GoLang 时间相关的方法

golang 评论

间隔指定时间运行

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package main

import (
	"fmt"
	"time"
)

func main() {
	// 每隔一秒执行一次
	tick := time.Tick(time.Second)
	for range tick {
		fmt.Print(".")
	}
}

时间格式化

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package main

import (
	"fmt"
	"time"
)

func main() {

	currentTime := time.Now()
	fmt.Println("当前时间  : ", currentTime)
	fmt.Println("当前时间字符串: ", currentTime.String())
	fmt.Println("MM-DD-YYYY : ", currentTime.Format("01-02-2006"))
	fmt.Println("YYYY-MM-DD : ", currentTime.Format("2006-01-02"))
	fmt.Println("YYYY.MM.DD : ", currentTime.Format("2006.01.02 15:04:05"))
	fmt.Println("YYYY#MM#DD {Special Character} : ", currentTime.Format("2006#01#02"))
	fmt.Println("YYYY-MM-DD hh:mm:ss : ", currentTime.Format("2006-01-02 15:04:05"))
	fmt.Println("Time with MicroSeconds: ", currentTime.Format("2006-01-02 15:04:05.000000"))
	fmt.Println("Time with NanoSeconds: ", currentTime.Format("2006-01-02 15:04:05.000000000"))
	fmt.Println("ShortNum Month : ", currentTime.Format("2006-1-02"))
	fmt.Println("LongMonth : ", currentTime.Format("2006-January-02"))
	fmt.Println("ShortMonth : ", currentTime.Format("2006-Jan-02"))
	fmt.Println("ShortYear : ", currentTime.Format("06-Jan-02"))
	fmt.Println("LongWeekDay : ", currentTime.Format("2006-01-02 15:04:05 Monday"))
	fmt.Println("ShortWeek Day : ", currentTime.Format("2006-01-02 Mon"))
	fmt.Println("ShortDay : ", currentTime.Format("Mon 2006-01-2"))
	fmt.Println("Short Hour Minute Second: ", currentTime.Format("2006-01-02 3:4:5"))
	fmt.Println("Short Hour Minute Second: ", currentTime.Format("2006-01-02 3:4:5 PM"))
	fmt.Println("Short Hour Minute Second: ", currentTime.Format("2006-01-02 3:4:5 pm"))
}

时间加减

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func main() {
	// Add 时间相加
	now := time.Now()
	// ParseDuration parses a duration string.
	// A duration string is a possibly signed sequence of decimal numbers,
	// each with optional fraction and a unit suffix,
	// such as "300ms", "-1.5h" or "2h45m".
	//  Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
	// 10分钟前
	m, _ := time.ParseDuration("-1m")
	m1 := now.Add(m)
	fmt.Println(m1)

	// 8个小时前
	h, _ := time.ParseDuration("-1h")
	h1 := now.Add(8 * h)
	fmt.Println(h1)

	// 一天前
	d, _ := time.ParseDuration("-24h")
	d1 := now.Add(d)
	fmt.Println(d1)

	printSplit(50)

	// 10分钟后
	mm, _ := time.ParseDuration("1m")
	mm1 := now.Add(mm)
	fmt.Println(mm1)

	// 8小时后
	hh, _ := time.ParseDuration("1h")
	hh1 := now.Add(hh)
	fmt.Println(hh1)

	// 一天后
	dd, _ := time.ParseDuration("24h")
	dd1 := now.Add(dd)
	fmt.Println(dd1)

	printSplit(50)

	// Sub 计算两个时间差
	subM := now.Sub(m1)
	fmt.Println(subM.Minutes(), "分钟")

	sumH := now.Sub(h1)
	fmt.Println(sumH.Hours(), "小时")

	sumD := now.Sub(d1)
	fmt.Printf("%v 天\n", sumD.Hours()/24)

}

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t := time.Now()
addOneHour := t.Add(time.Hour)
addTwoHour := t.Add(2 * time.Hour)
fmt.Println("增加1小时：", addOneHour)
fmt.Println("增加2小时：", addTwoHour)

subTwoHour := t.Add(-2 * time.Hour)
fmt.Println("减去2小时：", subTwoHour)

addDate := t.AddDate(1, 0, 0)
fmt.Println("增加1年：", addDate) // 2021-10-24 22:10:53.328973 +0800 CST

subDate := t.AddDate(-1, 0, 0)
fmt.Println("减去1年：", subDate) // 2019-10-24 22:10:53.328973 +0800 CST

before := t.Before(t.Add(time.Hour))
fmt.Println("before：", before)

after := t.After(t.Add(time.Hour))
fmt.Println("after：", after)

计算耗时

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t := time.Now()
time.Sleep(2e9) // 休眠2秒
delta := time.Now().Sub(t)
fmt.Println("时间差：", delta) // 2.0534341s

时间转换

毫秒转Time

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nanoSecondToTime := time.Unix(0, 1603546715761482000)
fmt.Println("毫秒值转Time：", nanoSecondToTime) // 2020-10-24 21:38:35.761482 +0800 CST

Time转秒

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secondToTime := time.Unix(1603546715, 0)
fmt.Println("秒值转Time：", secondToTime) // 2020-10-24 21:38:35 +0800 CST

iFan在路上啊

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