小编点评

Sure, here's the summary of the content you provided in a simpler format: **Original time format:** 2006-01-02 15:04:05 -0700 MST **Equivalent format used in Go 1.20:** 123456 **Reason for using this format:** * Go 1.20 uses a different time format than the common y-m-d H:M:S. * This format is specifically used in Go 1.20 and earlier versions. **Additional time formats added in Go 1.20:** * DateTime: 2006-01-02 15:04:05 * DateOnly: 2006-01-02 * TimeOnly: 15:04:05 **License:** The content is licensed under the CC BY-NC-SA 4.0 license, which permits free use, non-commercial use, and redistribution with attribution.

正文

Go语音中格式化时间不是常见的y-m-d H:M:S，而是使用2006-01-02 15:04:05 -0700 MST，也就是常说的123456。

之所以这么用，据说Go是在这个时间节点诞生的

在go 1.20之前，除了自定义时间格式外，还可以使用time包中预定义的格式：

const (
    Layout      = "01/02 03:04:05PM '06 -0700" // The reference time, in numerical order.
    ANSIC       = "Mon Jan _2 15:04:05 2006"
    UnixDate    = "Mon Jan _2 15:04:05 MST 2006"
    RubyDate    = "Mon Jan 02 15:04:05 -0700 2006"
    RFC822      = "02 Jan 06 15:04 MST"
    RFC822Z     = "02 Jan 06 15:04 -0700" // RFC822 with numeric zone
    RFC850      = "Monday, 02-Jan-06 15:04:05 MST"
    RFC1123     = "Mon, 02 Jan 2006 15:04:05 MST"
    RFC1123Z    = "Mon, 02 Jan 2006 15:04:05 -0700" // RFC1123 with numeric zone
    RFC3339     = "2006-01-02T15:04:05Z07:00"
    RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
    Kitchen     = "3:04PM"
    // Handy time stamps.
    Stamp      = "Jan _2 15:04:05"
    StampMilli = "Jan _2 15:04:05.000"
    StampMicro = "Jan _2 15:04:05.000000"
    StampNano  = "Jan _2 15:04:05.000000000"
)

在go 1.20中，除了上面预定义的格式外，新增了以下三个：

DateTime   = "2006-01-02 15:04:05"
DateOnly   = "2006-01-02"
TimeOnly   = "15:04:05"

以后可以直接使用time.Now().Format(time.DateTime)来代替之前的time.Now().Format("2006-01-02 15:04:05")。

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Author: mengbin
blog: mengbin
Github: mengbin92
cnblogs: 恋水无意

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