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接口文档：

https://godocpkg.go.orgdev/github.com/gogf/gf/v2/os/gtime

方法比较简单，比较常用的是以下几个方法：

  1. Timestamp用于获得当前时间戳，TimestampMilli、TimestampMicro及TimestampNano用于获得当前的毫秒、微秒和纳秒值。
  2. Date和Datetime用于获得当前日期及当前日期时间。
  3. SetTimeZone用于设置当前进程的全局时区。
  4. 其他方法说明请查看接口文档。

示例1，基本使用

创建时间对象及获取当前时间戳。

Code Block
languagego
package main

import (
    "fmt"
    "github.com/gogf/gf/v2/os/gtime"
)

func main() {
    fmt.Println("Date       :", gtime.Date())
    fmt.Println("Datetime   :", gtime.Datetime())
    fmt.Println("Second     :", gtime.Timestamp())
    fmt.Println("Millisecond:", gtime.TimestampMilli())
    fmt.Println("Microsecond:", gtime.TimestampMicro())
    fmt.Println("Nanosecond :", gtime.TimestampNano())
}
执行后，输出结果为：
 Code Block
languagehtml
Date       : 2018-07-22
Datetime   : 2018-07-22 11:52:22
Second     : 1532231542
Millisecond: 1532231542688
Microsecond: 1532231542688688
Nanosecond : 1532231542688690259


示例2，设置时区
package main

import (
    "fmt"
    "github.com/gogf/gf/os/gtime"
    "time"
)

func main() {
    // 先使用标准库打印当前时间
    fmt.Println(time.Now().String())
    // 设置进程全局时区
    err := gtime.SetTimeZone("Asia/Tokyo")
    if err != nil {
        panic(err)
    }
    // 使用gtime获取当前时间
    fmt.Println(gtime.Now().String())
    // 使用标准库获取当前时间
    fmt.Println(time.Now().String())
}

执行后，输出结果为：
2018-11-21 22:50:56.723429 +0800 CST m=+0.000649366
2018-11-21 23:50:56
2018-11-21 23:50:56.723832 +0900 JST m=+0.001052780

示例3，
示例2，
StrToTime
除了通过New方法外，也可以通过StrToTime根据常见的时间字符串解析生成gtime.Time对象，常见的时间字符串如下：
 Code Block
languagehtml
2017-12-14 04:51:34 +0805 LMT
2017-12-14 04:51:34 +0805 LMT
2006-01-02T15:04:05Z07:00
2014-01-17T01:19:15+08:00
2018-02-09T20:46:17.897Z
2018-02-09 20:46:17.897
2018-02-09T20:46:17Z
2018-02-09 20:46:17
2018/10/31 - 16:38:46
2018-02-09
2018.02.09

01-Nov-2018 11:50:28
01/Nov/2018 11:50:28
01.Nov.2018 11:50:28
01.Nov.2018:11:50:28
日期连接符号支持'-'、'/'、'.'


使用示例：
 Code Block
languagego
package main

import (
	"fmt"
	"github.com/gogf/gf/v2/os/glog"
	"github.com/gogf/gf/v2/os/gtime"
	"time"
)

func main() {
	array := []string{
		"2017-12-14 04:51:34 +0805 LMT",
		"2006-01-02T15:04:05Z07:00",
		"2014-01-17T01:19:15+08:00",
		"2018-02-09T20:46:17.897Z",
		"2018-02-09 20:46:17.897",
		"2018-02-09T20:46:17Z",
		"2018-02-09 20:46:17",
		"2018.02.09 20:46:17",
		"2018-02-09",
		"2017/12/14 04:51:34 +0805 LMT",
		"2018/02/09 12:00:15",
		"01/Nov/2018:13:28:13 +0800",
		"01-Nov-2018 11:50:28 +0805 LMT",
		"01-Nov-2018T15:04:05Z07:00",
		"01-Nov-2018T01:19:15+08:00",
		"01-Nov-2018 11:50:28 +0805 LMT",
		"01/Nov/2018 11:50:28",
		"01/Nov/2018:11:50:28",
		"01.Nov.2018:11:50:28",
		"01/Nov/2018",
	}
	cstLocal, _ := time.LoadLocation("Asia/Shanghai")
	for _, s := range array {
		if t, err := gtime.StrToTime(s); err == nil {
			fmt.Println(s)
			fmt.Println(t.UTC().String())
			fmt.Println(t.In(cstLocal).String())
		} else {
			glog.Error(s, err)
		}
		fmt.Println()
	}
}


在这个示例中，将部分时间格式串使用StrToTime方法转换为gtime.Time对象，并输出该事件的UTC时间和CST时间(上海时区时间)。 执行后，输出结果为：
 Code Block
languagehtml
2017-12-14 04:51:34 +0805 LMT
2017-12-13 20:46:34
2017-12-14 04:46:34 +0800 CST

2006-01-02T15:04:05Z07:00
2006-01-02 22:04:05
2006-01-03 06:04:05 +0800 CST

2014-01-17T01:19:15+08:00
2014-01-16 17:19:15
2014-01-17 01:19:15 +0800 CST

2018-02-09T20:46:17.897Z
2018-02-09 20:46:17
2018-02-10 04:46:17.897 +0800 CST

2018-02-09 20:46:17.897
2018-02-09 12:46:17
2018-02-09 20:46:17.897 +0800 CST

2018-02-09T20:46:17Z
2018-02-09 20:46:17
2018-02-10 04:46:17 +0800 CST

2018-02-09 20:46:17
2018-02-09 12:46:17
2018-02-09 20:46:17 +0800 CST

2018.02.09 20:46:17
2018-02-09 12:46:17
2018-02-09 20:46:17 +0800 CST

2018-02-09
2018-02-08 16:00:00
2018-02-09 00:00:00 +0800 CST

2017/12/14 04:51:34 +0805 LMT
2017-12-13 20:46:34
2017-12-14 04:46:34 +0800 CST

2018/02/09 12:00:15
2018-02-09 04:00:15
2018-02-09 12:00:15 +0800 CST

01/Nov/2018:13:28:13 +0800
2018-11-01 05:28:13
2018-11-01 13:28:13 +0800 CST

01-Nov-2018 11:50:28 +0805 LMT
2018-11-01 03:45:28
2018-11-01 11:45:28 +0800 CST

01-Nov-2018T15:04:05Z07:00
2018-11-01 22:04:05
2018-11-02 06:04:05 +0800 CST

01-Nov-2018T01:19:15+08:00
2018-10-31 17:19:15
2018-11-01 01:19:15 +0800 CST

01-Nov-2018 11:50:28 +0805 LMT
2018-11-01 03:45:28
2018-11-01 11:45:28 +0800 CST

01/Nov/2018 11:50:28
2018-11-01 03:50:28
2018-11-01 11:50:28 +0800 CST

01/Nov/2018:11:50:28
2018-11-01 03:50:28
2018-11-01 11:50:28 +0800 CST

01.Nov.2018:11:50:28
2018-11-01 03:50:28
2018-11-01 11:50:28 +0800 CST

01/Nov/2018
2018-10-31 16:00:00
2018-11-01 00:00:00 +0800 CST




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