Go语言基础之time包
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now() //2019-07-31 13:55:21.3410012 +0800 CST m=+0.006015601
fmt.Println(t.Format("20060102150405"))
//当前时间戳
t1 := time.Now().Unix() //1564552562
fmt.Println(t1)
//时间戳转化为具体时间
fmt.Println(time.Unix(t1, 0).String()) //2020-03-26 00:04:37 +0800 CST
//基本格式化的时间表示
fmt.Println(time.Now().String()) //2019-07-31 13:56:35.7766729 +0800 CST m=+0.005042501
fmt.Println(time.Now().Format("2006-01-02")) //2019-07-31
fmt.Println(time.Now().Format("2006-01-02 15:04:05")) //2019-07-31 13:57:52
//获取第几周
_, week := time.Now().ISOWeek()
//获取年、月、日
year, month, day := rwTools.DateYmdInts()
}
// 时间戳转年月日 时分秒
func DateFormat(timestamp int) string {
tm := time.Unix(int64(timestamp), 0)
return tm.Format("2006-01-02 15:04")
}
//时间戳转年月日
func DateFormatYmd(timestamp int) string {
tm := time.Unix(int64(timestamp), 0)
return tm.Format("2006-01-02")
}
//获取当前年月
func DateYmFormat() string {
tm := time.Now()
return tm.Format("2006-01")
}
//获取年月日时分秒（字符串类型）
func DateNowFormatStr() string {
tm := time.Now()
return tm.Format("2006-01-02 15:04:05")
}
//时间戳
func DateUnix() int {
t := time.Now().Local().Unix()
return int(t)
}
//获取年月日时分秒(time类型)
func DateNowFormat() time.Time {
tm := time.Now()
return tm
}
//获取第几周
func DateWeek() int {
_, week := time.Now().ISOWeek()
return week
}
//获取年、月、日
func DateYMD() (int,int, int) {
year, month, day := DateYmdInts()
return year,month,day
}
// 获取年月日
func DateYmdFormat() string {
tm := time.Now()
return tm.Format("2006-01-02")
}
// 获取日期的年月日
func DateYmdInts() (int, int, int) {
timeNow := time.Now()
year, month, day := timeNow.Date()
return year, int(month), day
}
//获取当天的时间范伟 Time类型 2020-08-18 00:00:00 +0800 CST 2020-08-18 23:59:59 +0800 CST
func GetCurrentTimestamp() (beginTime, endTime time.Time) {
t := time.Now()
timeStr := t.Format("2006-01-02")
beginTime, _ = time.ParseInLocation("2006-01-02", timeStr, time.Local)
endTimeTmp := beginTime.Unix() + 86399
endTime = time.Unix(endTimeTmp, 0)
return beginTime, endTime
}
//获取当天的时间范伟 int64类型 //1597680000 1597766399
func GetCurrentTimeInt64() (beginTime, endTime int64) {
t := time.Now()
timeStr := t.Format("2006-01-02")
beginTimeTmp, _ := time.ParseInLocation("2006-01-02", timeStr, time.Local)
beginTime = beginTimeTmp.Unix()
endTime = beginTime + 86399
return beginTime, endTime
}
package main
import (
"fmt"
"time"
)
func main() {
sleepDemo()
}
func test1() {
t := time.Now() // 获取当前的时间对象
//t type:time.Time value:time.Time{wall:0xbf96f99387cfb7c3, ext:190223, loc:(*time.Location)(0x571b80)}
fmt.Printf("t type:%T value:%#v \n", t, t)
//比较时间戳
dataNumber1 := int64(1586252136)
// dataNumber1 := endTime22
if t.Unix() > dataNumber1 {
fmt.Println("111111")
}
fmt.Println("22222222")
}
//时间类型
func timeDemo() {
now := time.Now()
fmt.Println("now time is ", now) // now time is 2020-03-25 22:56:17.263142275 +0800 CST m=+0.000158437
year := now.Year()
fmt.Println("year:", year) //year: 2020
month := now.Month()
fmt.Printf("month:%02d\n", month) //month:03
day := now.Day()
fmt.Println("day:", day) //day: 25
hour := now.Hour()
fmt.Println("hour:", hour) //hour: 22
minute := now.Minute()
fmt.Println("minute:", minute) //minute: 56
second := now.Second()
fmt.Println("second:", second) // second: 17
// 2020-03-25 22:56:17
fmt.Printf("%d-%02d-%02d %02d:%02d:%02d\n", year, month, day, hour, minute, second)
}
//时间戳
func timestampDemo() {
now := time.Now() //获取当前时间
timestamp1 := now.Unix() //时间戳
timestamp2 := now.UnixNano() //纳秒时间戳
fmt.Printf("current timestamp1:%v\n", timestamp1) //current timestamp1:1585148417
fmt.Printf("current timestamp2:%v\n", timestamp2) //current timestamp2:1585148417603894248
}
//使用time.Unix()函数可以将时间戳转为时间格式。
//传入时间戳 如：1586252136
func timestampDemo2(timestamp int64) {
timeObj := time.Unix(timestamp, 0) //将时间戳转为时间格式
fmt.Println(timeObj) //2020-04-07 17:35:36 +0800 CST
year := timeObj.Year() //年
month := timeObj.Month() //月
day := timeObj.Day() //日
hour := timeObj.Hour() //小时
minute := timeObj.Minute() //分钟
second := timeObj.Second() //秒
fmt.Printf("%d-%02d-%02d %02d:%02d:%02d\n", year, month, day, hour, minute, second) //2020-04-07 17:35:36
}
//添加时间
func addTimeDemo() {
t := time.Now()
//一个月后的时间
mealsNumber := 30
endTime22 := t.Add(time.Hour * 24 * time.Duration(mealsNumber)).Unix()
fmt.Printf("endTime22 type:%T value:%#v \n", endTime22, endTime22) //endTime22 type:int64 value:1587741038
}
// 时间格式化
func formatDemo() {
now := time.Now()
// 格式化的模板为Go的出生时间2006年1月2号15点04分 Mon Jan
// 24小时制
timeObj1 := now.Format("2006-01-02 15:04:05.000 Mon Jan")
fmt.Println(timeObj1) //2020-03-25 23:31:53.076 Wed Mar
fmt.Printf("Type:%T value:%#v\n", timeObj1, timeObj1) //Type:string value:"2020-03-25 23:31:53.076 Wed Mar"
// 12小时制
fmt.Println(now.Format("2006-01-02 03:04:05.000 PM Mon Jan")) //2020-03-25 11:31:53.076 PM Wed Mar
fmt.Println(now.Format("2006/01/02 15:04")) //2020/03/25 23:31
fmt.Println(now.Format("15:04 2006/01/02")) //23:31 2020/03/25
fmt.Println(now.Format("2006/01/02")) //2020/03/25
fmt.Println(now.Format("20060102150405000")) //0200325233153000
}
//客符串时间格式化成时间类型
func stringToTime() {
timestr := "2020-02-25 20:18:19"
timeObj, err := time.Parse("2006-01-02 15:04:05", timestr)
if err != nil {
fmt.Printf("parse time failed , err:%v\n", err)
return
}
fmt.Println(timeObj) //2020-02-25 20:18:19 +0000 UTC
// Type:time.Time value:time.Time{wall:0x0, ext:63718258699, loc:(*time.Location)(nil)}
fmt.Printf("Type:%T value:%#v\n", timeObj, timeObj)
fmt.Println(timeObj.Unix()) //1582661899
timestr1 := "2020-02-25"
timeObj, err = time.Parse("2006-01-02", timestr1)
if err != nil {
fmt.Printf("parse time failed , err:%v\n", err)
return
}
fmt.Println(timeObj) //2020-02-25 00:00:00 +0000 UTC
// Type:time.Time value:time.Time{wall:0x0, ext:63718185600, loc:(*time.Location)(nil)}
fmt.Printf("Type:%T value:%#v\n", timeObj, timeObj)
fmt.Println(timeObj.Unix()) //1582588800
}
//睡５秒钟
func sleepDemo() {
fmt.Println("开始了．．．")
n := 5 //int
time.Sleep(time.Duration(n) * time.Second)
// time.Sleep(5 * time.Second)
fmt.Println("５秒钟过去了．．．")
}
//Time类型.Unix 是将时间戳转为Time类型
func test() {
timestamp := time.Now().Unix() //time.Now()是当前时间戳
fmt.Println("now",timestamp) //now 1550377621
#将时间戳转为Time类型
fmt.Println(time.Unix(timestamp, 0)) //2019-02-17 12:27:01 +0800 CST
}
参考原文：
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