패키지 가져와야죠..

go get golang.org/x/text

아래는 예제 입니다.


import (
	"bytes"
	"errors"
	"io/ioutil"
	"strings"

	"golang.org/x/text/encoding/japanese"
	"golang.org/x/text/encoding/korean"
	"golang.org/x/text/encoding/simplifiedchinese"
	"golang.org/x/text/encoding/traditionalchinese"
	"golang.org/x/text/transform"
)

// ToUTF8 convert from CJK encoding to UTF-8
func ToUTF8(from string, s []byte) ([]byte, error) {
	var reader *transform.Reader
	switch strings.ToLower(from) {
	case "gbk", "cp936", "windows-936":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewDecoder())
	case "gb18030":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.GB18030.NewDecoder())
	case "gb2312":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.HZGB2312.NewDecoder())
	case "big5", "big-5", "cp950":
		reader = transform.NewReader(bytes.NewReader(s), traditionalchinese.Big5.NewDecoder())
	case "euc-kr", "euckr", "cp949":
		reader = transform.NewReader(bytes.NewReader(s), korean.EUCKR.NewDecoder())
	case "euc-jp", "eucjp":
		reader = transform.NewReader(bytes.NewReader(s), japanese.EUCJP.NewDecoder())
	case "shift-jis":
		reader = transform.NewReader(bytes.NewReader(s), japanese.ShiftJIS.NewDecoder())
	case "iso-2022-jp", "cp932", "windows-31j":
		reader = transform.NewReader(bytes.NewReader(s), japanese.ISO2022JP.NewDecoder())
	default:
		return s, errors.New("Unsupported encoding " + from)
	}
	d, e := ioutil.ReadAll(reader)
	if e != nil {
		return nil, e
	}
	return d, nil
}

// FromUTF8 convert from UTF-8 encoding to CJK encoding
func FromUTF8(to string, s []byte) ([]byte, error) {
	var reader *transform.Reader
	switch strings.ToLower(to) {
	case "gbk", "cp936", "windows-936":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewEncoder())
	case "gb18030":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.GB18030.NewEncoder())
	case "gb2312":
		reader = transform.NewReader(bytes.NewReader(s), simplifiedchinese.HZGB2312.NewEncoder())
	case "big5", "big-5", "cp950":
		reader = transform.NewReader(bytes.NewReader(s), traditionalchinese.Big5.NewEncoder())
	case "euc-kr", "euckr", "cp949":
		reader = transform.NewReader(bytes.NewReader(s), korean.EUCKR.NewEncoder())
	case "euc-jp", "eucjp":
		reader = transform.NewReader(bytes.NewReader(s), japanese.EUCJP.NewEncoder())
	case "shift-jis":
		reader = transform.NewReader(bytes.NewReader(s), japanese.ShiftJIS.NewEncoder())
	case "iso-2022-jp", "cp932", "windows-31j":
		reader = transform.NewReader(bytes.NewReader(s), japanese.ISO2022JP.NewEncoder())
	default:
		return s, errors.New("Unsupported encoding " + to)
	}
	d, e := ioutil.ReadAll(reader)
	if e != nil {
		return nil, e
	}
	return d, nil
}


출처 : https://blog.minidump.info/2016/10/golang-convert-between-cjk-encodings-and-utf8/