英文:
golang RFC2822 conversion
问题
在包含的库中是否有一个将RFC时间戳转换为Unix时间（或其他格式，然后可以将其格式化为Unix时间）的库或函数？
例如，我想将Tue Sep 16 21:58:58 +0000 2014转换为Unix时间戳。
英文:
Is there a library or function in the included libraries that converts an RFC timestamp to Unix time (or another format that I can then format into Unix time?)
For example, I'd like to change this Tue Sep 16 21:58:58 +0000 2014 to a Unix timestamp.
答案1
得分: 7
例如，
package main
import (
"fmt"
"time"
)
func main() {
s := "Tue Sep 16 21:58:58 +0000 2014"
const rfc2822 = "Mon Jan 02 15:04:05 -0700 2006"
t, err := time.Parse(rfc2822, s)
if err != nil {
fmt.Println(err)
return
}
u := t.Unix()
fmt.Println(u)
f := t.Format(time.UnixDate)
fmt.Println(f)
}
输出：
1410904738
Tue Sep 16 21:58:58 +0000 2014
参考资料：
注意：
有一个名为time的包中的格式常量名为RubyDate，这是一个误导。
Go的作者被Go Issue 518误导，该问题声称Ruby的Time.now输出为Tue Jan 12 02:52:59 -0800 2010。然而，
#!/usr/bin/env ruby
print Time.now
print "\n"
输出：
2014-09-20 19:40:32 -0400
后来，该问题被修改为Tue Jan 12 02:52:59 -0800 2010是Twitter API使用的日期格式。在最初的“Fail Whale”时期，Twitter使用的是Ruby-on-Rails，这可能是他们认为这是Ruby日期格式的原因。
我在示例中没有使用time.RubyDate常量，因为它会产生误导。一个名为rfc2822的常量提供了更好的文档。
参考资料：
Go: Issue 518: time.Parse - numeric time zones and spacing
英文:
For example,
package main
import (
"fmt"
"time"
)
func main() {
s := "Tue Sep 16 21:58:58 +0000 2014"
const rfc2822 = "Mon Jan 02 15:04:05 -0700 2006"
t, err := time.Parse(rfc2822, s)
if err != nil {
fmt.Println(err)
return
}
u := t.Unix()
fmt.Println(u)
f := t.Format(time.UnixDate)
fmt.Println(f)
}
Output:
1410904738
Tue Sep 16 21:58:58 +0000 2014
References:
RFC2822: 3.3. Date and Time Specification
NOTE:
There is a package time format constant named RubyDate; it's a misnomer.
The Go authors were misled by Go Issue 518 which claimed that Ruby Time.now outputs Tue Jan 12 02:52:59 -0800 2010. However,
#!/usr/bin/env ruby
print Time.now
print "\n"
Output:
2014-09-20 19:40:32 -0400
Later, the issue was revised to say that Tue Jan 12 02:52:59 -0800 2010 was the date format used by the Twitter API. In the beginning, in the "Fail Whale" days, Twitter used Ruby-on-Rails, which may be why they assumed it was a Ruby date format.
I didn't use the time.RubyDate constant in my example since it's misleading. A constant named rfc2822 provides better documentation.
References:
Go: Issue 518: time.Parse - numeric time zones and spacing
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