工具方法

https://godoc.org/github.com/gogf/gf/os/gtime

方法比较简单，比较常用的是以下几个方法;

  1. Second用于获得当前时间戳，Millisecond、Microsecond及Nanosecond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

  1. package main
  3. import (
  4.     "fmt"
  5.     "github.com/gogf/gf/os/gtime"
  6. )
  8. func main() {
  9.     fmt.Println("Date       :", gtime.Date())
  10.     fmt.Println("Datetime   :", gtime.Datetime())
  11.     fmt.Println("Second     :", gtime.Timestamp())
  12.     fmt.Println("Millisecond:", gtime.Millisecond())
  13.     fmt.Println("Microsecond:", gtime.Microsecond())
  14.     fmt.Println("Nanosecond :", gtime.Nanosecond())
  15. }

执行后，输出结果为：

  1. Date       : 2018-07-22
  2. Datetime   : 2018-07-22 11:52:22
  3. Second     : 1532231542
  4. Millisecond: 1532231542688
  5. Microsecond: 1532231542688688
  6. Nanosecond : 1532231542688690259

示例2，设置时区

  1. package main
  3. import (
  4.     "fmt"
  5.     "github.com/gogf/gf/os/gtime"
  6.     "time"
  7. )
  9. func main() {
  10.     // 先使用标准库打印当前时间
  11.     fmt.Println(time.Now().String())
  12.     // 设置进程全局时区
  13.     err := gtime.SetTimeZone("Asia/Tokyo")
  14.     if err != nil {
  15.         panic(err)
  16.     }
  17.     // 使用gtime获取当前时间
  18.     fmt.Println(gtime.Now().String())
  19.     // 使用标准库获取当前时间
  20.     fmt.Println(time.Now().String())
  21. }

执行后，输出结果为：

  1. 2018-11-21 22:50:56.723429 +0800 CST m=+0.000649366
  2. 2018-11-21 23:50:56
  3. 2018-11-21 23:50:56.723832 +0900 JST m=+0.001052780

示例3，StrToTime

gtime支持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：

  1. "2017-12-14 04:51:34 +0805 LMT",
  2. "2017-12-14 04:51:34 +0805 LMT",
  3. "2006-01-02T15:04:05Z07:00",
  4. "2014-01-17T01:19:15+08:00",
  5. "2018-02-09T20:46:17.897Z",
  6. "2018-02-09 20:46:17.897",
  7. "2018-02-09T20:46:17Z",
  8. "2018-02-09 20:46:17",
  9. "2018/10/31 - 16:38:46"
  10. "2018-02-09",
  11. "2018.02.09",
  13. 01-Nov-2018 11:50:28
  14. 01/Nov/2018 11:50:28
  15. 01.Nov.2018 11:50:28
  16. 01.Nov.2018:11:50:28
  17. 日期连接符号支持'-'、'/'、'.'

使用示例：

package main

import (
    "fmt"
    "github.com/gogf/gf/os/glog"
    "github.com/gogf/gf/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：

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