Azure Service Bus无法接收JSON正文

时间:2017-11-14 00:04:42

标签: c# rest azure azure-storage azureservicebus

调试此代码时,应用程序停止。没有显示错误消息或异常。

项目X:

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

下面我通过REST API发布JSON对象。

项目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);

}

我可以看到在Azure门户中收到消息,因此没有身份验证问题。同样在早些时候,我在BrokeredMessage的帮助下使用Azure SDK传递数据时,我能够按预期接收JSON对象。但是,我需要使用REST API。

如图所示,MessageID就在那里,我也能够获得属性。但我想阅读身体的内容。

收到的物品的图片

我有什么想法可以得到身体吗?

1 个答案:

答案 0 :(得分:0)

根据您的描述,我检查了此问题并按照Send Message将我的消息发送到服务总线队列。

对于Content-Typeapplication/atom+xml;type=entry;charset=utf-8,您的有效负载需要使用DataContractSerializer和二进制XmlDictionaryWriter进行序列化。因此,您需要按如下方式构建有效负载:

定义您的对象并发送消息:

[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()));

然后您可以使用以下代码来接收消息:

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

对于Content-Type为text/plain或未指定,您可以按如下方式序列化有效负载:

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

要接收消息,您可以使用以下代码:

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

<强>更新

  

调试此代码时,应用程序停止。没有显示错误消息或异常。

对于控制台应用程序,在配置client.OnMessage后,您需要使用Console.ReadKey()Console.ReadLine()来阻止您的应用程序退出。此外,您可以在try-catch-throwclient.OnMessage进行处理,以检索详细的错误消息以进行故障排除。

<强> UPDATE2:

我刚在控制台应用程序中使用了以下代码和目标框架4.6.2,并引用了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;
}

<强>测试

enter image description here