go_json_byte_base64.go

package main

import (
	"encoding/base64"
	"encoding/json"
	"fmt"
)

type X struct {
	B []byte `json:"b"`
}

func main() {
	s := []byte("hello world")
	x := X{
		B: make([]byte, base64.StdEncoding.EncodedLen(len(s))),
	}
	base64.StdEncoding.Encode(x.B, s)

	message, _ := json.Marshal(x)

	var y X
	json.Unmarshal(message, &y)

	fmt.Println(string(x.B), string(y.B), string(x.B) == string(y.B))
}