golang生成uuid

1，借助linux系统命令

/usr/bin/uuidgen

1.1 代码

package main

import (
    "fmt"
    "log"
    "os/exec"
)

func main(){
    out,err := exec.Command("uuidgen").Output()
    if err!=nil {
        log.Fatal(err)
    }
    fmt.Printf("%s\n", out)
}

2 google/uuid

go get -u -v github.com/google/uuid

2.2 代码

package main

import (
    "fmt"
    "github.com/google/uuid"
)

func main(){
    id := uuid.New()
    fmt.Printf("%s %s\n",  id, id.Version().String()) // xxxxxxxxxx VERSION_4
    fmt.Printf("%s\n", uuid.New().String()) // xxxxxx
}