golang时间字符串和时间戳转换

分手后的思念是犯贱 2022-06-02 01:47 433阅读 0赞

#### 1. 获取当前时间字符串和时间戳 ####

package main
    
    import (
        "fmt"
        "time"
    )
    
    func main() {
        now := time.Now().UTC()
        // 显示时间格式： UnixDate = "Mon Jan _2 15:04:05 MST 2006"
        fmt.Printf("%s\n", now.Format(time.UnixDate))
        // 显示时间戳
        fmt.Printf("%ld\n", now.Unix())
        // 显示时分:Kitchen = "3:04PM"
        fmt.Printf("%s\n", now.Format("3:04PM"))
    }

更多时间格式

const (
            ANSIC       = "Mon Jan _2 15:04:05 2006"
            UnixDate    = "Mon Jan _2 15:04:05 MST 2006"
            RubyDate    = "Mon Jan 02 15:04:05 -0700 2006"
            RFC822      = "02 Jan 06 15:04 MST"
            RFC822Z     = "02 Jan 06 15:04 -0700" // RFC822 with numeric zone
            RFC850      = "Monday, 02-Jan-06 15:04:05 MST"
            RFC1123     = "Mon, 02 Jan 2006 15:04:05 MST"
            RFC1123Z    = "Mon, 02 Jan 2006 15:04:05 -0700" // RFC1123 with numeric zone
            RFC3339     = "2006-01-02T15:04:05Z07:00"
            RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
            Kitchen     = "3:04PM"
            // Handy time stamps.
            Stamp      = "Jan _2 15:04:05"
            StampMilli = "Jan _2 15:04:05.000"
            StampMicro = "Jan _2 15:04:05.000000"
            StampNano  = "Jan _2 15:04:05.000000000"
    )

#### 2. 时间字符串解析成时间格式 ####

package main
    
    import (
        "fmt"
        "time"
    )
    
    func main() {
        timeStr := "2018-01-01"
        fmt.Println("timeStr:", timeStr)
        t, _ := time.Parse("2006-01-02", timeStr)
        fmt.Println(t.Format(time.UnixDate))
    }

#### 3. 获取当天零点时间戳 ####

**方法1**

package main
    
    import (
        "fmt"
        "time"
    )
    
    func main() {
        timeStr := time.Now().Format("2006-01-02")
        t, _ := time.Parse("2006-01-02", timeStr)
        fmt.Println(t.Format(time.UnixDate))
        //Unix返回早八点的时间戳，减去8个小时
        timestamp := t.UTC().Unix() - 8*3600
        fmt.Println("timestamp:", timestamp)
    }

**方法2**

package main
    
    import (
        "fmt"
        "time"
    )
    
    func main() {
        now := time.Now()
        t, _ := time.ParseInLocation("2006-01-02", now.Format("2006-01-02"), time.Local)
        timestamp := t.Unix()
        fmt.Println(timestamp)
    }
    /* time.Local本地时区 var Local *Location = &localLoc 以及UTC时区 var UTC *Location = &utcLoc 还可以替换成指定时区 //func LoadLocation(name string) (*Location, error) loc, _ := time.LoadLocation("Europe/Berlin") If the name is "" or "UTC", LoadLocation returns UTC. If the name is "Local", LoadLocation returns Local. */

#### 参考 ####

官方文档：[The Go Programming Language-Package time][]

[The Go Programming Language-Package time]: https://golang.org/pkg/time/