MSMQ，消息放在队列中，在前看不见，但永远不会被服务合约回升 [英] MSMQ, Message is put on queue and disapears but is never picked up by service contract

问题描述

我有一个本地专用队列。我也有一个MVC的应用程序，监听使用msmqIntegrationBinding队列内的WCF服务。的问题是，当排队的消息，但是该消息后在前看不见的瞬间服务合同从不调用。该消息是不是在毒害队列中。下面是配置部分，其中我宣布绑定到队列：

I have a local private queue. I also have a WCF-service inside an MVC-application that listens to the queue using msmqIntegrationBinding. The problem is that the service contract is never invoked when a message is queued but the message disapears the moment after. The message is not in the poison queue. Here is the config-part where i declare the binding to the queue:

<services>
  <service name="SkruvInfo.Web.Service.QueueMessageReceiver">
    <endpoint address="msmq.formatname:DIRECT=OS:LEIA\private$\screwinfo_autotests_messagequeue"
                      binding="msmqIntegrationBinding"
                      bindingConfiguration="MsmqBinding"
                      contract="SkruvInfo.Web.Service.IQueueMessageReceiver" />
  </service>
</services>

和这里的合同：

[ServiceContract(Namespace = "http://localhost/SkruvWeb/Service")]
public interface IQueueMessageReceiver
{
    [OperationContract(IsOneWay = true, Action = "*")]
    void PutScrewInfoMessage(MsmqMessage<string> msg);
}

这是在服务方式：

    [OperationBehavior(TransactionScopeRequired = true, TransactionAutoComplete = true)]
    public void PutScrewInfoMessage(System.ServiceModel.MsmqIntegration.MsmqMessage<string> msg)
    {
        log4net.Config.XmlConfigurator.Configure();
        var log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        try
        {
            log.Debug("Message from queue: " + msg.Body.ToString(CultureInfo.InvariantCulture));
            var xDoc = new XmlDocument();
            xDoc.LoadXml(msg.Body);
            CacheScrewInfoModelFromScrewInfoXmlDoc(xDoc);
        }
        catch (Exception e)
        {
            log.Error("Error parsing message from queue",e);
            EventLog.WriteEntry("Application","Message error for screws");
        }
    }

为什么消息在前看不见任何建议，但不会调用？服务

Any suggestions to why the message disapears but does not invoke the service?

推荐答案

尝试修改与ServiceKnownType属性的服务合同：

Try to modify your service contract with ServiceKnownType attribute:

[ServiceContract(Namespace = "http://localhost/SkruvWeb/Service")]
[ServiceKnownType(typeof(String))]
public interface IQueueMessageReceiver
{
    [OperationContract(IsOneWay = true, Action = "*")]
    void PutScrewInfoMessage(MsmqMessage<string> msg);
}

更新

如果您使用的是MsmqIntegrationBinding我假设您的队列客户端就像一个VB6客户端遗留应用程序？如果是这样你需要在你的服务绑定配置指定序列化格式。例如：

If you are using MsmqIntegrationBinding I am assuming your queue client is a legacy application like a VB6 client? If so you will need to specify the serialization format in your service binding configuration. For example:

  <msmqIntegrationBinding>
    <binding name="MsmqBinding" serializationFormat="ActiveX">
      <security mode="None" />
    </binding>
  </msmqIntegrationBinding>

Permissable值记录的这里。

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