你需要使用
time.Format
显示你的
time.Time
的值与所需的精度相同。除非您修改它的值,否则它不会降低精度,您看到差异的原因只是
layout
用于呼叫
time.Format
不管你在打印什么。
当你使用
mytime.String()
,所使用的布局与任何人使用的布局都不同,否则将打印您的时间。
这就是为什么你需要使用
时间,时间
值,但操作打印方式,或将其存储为格式化字符串。
见
Go by example
// Go supports time formatting and parsing via
// pattern-based layouts.
package main
import "fmt"
import "time"
func main() {
p := fmt.Println
// Here's a basic example of formatting a time
// according to RFC3339, using the corresponding layout
// constant.
t := time.Now()
p(t.Format(time.RFC3339))
// Time parsing uses the same layout values as `Format`.
t1, e := time.Parse(
time.RFC3339,
"2012-11-01T22:08:41+00:00")
p(t1)
// `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.
p(t.Format("3:04PM"))
p(t.Format("Mon Jan _2 15:04:05 2006"))
p(t.Format("2006-01-02T15:04:05.999999-07:00"))
form := "3 04 PM"
t2, e := time.Parse(form, "8 41 PM")
p(t2)
// For purely numeric representations you can also
// use standard string formatting with the extracted
// components of the time value.
fmt.Printf("%d-%02d-%02dT%02d:%02d:%02d-00:00\n",
t.Year(), t.Month(), t.Day(),
t.Hour(), t.Minute(), t.Second())
// `Parse` will return an error on malformed input
// explaining the parsing problem.
ansic := "Mon Jan _2 15:04:05 2006"
_, e = time.Parse(ansic, "8:41PM")
p(e)
}
输出
2009-11-10T23:00:00Z
2012-11-01 22:08:41 +0000 UTC
11:00PM
Tue Nov 10 23:00:00 2009
2009-11-10T23:00:00+00:00
0000-01-01 20:41:00 +0000 UTC
2009-11-10T23:00:00-00:00
parsing time "8:41PM" as "Mon Jan _2 15:04:05 2006": cannot parse "8:41PM" as "Mon"
你自己试试看
here