连接的Azure服务总线与Android [英] Connecting Azure Service Bus with Android

问题描述

我写了一个简单的Java程序（JDK 1.7），列出了所有我的服务总线主题，并打印出每个主题到标准输出的名称：

I wrote a simply java program (jdk 1.7) that lists all my service bus topics and prints out the name of each topic to 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，我试图在一个简单的Andr​​oid项目（Android版4.2）运行这个例子，但它不会工作。
运行时总是抛出以下错误：

Now, i am trying to run this example in a simple android project (Android 4.2) but it wont work. The runtime always throws following error:

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

有没有人成功地建立了从Android设备（或仿真器），以蔚蓝的服务总线的连接？

Has anyone successfully established a connection from an android device (or emulator) to azure service bus?

请问微软Azure-Java的SDK不支持Android项目？

Does the Microsoft Azure-Java-SDK not support android projects?

在此先感谢

推荐答案

此错误是由于生成的APK不包括（删除）的ServiceLoader信息（在META-INF /服务）的事实。您可以测试自己从生成的JAR删除它，看看出现同样的错误。在文档据说它现在支持，但我发现问题来使用它。

This error is due to the fact that apks generated do not include (remove) the ServiceLoader information (under META-INF/services). You can test yourself deleting it from the jar generated and see that the same error appears. In the documentation it is said that it is now supported, but i found problems to use it.

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

您可以通过手动包括在APK数据蚁

You can include manually the data in the apk using ant

保持META-INF / services'-文件的apk

10小时调试结束后，手动删除类，包括META-INF /服务等，我发现，在Azure SDK使用不支持Android的一些类（javax.ws。*）和任何woraround为我工作。

After 10h debugging, removing classes manually, including META-INF/services, etc, I found that the Azure SDK uses some classes not supported by Android (javax.ws.*) and any woraround works for me.

因此​​，我建议使用的Andr​​oid环境中REST API，找到下面的源$ C ​​$ C I用于sebd消息的话题。

So I would recommend using the REST API in Android environments, find below the source code i used to sebd messages to the topic.

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());

}

在REST API Azure的信息进一步的信息。

Further info at REST API Azure information.

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