韵达签名

func YunDaSign(structData interface{}) ([]byte, string, string) {
    jsonData, _ := json.Marshal(structData)
    appKey := "你的key"
    appSecret := "你的秘钥"
    newStr := string(jsonData) + "_" + appSecret
    md := md5.New()
    md.Write([]byte(newStr))
    md5Str := hex.EncodeToString(md.Sum(nil))
    return jsonData, appKey, md5Str
}

京东签名

func JdSigin(body string, path string) (string, string, string, string, string) {
    appKey := "你的key"
    appSecret := "你的秘钥"
    accessToken := "你的token"
    timestamp := Util.GetDate()
    algorithm := "md5-salt"
    content := strings.Join([]string{
        appSecret,
        "access_token", accessToken,
        "app_key", appKey,
        "method", path,
        "param_json", body,
        "timestamp", timestamp,
        "v", "2.0",
        appSecret,
    }, "")

    sign, err := Sign(algorithm, []byte(content), appSecret)
    if err != nil {
        panic(err)
    }
    return sign, appKey, accessToken, timestamp, algorithm
}

func Sign(algorithm string, data []byte, secret string) (string, error) {
    if algorithm == "md5-salt" {
        h := md5.New()
        if _, err := h.Write(data); err != nil {
            return "", err
        }
        return fmt.Sprintf("%x", h.Sum(nil)), nil
    } else if algorithm == "HMacMD5" {
        h := hmac.New(md5.New, []byte(secret))
        if _, err := h.Write(data); err != nil {
            return "", err
        }
        return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
    } else if algorithm == "HMacSHA1" {
        h := hmac.New(sha1.New, []byte(secret))
        if _, err := h.Write(data); err != nil {
            return "", err
        }
        return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
    } else if algorithm == "HMacSHA256" {
        h := hmac.New(sha256.New, []byte(secret))
        if _, err := h.Write(data); err != nil {
            return "", err
        }
        return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
    } else if algorithm == "HMacSHA512" {
        h := hmac.New(sha512.New, []byte(secret))
        if _, err := h.Write(data); err != nil {
            return "", err
        }
        return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
    }
    return "", fmt.Errorf("algorithm %s not supported yet", algorithm)
}