Azure服务总线中BrokeredMessage主体的编码

Question

下面是Azure Service Bus客户端的包装器：

public virtual void SendMessage(object bodyObject)
{
    var brokeredMessage = 
        _messageBodySerializer.SerializeMessageBody(bodyObject);

    _queueClient.Send(brokeredMessage);
}

SerializeMessageBody由以下部分组成：

public BrokeredMessage SerializeMessageBody(object bodyObject)
{
    var brokeredMessage = new BrokeredMessage(bodyObject);

    brokeredMessage.Properties[MESSAGE_TYPE_PROPERTY_KEY] = 
                    bodyObject.GetType().AssemblyQualifiedName;

    return brokeredMessage;
}

我已经编写了一个集成测试，通过运行SendMessage，然后使用Service Bus Explorer 2.0查看消息内容来检查它是否正常工作。我们这样做是为了确保可以使用修改XML的工具来修复和重新发送消息。我发送的消息看起来像这样：

[DataContract]
public class TestServiceBusMessage
{
    [DataMember]
    public Guid ExternalIdentifier { get; set; }

    [DataMember]
    public int Identifier { get; set; }

    [DataMember]
    public string Name { get; set; }
}

问题是；当在工具上查看消息正文时，它看起来不像XML，而是如下所示：

@TestServiceBusMessageWhttp://schemas.datacontract.org/2004/07/IntegrationTests.Common.Azure.ServiceBus   i)http://www.w3.org/2001/XMLSchema-instance@ExternalIdentifier?$13d81b90-d932-437f-a11c-9106412b6c4a@
Identifier?&    @Name?Test Message   

我假设这是一个编码问题；但是，在将主体传递到BrokeredMessage构造函数或通过DataContract属性定义它时，我看不到设置编码的方法。

我该如何解决这个编码问题呢？我需要提供自己的serializer / stream吗?或者有没有办法强制默认序列化程序正确编码？

Answer 1

尝试以下代码。我对它进行了测试，可以使用我的工具(Service Bus Explorer：http://code.msdn.microsoft.com/windowsazure/Service-Bus-Explorer-f2abca5a#content)看到XML格式的有效负载。基本上，您需要在BrokeredMessage对象的构造函数中显式指定DataContractSerializer。希望这能有所帮助。再见，保罗

#region MyRegion
using System;
using System.Runtime.Serialization;
using Microsoft.ServiceBus;
using Microsoft.ServiceBus.Messaging; 
#endregion

namespace StackOverflow
{
    static class Program
    {
        #region Private Constants
        private const string QueueName = "stackoverflow";
        private const string MessageType = "MessageType";
        private const string AssemblyName = "AssemblyName";
        private const string ConnectionString = "<your-service-bus-namespace-connectionstring>"; 
        #endregion

        #region Static Methods
        static void Main()
        {
            SendMessage();
        }

        static async void SendMessage()
        {
            try
            {
                // Create NamespaceManager object
                var namespaceManager = NamespaceManager.CreateFromConnectionString(ConnectionString);
                Console.WriteLine("NamespaceManager successfully created.");

                // Create test queue
                if (!namespaceManager.QueueExists(QueueName))
                {
                    namespaceManager.CreateQueue(new QueueDescription(QueueName)
                    {
                        RequiresDuplicateDetection = false,
                        RequiresSession = false,
                        LockDuration = TimeSpan.FromSeconds(60)
                    });
                    Console.WriteLine("Queue successfully created.");
                }

                // Create MessagingFactory object
                var messagingFactory = MessagingFactory.CreateFromConnectionString(ConnectionString);
                Console.WriteLine("MessagingFactory successfully created.");

                // Create MessageSender object
                var messageSender = await messagingFactory.CreateMessageSenderAsync(QueueName);
                Console.WriteLine("MessageSender successfully created.");

                // Create message payload
                var testServiceBusMessage = new TestServiceBusMessage
                {
                    ExternalIdentifier = Guid.NewGuid(),
                    Identifier = 1,
                    Name = "Babo"
                };

                // Create BrokeredMessage object
                using (var brokeredMessage = new BrokeredMessage(testServiceBusMessage,
                                                                 new DataContractSerializer(typeof(TestServiceBusMessage)))
                {
                    Properties = {{MessageType, typeof(TestServiceBusMessage).FullName},
                                  {AssemblyName, typeof(TestServiceBusMessage).AssemblyQualifiedName}}
                })
                {
                    //Send message
                    messageSender.SendAsync(brokeredMessage).Wait();
                }
                Console.WriteLine("Message successfully sent.");
                Console.WriteLine("Press [Enter] to exit");
                Console.ReadLine();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.WriteLine("Press [Enter] to exit");
                Console.ReadLine();
            }
        } 
        #endregion
    }

    [DataContract]
    public class TestServiceBusMessage
    {
        [DataMember]
        public Guid ExternalIdentifier { get; set; }

        [DataMember]
        public int Identifier { get; set; }

        [DataMember]
        public string Name { get; set; }
    }
}