Time Formatting / Parsing {.en}

时间格式/解析 {.zh}

::: {.en} Go supports time formatting and parsing via pattern-based layouts. :::

::: {.zh}

Go支持时间格式化和解析基于模式的布局。

:::

  1. package main
  2. import "fmt"
  3. import "time"
  4. func main() {
  5.     p := fmt.Println

::: {.en} Here’s a basic example of formatting a time according to RFC3339, using the corresponding layout constant. :::

::: {.zh}

这是使用相应的layoutconstant根据RFC3339格式化时间的基本示例。

:::

  1.     t := time.Now()
  2.     p(t.Format(time.RFC3339))

::: {.en} Time parsing uses the same layout values as Format. :::

::: {.zh}

时间解析使用与“格式”相同的布局值。

:::

  1.     t1, e := time.Parse(
  2.         time.RFC3339,
  3.         "2012-11-01T22:08:41+00:00")
  4.     p(t1)

::: {.en} Format and Parse use example-based layouts. Usually you’ll use a constant from time for these layouts, but you can also supply custom layouts. Layouts must use the reference time Mon Jan 2 15:04:05 MST 2006 to show the pattern with which to format/parse a given time/string. The example time must be exactly as shown: the year 2006, 15 for the hour, Monday for the day of the week, etc. :::

::: {.zh}

Format和Parse使用基于示例的布局。通常你会对这些布局使用“时间”的常量，但你也可以提供自定义布局。布局必须使用参考时间Mon Jan 2 15:04:05 MST 2006来显示用于格式化/解析给定时间/字符串的模式。示例时间必须完全如图所示：2006,15小时，星期一，星期几等

:::

  1.     p(t.Format("3:04PM"))
  2.     p(t.Format("Mon Jan _2 15:04:05 2006"))
  3.     p(t.Format("2006-01-02T15:04:05.999999-07:00"))
  4.     form := "3 04 PM"
  5.     t2, e := time.Parse(form, "8 41 PM")
  6.     p(t2)

::: {.en} For purely numeric representations you can also use standard string formatting with the extracted components of the time value. :::

::: {.zh}

对于纯数字表示，您可以使用提取的时间值组件来标准字符串格式。

:::

  1.     fmt.Printf("%d-%02d-%02dT%02d:%02d:%02d-00:00n",
  2.         t.Year(), t.Month(), t.Day(),
  3.         t.Hour(), t.Minute(), t.Second())

::: {.en} Parse will return an error on malformed input explaining the parsing problem. :::

::: {.zh}

Parse将在错误的inputexplaining解析问题上返回错误。

:::

  1.     ansic := "Mon Jan _2 15:04:05 2006"
  2.     _, e = time.Parse(ansic, "8:41PM")
  3.     p(e)
  4. }
  1. $ go run time-formatting-parsing.go 
  2. 2014-04-15T18:00:15-07:00
  3. 2012-11-01 22:08:41 +0000 +0000
  4. 6:00PM
  5. Tue Apr 15 18:00:15 2014
  6. 2014-04-15T18:00:15.161182-07:00
  7. 0000-01-01 20:41:00 +0000 UTC
  8. 2014-04-15T18:00:15-00:00
  9. parsing time "8:41PM" as "Mon Jan _2 15:04:05 2006": ...