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  • golang的time包:时间字符串和时间戳的相互转换

    本博客转自:https://www.cnblogs.com/nyist-xsk/p/11448348.html

    package main
    
    import (
        "log"
        "time"
    )
    
    func main() {
        t := int64(1546926630)      //外部传入的时间戳(秒为单位),必须为int64类型
        t1 := "2019-01-08 13:50:30" //外部传入的时间字符串
    
        //时间转换的模板,golang里面只能是 "2006-01-02 15:04:05" (go的诞生时间)
        timeTemplate1 := "2006-01-02 15:04:05" //常规类型
        timeTemplate2 := "2006/01/02 15:04:05" //其他类型
        timeTemplate3 := "2006-01-02"          //其他类型
        timeTemplate4 := "15:04:05"            //其他类型
    
        // ======= 将时间戳格式化为日期字符串 =======
        log.Println(time.Unix(t, 0).Format(timeTemplate1)) //输出:2019-01-08 13:50:30
        log.Println(time.Unix(t, 0).Format(timeTemplate2)) //输出:2019/01/08 13:50:30
        log.Println(time.Unix(t, 0).Format(timeTemplate3)) //输出:2019-01-08
        log.Println(time.Unix(t, 0).Format(timeTemplate4)) //输出:13:50:30
    
        // ======= 将时间字符串转换为时间戳 =======
        stamp, _ := time.ParseInLocation(timeTemplate1, t1, time.Local) //使用parseInLocation将字符串格式化返回本地时区时间
        log.Println(stamp.Unix())  //输出:1546926630
    }
    
    package main
    
    import (
        "log"
        "time"
    )
    func main(){
        // 获取每天的零点时间戳, 一个小时的时间戳是3600
        timeStr := time.Now().Format("2006-01-02")
        t, _ := time.ParseInLocation("2006-01-02", timeStr, time.Local)
        timeUnix := t.Unix()
    }
    package main
    
    import (
        "fmt"
        "strconv"
        "time"
    )
    
    func main() {
        t := time.Now()
        fmt.Println(t)
    
        fmt.Println(t.UTC().Format(time.UnixDate))
    
        fmt.Println(t.Unix())
    
        timestamp := strconv.FormatInt(t.UTC().UnixNano(), 10)
        fmt.Println(timestamp)
        timestamp = timestamp[:10]
        fmt.Println(timestamp)
    }
    
    //输出: 
    //2019-09-02 19:17:58.2508394 +0800 CST m=+0.001994001
    //Mon Sep  2 11:17:58 UTC 2019
    //1567423078
    //1567423078250839400
    //1567423078
    package main
    
    import (
        "fmt"
        "strconv"
        "time"
    )
    
    func main() {
        const longForm = "Jan 2, 2006 at 3:04pm (MST)"
        t, _ := time.Parse(longForm, "Jun 21, 2017 at 0:00am (PST)")
        fmt.Println(t)
    
        const shortForm = "2006-Jan-02"
        t, _ = time.Parse(shortForm, "2017-Jun-21")  // 字符串转时间
        fmt.Println(t)
    
        t, _ = time.Parse("01/02/2006", "06/21/2017") // 字符串转时间
        fmt.Println(t)
        fmt.Println(t.Unix())
    
        i, err := strconv.ParseInt("1498003200", 10, 64)
        if err != nil {
            panic(err)
        }
        tm := time.Unix(i, 0)
        fmt.Println(tm)
    
        var timestamp int64 = 1498003200
        tm2 := time.Unix(timestamp, 0)
        fmt.Println(tm2.Format("2006-01-02 03:04:05 PM"))
        fmt.Println(tm2.Format("02/01/2006 15:04:05 PM"))
    }
    
    //输出
    //2017-06-21 00:00:00 +0000 PST
    //2017-06-21 00:00:00 +0000 UTC
    //2017-06-21 00:00:00 +0000 UTC
    //1498003200
    //2017-06-21 08:00:00 +0800 CST
    //2017-06-21 08:00:00 AM
    //21/06/2017 08:00:00 AM
    
    //time常用方法
    
    After(u Time) bool 
    时间类型比较,是否在Time之后
    
    Before(u Time) bool 
    时间类型比较,是否在Time之前
    
    Equal(u Time) bool 
    比较两个时间是否相等
    
    IsZero() bool 
    判断时间是否为零值,如果sec和nsec两个属性都是0的话,则该时间类型为0
    
    Date() (year int, month Month, day int) 
    返回年月日,三个参数
    
    Year() int 
    返回年份
    
    Month() Month 
    返回月份.是Month类型
    
    Day() int 
    返回多少号
    
    Weekday() Weekday 
    返回星期几,是Weekday类型
    
    ISOWeek() (year, week int) 
    返回年份,和该填是在这年的第几周.
    
    Clock() (hour, min, sec int) 
    返回小时,分钟,秒
    
    Hour() int 
    返回小时
    
    Minute() int 
    返回分钟
    
    Second() int 
    返回秒数
    
    Nanosecond() int 
    返回纳秒
    package main
    
    import (
        "fmt"
        "strings"
        "time"
    )
    
    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
    ", sumD.Hours()/24)
    
    }
    
    func printSplit(count int) {
        fmt.Println(strings.Repeat("#", count))
    }
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  • 原文地址:https://www.cnblogs.com/tortoise512/p/15316156.html
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