Azure Service Bus无法接收JSON正文

Question

When debugging this code, the application stops. No error message or exception are shown.

Project X:

client.OnMessage((message) =>
{
    using (var stream = message.GetBody<Stream>())
    using (var streamReader = new StreamReader(stream, Encoding.UTF8))
    {
        var body = streamReader.ReadToEnd();
    }
 }

Below I'm POSTing JSON objects through a REST API.

Project Y:

public void CreateMessage<T>(T messageToSend, string queueAddress, WebClient webclient)
{
    var apiVersion = "&api-version=2014-01";
    var serializedMessage = JsonConvert.SerializeObject(messageToSend, Formatting.Indented);
    string receivedMessageBody = webclient.UploadString(queueAddress + "/messages" + "?timeout=60&" + apiVersion, "POST", serializedMessage);

}

I can see that messages are received in Azure portal, so there is no authentication problem. Also earlier when I passed data with the Azure SDK with the help of BrokeredMessage, I was able to receive JSON objects as expected. However, I need to use the REST API.

As seen in the picture, the MessageID is there, and I'm also able to get properties. But I want to read the content of the body.

Picture of received object

.

Any ideas how I can get the body?

Answer 1

According to your description, I checked this issue and followed Send Message to send my messages to service bus queue.

For Content-Type to application/atom+xml;type=entry;charset=utf-8 , your payload need to be serialized using DataContractSerializer with a binary XmlDictionaryWriter. So you need to construct your payload as follows:

Define your object and send the message:

[DataContract]
public class DemoMessage
{
    [DataMember]
    public string Title { get; set; }
}

wc.Headers["Content-Type"] = "application/atom+xml;type=entry;charset=utf-8";
MemoryStream ms = new MemoryStream();
DataContractSerializer serializer = new DataContractSerializer(typeof(DemoMessage));
serializer.WriteObject(ms, new DemoMessage() { Title = messageBody });
wc.UploadString(sendAddress, "POST",System.Text.UTF8Encoding.UTF8.GetString(ms.ToArray()));

Then you could use the following code to receive the message:

var message = message.GetBody<DemoMessage>(new DataContractSerializer(typeof(DemoMessage)));

For Content-Type to text/plain or not be specified, you could serialize the payload as follows:

var messageBody = JsonConvert.SerializeObject(new DemoMessage(){ Title = messageBody }, Newtonsoft.Json.Formatting.Indented);
wc.UploadString(sendAddress, "POST", messageBody);

For receiving the message, you could use the code below:

using (var stream = message.GetBody<Stream>())
{
    using (var streamReader = new StreamReader(stream, Encoding.UTF8))
    {
        msg = streamReader.ReadToEnd();
        var obj=JsonConvert.DeserializeObject<DemoMessage>(msg);
    }
}

UPDATE:

When debugging this code, the application stops. No error message or exception are shown.

For console application, after configured the client.OnMessage , you need to use Console.ReadKey() or Console.ReadLine() to prevent your application from exiting. Moreover, you could try-catch-throw your processing within client.OnMessage to retrieve the detailed error message for troubleshooting.

UPDATE2:

I just used the following code in my console application with the target framework 4.6.2 and referenced WindowsAzure.ServiceBus.4.1.3.

static void Main(string[] args)
{   
    //send the message
    var wc = new WebClient();
    wc.Headers["Authorization"] = createToken("https://brucesb.servicebus.windows.net/order", "RootManageSharedAccessKey", "{your-key}");
    var messageBody = JsonConvert.SerializeObject(new DemoMessage() { Title = "hello world!!!!" }, Newtonsoft.Json.Formatting.Indented);
    wc.UploadString("https://brucesb.servicebus.windows.net/order/messages", "POST", messageBody);

    //receive the message
    QueueClient client = QueueClient.CreateFromConnectionString(connectionString, "order");
    client.OnMessage(message =>
    {
        using (var stream = message.GetBody<Stream>())
        {
            using (var streamReader = new StreamReader(stream, Encoding.UTF8))
            {
                var msg = streamReader.ReadToEnd();
                var obj = JsonConvert.DeserializeObject<DemoMessage>(msg);
                Console.WriteLine(msg);
            }
        }
    });
    Console.WriteLine("Press any key to exit...");
    Console.ReadLine();
}

static string createToken(string resourceUri, string keyName, string key)
{
    var expiry = (long)(DateTime.UtcNow.AddDays(1) - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds;
    string stringToSign = HttpUtility.UrlEncode(resourceUri) + "\n" + expiry;
    HMACSHA256 hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key));
    var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(stringToSign)));
    var sasToken = String.Format(CultureInfo.InvariantCulture, "SharedAccessSignature sr={0}&sig={1}&se={2}&skn={3}", HttpUtility.UrlEncode(resourceUri), HttpUtility.UrlEncode(signature), expiry, keyName);
    return sasToken;
}

Test: