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date's Introduction

Date

noogo-2020 noogo-2020

Date是一个基于time包装的一个日期包,通过此包可以快速创建日期、获取时间戳、毫秒数及最重要的日期格式化,另外你还可以继续使用time包下的所有函数(除time.Foramt(string)外)你可以通过以下方法快速创建一个Date对象:

  • Now()
  • WithTime(t time.Time)
  • WithTimestamp(timestamp int64)
  • WithMillisecond(millisecond int64)
  • WithDate(year, month, date, hour, minute, second int)

Note:你可以通过Date.Format(String,...bool)方法来对日期进行格式化,日期格式化是按照Java风格实现的,免去了Golang中非常规的格式化方法,这对我们使用日期格式化增加了很大的便利,以下问Java日期格式化参考表:

字母 日期或时间元素 表示 示例
G Era 标志符 Text AD
y Year 1996; 96
M 年中的月份 Month July; Jul; 07
w 年中的周数 Number 27
W 月份中的周数 Number 2
D 年中的天数 Number 189
d 月份中的天数 Number 10
F 月份中的星期 Number 2
E 星期中的天数 Text Tuesday; Tue v
a Am/pm 标记 Text PM
H 一天中的小时数(0-23) Number 0
k 一天中的小时数(1-24) Number 24
K am/pm 中的小时数(0-11) Number 0
h am/pm 中的小时数(1-12) Number 12
m 小时中的分钟数 Number 30
s 分钟中的秒数 Number 55
S 毫秒数 Number 978
z 时区 General time zone Pacific Standard Time; PST; GMT-08:00
Z 时区 RFC 822 time zone -0800

开始

获取Date

go get -u github.com/noogo/date

使用Date

// get date
d:=date.Now()
//d:=date.WithTime(time.Now())
//d:=date.WithTimestamp(1586448000)
//d:=date.WithMillisecond(1586448000000)
//d:=date.WithDate(2020,04,29,0,0,0)
// get milliseconds
//milliseconds:=date.Millisecond()
// get timestamp
//timestamp:=date.Timestamp()
// date format
ret,err:=d.Format("yyyy-MM-dd HH:mm:ss EEEE",true)
if err!=nil{
    log.Fatalln(err)
}
fmt.Println(ret)

运行结果

2020-04-29 00:13:12 星期三

格式化说明

  • G:保留字段,不支持格式化

  • 年:当y的连续个数小于4时则显示缩写后的年,如2008,则会格式化为08

  • 月:当M的连续个数大于3时则显示英文单词月份,如果等于3则显示英文单词缩写,否则显示数字月份,位数不足用0填充。

  • 对于表格中表示类型为Number类型的按照统一规则显示对应数值,其余多余的格式化字符用0填充,假如当前时间为2020年1月1日,08时08分08秒,那么mm格式化后的分钟则为08mmm格式化后的分钟则为008依次类推

  • 如果Date.Format(string,...bool)中第二个参数传true,代表中文模式,此参数控制am/pm及星期数,对应会被格式化为上午/下午星期一格式。

格式化参结果

令:当前日期为2008-08-18 18:28:38.888

layout result
y 08
yy 08
yyy 08
yyyy 2008
yyyyy 2008
M 08
MM 08
MMM Aug
MMMM August
MMMMM August
w 34
ww 34
www 034
wwww 0034
wwwww 00034
W 4
WW 04
WWW 004
WWWW 0004
WWWWW 00004
D 231
DD 231
DDD 231
DDDD 0231
DDDDD 00231
d 18
dd 18
ddd 018
dddd 0018
ddddd 00018
F 3
FF 03
FFF 003
FFFF 0003
FFFFF 00003
E 星期一(chinese)
EE 星期一(chinese)
EEE 星期一(chinese)
EEEE 星期一(chinese)
EEEEE 星期一(chinese)
a 下午(chinese)
aa 下午(chinese)
aaa 下午(chinese)
aaaa 下午(chinese)
aaaaa 下午(chinese)
E 1(standard)
EE 01(standard)
EEE Mon(standard)
EEEE Monday(standard)
EEEEE Monday(standard)
a PM(standard)
aa PM(standard)
aaa PM(standard)
aaaa PM(standard)
aaaaa PM(standard)
H 18
HH 18
HHH 018
HHHH 0018
HHHHH 00018
k 18
kk 18
kkk 018
kkkk 0018
kkkkk 00018
K 6
KK 06
KKK 006
KKKK 0006
KKKKK 00006
h 6
hh 06
hhh 006
hhhh 0006
hhhhh 00006
m 28
mm 28
mmm 028
mmmm 0028
mmmmm 00028
s 38
ss 38
sss 038
ssss 0038
sssss 00038
S 888
SS 888
SSS 888
SSSS 0888
SSSSS 00888
z CST
zz CST
zzz CST
zzzz CST
zzzzz CST
Z +0800
ZZ +0800
ZZZ +0800
ZZZZ +0800
ZZZZZ +0800

License

MIT License

Copyright (c) noogo-2020

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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