Promacanthus

     const shortForm = "2006-01-02"
    parse, err := time.Parse(shortForm, tmp)

这里的shortForm的内容不能任意定义，Golang中这些数字都是有特殊函义的，见下面列表：

单位	可选值
月份	1,01,Jan,January
日	2,02,_2
时	3,03,15,PM,pm,AM,am
分	4,04
秒	5,05
年	06,2006
周几	Mon,Monday
时区时差表示	-07,-0700,Z0700,Z07:00,-07:00,MST
时区字母缩写	MST

看一看time包中定义的常量，就能理解啦，这些是预定义的布局，用于Time.Format和time.Parse。布局中使用的参考时间是特定时间：Mon Jan 2 15:04:05 MST 2006，换成Unix时间是1136239445

 const (
    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"
)

	const shortForm = "2006-01-02"
	parse, err := time.Parse(shortForm, tmp)

	const (
	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"
	)

06 string2time