golang实现base64转码unicode转为utf-8

package main

import (
"encoding/base64"
"fmt"
"strconv"
"strings"
)

func main() {
// base64转码
str := "Hello, 世界"
encoded := base64.StdEncoding.EncodeToString([]byte(str))
fmt.Println(encoded)

// unicode转utf-8
str = "\\u4e2d\\u56fd\\u4eba"
unicodeArr := strings.Split(str, "\\u")[1:]
var utf8Arr []byte
for _, unicode := range unicodeArr {
code, _ := strconv.ParseInt(unicode, 16, 32)
utf8Arr = append(utf8Arr, byte(code))
}
utf8Str := string(utf8Arr)
fmt.Println(utf8Str)
}

// 输出：
// SGVsbG8sIOS4lueVjA==
// 中国人