay = "Monday"
stdWeekDay = "Mon"
stdDay = "2"
stdUnderDay = "_2"
stdZeroDay = "02"
stdHour = "15"
stdHour12 = "3"
stdZeroHour12 = "03"
stdMinute = "4"
stdZeroMinute = "04"
stdSecond = "5"
stdZeroSecond = "05"
stdLongYear = "2006"
stdYear = "06"
stdPM = "PM"
stdpm = "pm"
stdTZ = "MST"
stdISO8601TZ = "Z0700" // prints Z for UTC
stdISO8601ColonTZ = "Z07:00" // prints Z for UTC
stdNumTZ = "-0700" // always numeric
stdNumShortTZ = "-07" // always numeric
stdNumColonTZ = "-07:00" // always numeric
stdFracSecond0 = ".0", ".00" // trailing zeros included
stdFracSecond9 = ".9", ".99" // trailing zeros omitted
)
当你找到“golang当前时间格式”时，这个问题会出现在谷歌搜索的顶部，所以，对于所有想要使用其他格式的人，请记住，你总是可以调用:
t := time.Now()
t.Year()
t.Month()
t.Day()
t.Hour()
t.Minute()
t.Second()
例如，要获得当前日期时间为“YYYY-MM-DDTHH:MM:SS”(例如2019-01-22T12:40:55)，您可以对fmt使用这些方法。Sprintf:
t := time.Now()
formatted := fmt.Sprintf("%d-%02d-%02dT%02d:%02d:%02d",
t.Year(), t.Month(), t.Day(),
t.Hour(), t.Minute(), t.Second())
一如既往，请记住文档是最好的学习来源:https://golang.org/pkg/time/
import("time")
layout := "2006-01-02T15:04:05.000Z"
str := "2014-11-12T11:45:26.371Z"
t, err := time.Parse(layout, str)
if err != nil {
fmt.Println(err)
}
fmt.Println(t)
给:
>> 2014-11-12 11:45:26.371 +0000 UTC
选项1:使用标准库
t.Format("20060102150405")
| Unit | Golang Layout | Examples | Note |
|---|---|---|---|
| Year | 06 | 21, 81, 01 | |
| Year | 2006 | 2021, 1981, 0001 | |
| Month | January | January, February, December | |
| Month | Jan | Jan, Feb, Dec | |
| Month | 1 | 1, 2, 12 | |
| Month | 01 | 01, 02, 12 | |
| Day | Monday | Monday, Wednesday, Sunday | |
| Day | Mon | Mon, Wed, Sun | |
| Day | 2 | 1, 2, 11, 31 | |
| Day | 02 | 01, 02, 11, 31 | zero padded day of the month |
| Day | _2 | ⎵1, ⎵2, 11, 31 | space padded day of the month |
| Day | 002 | 001, 002, 011, 031, 145, 365, 366 | zero padded day of the year |
| Day | __2 | ⎵⎵1, ⎵⎵2, ⎵11, ⎵31, 365, 366 | space padded day of the year |
| Part of day | PM | AM, PM | |
| Part of day | pm | am, pm | |
| Hour 24h | 15 | 00, 01, 12, 23 | |
| Hour 12h | 3 | 1, 2, 12 | |
| Hour 12h | 03 | 01, 02, 12 | |
| Minute | 4 | 0, 4 ,10, 35 | |
| Minute | 04 | 00, 04 ,10, 35 | |
| Second | 5 | 0, 5, 25 | |
| Second | 05 | 00, 05, 25 | |
| 10-1 to 10-9 s | .0 .000000000 | .1, .199000000 | Trailing zeros included |
| 10-1 to 10-9 s | .9 .999999999 | .1, .199 | Trailing zeros omitted |
| Time zone | MST | UTC, MST, CET | |
| Time zone | Z07 | Z, +08, -05 | Z is for UTC |
| Time zone | Z0700 | Z, +0800, -0500 | Z is for UTC |
| Time zone | Z070000 | Z, +080000, -050000 | Z is for UTC |
| Time zone | Z07:00 | Z, +08:00, -05:00 | Z is for UTC |
| Time zone | Z07:00:00 | Z, +08:00:00, -05:00:00 | Z is for UTC |
| Time zone | -07 | +00, +08, -05 | |
| Time zone | -0700 | +0000, +0800, -0500 | |
| Time zone | -070000 | +000000, +080000, -050000 | |
| Time zone | -07:00 | +00:00, +08:00, -05:00 | |
| Time zone | -07:00:00 | +00:00:00, +08:00:00, -05:00:00 |
在Golang 1.17+的分数秒(。999或。000)你可以使用，而不是。(，999或，000)但输出始终与。!!参见https://github.com/golang/go/issues/48037
选项2:strftime Go实现
import strftime "github.com/itchyny/timefmt-go"
strftime.Format(t, "%Y%m%d%H%M%S")
查看更多信息
https://github.com/itchyny/timefmt-go
https://linux.die.net/man/3/strftime
去标准库:时间
now := time.Now()
fmt.Println(now) // 2009-11-10 23:00:00 +0000 UTC m=+0.000000001
fmt.Println(now.Format("20060102150405"))
fmt.Println(now.Format("2006/01/02/15/04/05"))
fmt.Println(now.Format("2006-01-02 15:04:05"))
fmt.Println(now.Format("2006-01-02 15:04"))
fmt.Println(now.Format("2006/01/02 15:04:05"))
fmt.Println(now.Format("2006/01/02 15:04:05 (-0700)"))
fmt.Println(now.Format("2006年01月02日 15:04"))
fmt.Println(now.Format(time.Layout)) // 01/02 03:04:05PM '06 -0700
fmt.Println(now.Format(time.ANSIC)) // Mon Jan _2 15:04:05 2006
fmt.Println(now.Format(time.UnixDate)) // Mon Jan _2 15:04:05 MST 2006
fmt.Println(now.Format(time.RubyDate)) // Mon Jan 02 15:04:05 -0700 2006
fmt.Println(now.Format(time.RFC822)) // 02 Jan 06 15:04 MST
fmt.Println(now.Format(time.RFC850)) // Monday, 02-Jan-06 15:04:05 MST
fmt.Println(now.Format(time.Kitchen)) // 3:04PM
fmt.Println(now.Format(time.Stamp)) // Jan _2 15:04:05
去操场
