5

我编写了一个简单的 java 程序(jdk 1.7),列出了我所有的服务总线主题并将每个主题的名称打印到标准输出:

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 android 项目(Android 4.2)中运行这个例子,但它不会工作。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

有没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?

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

提前致谢

4

1 回答 1

2

此错误是由于生成的 apk 不包含(删除)ServiceLoader 信息(在 META-INF/services 下)。您可以测试自己从生成的 jar 中删除它,并查看是否出现相同的错误。在文档中据说现在支持它,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

将“META-INF/services”文件保存在 apk 中

经过 10 小时调试,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.*),并且任何解决方法都对我有用。

所以我建议在 Android 环境中使用 REST API,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());

}

REST API Azure 信息中的更多信息。

于 2015-06-15T12:08:59.387 回答