Question

我正在将.NET Core 2用于需要在服务总线上放置消息并由旧版.NET 4.6接收器读取的应用程序。接收方也会收听来自其他遗留应用程序的消息。

旧版发件人：

UserData obj = new UserData()
{
  id = 1,
  name = "Alisha"
};
BrokeredMessage message = new BrokeredMessage(consentInstated);
_client.Send(message);

传统接收者：

var dataObj = objBrokeredMessage.GetBody<UserData>();
businessFunc(dataObj.id, dataObj.name);

.NET Core 2发件人，如https://stackoverflow.com/a/45069423/1773900

中所述

var ser = new System.Runtime.Serialization.DataContractSerializer(typeof(UserData));
var ms = new MemoryStream();
ser.WriteObject(ms, objUserData);
var message = new Message(ms.ToArray());
_client.Send(message);

但是，接收方无法反序列化消息并引发以下错误

System.Runtime.Serialization.SerializationException：有一个错误反序列化UserData类型的对象。输入源是格式不正确。 ---＆GT; System.Xml.XmlException：输入来源格式不正确。

如何让两个发件人都使用相同的接收器？

Answer 1

BrokeredMessage正在使用XML二进制读取器反序列化消息。所以你的发送部分应该是这样的：

var ser = new DataContractSerializer(typeof(UserData));
var ms = new MemoryStream();
XmlDictionaryWriter binaryDictionaryWriter = XmlDictionaryWriter.CreateBinaryWriter(ms);
ser.WriteObject(binaryDictionaryWriter, obj);
binaryDictionaryWriter.Flush();
var message = new Message(ms.ToArray());

Answer 2

我们可以直接从.net核心端发送序列化json对象字符串，我们可以在.net端获取带有以下代码的消息。它在我身边正常工作。

var dataObj = message.GetBody<UserData>(new DataContractJsonSerializer(typeof(UserData)));

.net核心方发送消息代码：

var body = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(objUserData));
_client.SendAsync(new Message{Body = body,ContentType = "text/plain"}).Wait();

.net端接收消息代码：

var dataObj = message.GetBody<UserData>(new DataContractJsonSerializer(typeof(UserData)));

Answer 3

我也遇到了同样的问题，但是没有一种解决方案有效。对我来说，下面的代码有效

// model is the object that you want to sent to Topic
Model model = new Model();
var serializator = new DataContractSerializer(typeof(string));
var json = JsonConvert.SerializeObject(model);
var memoryStream = new MemoryStream();
XmlDictionaryWriter binaryDictionaryWriter = XmlDictionaryWriter.CreateBinaryWriter(memoryStream);
serializator.WriteObject(binaryDictionaryWriter, json);
binaryDictionaryWriter.Flush();
// below message can be sent to Topic via .NET Core  and will be properly deserialized in .NET Framework subscriber
var message = new Message(memoryStream.ToArray());
var client = new TopicClient(_endpoint, _channelName );
await client.SendAsync(message);

Azure服务总线 - 使用BrokeredMessage.GetBody读取.NET Core 2发送的消息

3 个答案: