golang实现类似PHP json_encode和json_decode 函数

/*
    data := map[string]interface{}{
        "name":   "Tom",
        "age":    18,
        "gender": "male",
    }
    str, err := JsonEncode(data)
*/
func JsonEncode(v interface{}) (string, error) {
    b, err := json.Marshal(v)
    if err != nil {
        return "", err
    }
    return string(b), nil
}

/*
    var decodedData map[string]interface{}
    err = JsonDecode(str, &decodedData)
*/
func JsonDecode(s string, v interface{}) error {
    return json.Unmarshal([]byte(s), v)
}