Azure Service Bus与Android的连接

Question

我编写了一个简单的java程序(jdk 1.7)，它列出了我的所有服务总线主题，并将每个主题的名称打印到stdout：

         try {

         String namespace = "myservicebus"; // from azure portal
         String issuer = "owner";  // from azure portal
         String key = "asdjklasdjklasdjklasdjklasdjk";  // from azure portal

         Configuration config = ServiceBusConfiguration.configureWithWrapAuthentication(
                namespace, 
                issuer,
                key, 
                ".servicebus.windows.net", 
                "-sb.accesscontrol.windows.net/WRAPv0.9"); 

        ServiceBusContract service = ServiceBusService.create(config);
        ListTopicsResult result = service.listTopics();
        List<TopicInfo> infoList = result.getItems();
        for(TopicInfo info : infoList){
            System.out.println( info.getPath());
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

现在，我尝试在一个简单的android项目(Android 4.2)中运行这个示例，但它不起作用。运行时总是抛出以下错误：

java.lang.RuntimeException: Service or property not registered:  com.microsoft.windowsazure.services.serviceBus.ServiceBusContract

有人成功地建立了从android设备(或模拟器)到azure服务总线的连接吗？

Microsoft Azure-Java-SDK不支持android项目吗？

提前感谢

Answer 1

此错误是由于生成的apks不包含(删除)服务信息(在META-INF/ ServiceLoader下)造成的。您可以对自己进行测试，将其从生成的jar中删除，并看到同样的错误出现。在文档中说现在支持它，但我发现使用它有问题。

http://developer.android.com/reference/java/util/ServiceLoader.html

您可以使用ant手动将数据包含在apk中。

Keep 'META-INF/services'-files in apk

经过10个小时的调试，手动删除类，包括META-INF/services等，我发现Azure SDK使用了一些Android不支持的类(javax.ws.*)，任何works都适合我。

因此，我建议在Android环境中使用REST API，可以在下面找到我用来将消息发送到主题的源代码。

private static String generateSasToken(URI uri) {
    String targetUri;
    try {
        targetUri = URLEncoder
        .encode(uri.toString().toLowerCase(), "UTF-8")
        .toLowerCase();

        long expiresOnDate = System.currentTimeMillis();
        int expiresInMins = 20; // 1 hour
        expiresOnDate += expiresInMins * 60 * 1000;
        long expires = expiresOnDate / 1000;
        String toSign = targetUri + "\n" + expires;

        // Get an hmac_sha1 key from the raw key bytes
        byte[] keyBytes = sasKey.getBytes("UTF-8");
        SecretKeySpec signingKey = new SecretKeySpec(keyBytes, "HmacSHA256");

        // Get an hmac_sha1 Mac instance and initialize with the signing key
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(signingKey);
        // Compute the hmac on input data bytes
        byte[] rawHmac = mac.doFinal(toSign.getBytes("UTF-8"));

        // using Apache commons codec for base64
//      String signature = URLEncoder.encode(
//      Base64.encodeBase64String(rawHmac), "UTF-8");
        String rawHmacStr = new String(Base64.encodeBase64(rawHmac, false),"UTF-8");
        String signature = URLEncoder.encode(rawHmacStr, "UTF-8");

        // construct authorization string
        String token = "SharedAccessSignature sr=" + targetUri + "&sig="
        + signature + "&se=" + expires + "&skn=" + sasKeyName;
        return token;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

public static void Send(String topic, String subscription, String msgToSend) throws Exception {

        String url = uri+topic+"/messages";

        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost(url);

        // Add header
        String token = generateSasToken(new URI(uri));
        post.setHeader("Authorization", token);
        post.setHeader("Content-Type", "text/plain");
        post.setHeader(subscription, subscription);
        StringEntity input = new StringEntity(msgToSend);
        post.setEntity(input);

        System.out.println("Llamando al post");
        HttpResponse response = client.execute(post);
        System.out.println("Response Code : " 
                + response.getStatusLine().getStatusCode());
        if (response.getStatusLine().getStatusCode() != 201)
            throw new Exception(response.getStatusLine().getReasonPhrase());

}

静态API Azure信息的更多信息。