java - 在 Android 上生成 Azure SAS token

Question

尝试生成 Azure SAS token 以便能够使用服务总线 REST Api。

找到此链接:

http://blog.simontimms.com/2015/01/30/sending-message-to-azure-service-bus-using-rest/

如何在 Android 上实现相同的效果？

我当前的尝试如下所示:

private String generateSasToken(String uri, String keyName, String key){
    String ret = "";

    long tokenExpirationTime = (System.currentTimeMillis() / 1000) + (10 * 365 * 24 * 60 * 60);

    try {
        String stringToSign = new URL(uri).toString() + "\n" + tokenExpirationTime;
        SecretKey secretKey = null;

        byte[] keyBytes = key.getBytes("UTF-8");

        Mac mac = Mac.getInstance("HMACSHA256");

        secretKey = new SecretKeySpec(keyBytes, mac.getAlgorithm());

        mac.init(secretKey);

        String signature = Base64.encodeToString(mac.doFinal(stringToSign.getBytes("UTF-8")), Base64.DEFAULT);
        ret = String.format("SharedAccessSignature sr=%s&sig=%s&se=%s&skn=%s",
                URLEncoder.encode(uri),
                URLEncoder.encode(signature),
                String.valueOf(tokenExpirationTime),
                keyName);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    return ret;
}

使用 Postman 调用服务总线的 Rest API 后，我得到以下信息:

401 40103: Invalid authorization token signature Time 261 ms

<小时/>

更新:找到此链接

https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-android-get-started/

第 6 节下的 android 代码

Answer 1

我没有Android环境可以测试，我在只有java环境下有类似的场景，它工作正常，以下是我的代码:

private static String generateSasToken(String uri, String keyName, String key){
        String ret = "";

       // long tokenExpirationTime = (System.currentTimeMillis() / 1000) + (10 * 365 * 24 * 60 * 60);

        Date now = new Date();
        Date previousDate=new Date(1970);
        long tokenExpirationTime = ((now.getTime() - previousDate.getTime()) / 1000 )+3600;

        try {
            String stringToSign = URLEncoder.encode(new URL(uri).toString(),java.nio.charset.StandardCharsets.UTF_8.toString()) + "\n" + tokenExpirationTime;

            System.out.println(stringToSign);
            SecretKey secretKey = null;

            byte[] keyBytes = key.getBytes("UTF-8");

            Mac mac = Mac.getInstance("HMACSHA256");

            secretKey = new SecretKeySpec(keyBytes, mac.getAlgorithm());

            mac.init(secretKey);

            byte[] digest = mac.doFinal(stringToSign.getBytes());
            //We then use the composite signing key to create an oauth_signature from the signature base string
            String signature = Base64.encodeBase64String(digest);
            System.out.println( URLEncoder.encode(signature, java.nio.charset.StandardCharsets.UTF_8.toString()));
           // String signature = Base64.encodeBase64String(mac.doFinal(stringToSign.getBytes("UTF-8")));
            ret = String.format("SharedAccessSignature sr=%s&sig=%s&se=%s&skn=%s",
                    URLEncoder.encode(uri, java.nio.charset.StandardCharsets.UTF_8.toString()),
                    URLEncoder.encode(signature, java.nio.charset.StandardCharsets.UTF_8.toString()),
                    String.valueOf(tokenExpirationTime),
                    keyName);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        return ret;
    }

我改变了两个地方，1)tokenExpirationTime 2)URLEncoder.encode the String stringTosign，请尝试我的建议，希望这能给你一些提示。