golang 中 byte[] 数组和int 相互转换

package main

import (

    "fmt"

    "encoding/binary"

)

func Int64ToBytes(i int64) []byte {

    var buf = make([]byte, 8)

    binary.BigEndian.PutUint64(buf, uint64(i))

    return buf

}

func BytesToInt64(buf []byte) int64 {

    return int64(binary.BigEndian.Uint64(buf))

}

func main() {

    var i int64 = 2323

    buf := Int64ToBytes(i)

    fmt.Println(buf)

    fmt.Println(BytesToInt64(buf))

}