golang将uint32与byte[]互转

package main

import (
	"encoding/binary"
	"fmt"
)

func main() {
	// 一个长度为4的byte切片，表示一个负数
	bytes := []byte{0xFF, 0xFF, 0xFF, 0xFF}

	// 将byte切片转换为int32
	num := int32(binary.BigEndian.Uint32(bytes))
	fmt.Printf("Byte切片转换为Int32：%d\n", num)

	// 创建一个长度为4的byte切片
	ibytes := make([]byte, 4)

	// 将int32值写入byte切片中
	binary.BigEndian.PutUint32(ibytes, uint32(num))

	fmt.Printf("Int32写入Byte切片：%#v\n", ibytes)
}

在线运行效果 in https://go.dev/play/