golang gbk转utf8

package ms2mysql
import ( 
    "bytes" 
    "golang.org/x/text/encoding/simplifiedchinese" 
    "golang.org/x/text/transform" 
    "io/ioutil" 
) 
func Decode(s []byte) ([]byte, error) { 
    I := bytes.NewReader(s)
    O := transform.NewReader(I, simplifiedchinese.GBK.NewDecoder())
    d, e := ioutil.ReadAll(O)
    if e != nil {
        return nil, e
    }
    return d, nil
}