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我試圖運行其官方文檔中提供的Azure服務總線示例https://azure.microsoft.com/en-gb/documentation/articles/service-bus-dotnet-how-to-use-topics-subscriptions/。Azure服務總線 - SQLFilter無法按預期方式工作
創建預訂
namespaceManager.CreateSubscription(TopicName, "CreatedMessages", new SqlFilter(@"Type = 'Created'"));
發送消息
public void SendMessages()
{
var client = TopicClient.CreateFromConnectionString(_connectionString, TopicName);
for (var i = 0; i < 5; i++)
{
var message = new BrokeredMessage("TestMessage " + i);
if (i%2 == 0)
message.Properties["Type"] = "Created";
else
message.Properties["Type"] = "All";
client.Send(message);
}
}
處理信息
public void ListenMessages()
{
Task.Factory.StartNew(() => SubscribeMessages("CreatedMessages"));
}
public void SubscribeMessages(string subscription)
{
var allMessagesClient = SubscriptionClient.CreateFromConnectionString(_connectionString, TopicName, subscription);
allMessagesClient.OnMessage(message =>
{
try
{
Console.WriteLine($"** {subscription} **");
Console.WriteLine("Body: " + message.GetBody<string>());
Console.WriteLine("MessageID: " + message.MessageId);
Console.WriteLine("Message Type: " + message.Properties["Type"]);
Console.WriteLine();
message.Complete();
}
catch (Exception)
{
message.Abandon();
}
},
new OnMessageOptions
{
AutoComplete = false,
AutoRenewTimeout = TimeSpan.FromMinutes(1)
});
}
上面的代碼按預期工作。
但是,面臨的問題是,'Type'屬性被重命名爲'MessageType'或'Name'之類的任何內容時,SQLFilter會停止工作,並且我不會再收到任何消息。
我在做什麼錯?
難道是舊的「基於類型」和新的過濾器相互衝突?請記住,過濾器是持久的。 –