如何将自定义 EndPointBehavior 添加到服务的 web.config？答案

【问题标题】：How to add a Custom EndPointBehavior to the web.config of the service?如何将自定义 EndPointBehavior 添加到服务的 web.config？
【发布时间】：2013-03-16 05:41:05
【问题描述】：

我已关注this article 并创建了MyMessageInspector 和MyEndPointBehavior 分类如下：

public class MyMessageInspector : IDispatchMessageInspector
{
    public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
    { 
        Console.WriteLine("Incoming request: {0}", request);
        return null;
    }

    public void BeforeSendReply(ref Message reply, object correlationState)
    {
    }
}

public class MyEndPointBehavior : IEndpointBehavior
{
    #region IEndpointBehavior Members

    public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
    {
    }

    public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
    {
    }

    public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
    {
        ChannelDispatcher channelDispatcher = endpointDispatcher.ChannelDispatcher;
        if (channelDispatcher != null)
        {
            foreach (EndpointDispatcher ed in channelDispatcher.Endpoints)
            {
                ed.DispatchRuntime.MessageInspectors.Add(new MyMessageInspector());
            }
        }
    }

    public void Validate(ServiceEndpoint endpoint)
    {
    }

    #endregion
}

如何将 MyEndPointBehavior 添加到 web.config？

我添加了以下扩展：

<extensions>
  <behaviorExtensions>
    <add name="myMessageInspector" type="MessageInspectorProject.MyEndPointBehavior, MessageInspectorProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>
  </behaviorExtensions>
</extensions>

但是当我尝试在下面使用它时，它会抱怨：

<serviceBehaviors>
    <behavior>
      <myMessageInspector/>

它的抱怨如下：

配置中的元素无效。扩展“myMessageInspector”不是从正确的扩展基类型“System.ServiceModel.Configuration.BehaviorExtensionElement”派生的。

如何在 web.config 中添加MyEndPointBehavior？

【问题讨论】：

你想要做的事情的好链接：weblogs.asp.net/paolopia/archive/2007/08/23/…
您是否尝试过使用此标签：
错误信息说明了一切，您的自定义扩展类型必须继承自 System.ServiceModel.Configuration.BehaviorExtensionElement。您可以创建一个新类，或者使MyMessageInspector 从中派生。您必须覆盖 CreateBehavior() 和 BehaviorType 成员。 BehaviorType 将返回 typeof(MyEndPointBehavior)，CreateBehavior() 将返回此类的一个实例。

标签： c# asp.net wcf

【解决方案1】：

您还必须创建一个自定义 BehaviorExtensionElement 并在 web.config 文件中使用它。有很多文章可以帮助你喜欢这些

http://weblogs.asp.net/paolopia/writing-a-wcf-message-inspector

https://github.com/geersch/WcfMessageLogging

http://burcakcakiroglu.com/?p=2083

http://trycatch.me/adding-custom-message-headers-to-a-wcf-service-using-inspectors-behaviors/

无论如何都要以这种方式修复您的代码

public class MyMessageInspector : IDispatchMessageInspector
{
    public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
    {
        Console.WriteLine("Incoming request: {0}", request);
        return null;
    }

    public void BeforeSendReply(ref Message reply, object correlationState)
    {
    }
}

public class MyEndPointBehavior : IEndpointBehavior
{
    #region IEndpointBehavior Members

    public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
    {
    }

    public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
    {
    }

    public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
    {
        ChannelDispatcher channelDispatcher = endpointDispatcher.ChannelDispatcher;
        if (channelDispatcher != null)
        {
            foreach (EndpointDispatcher ed in channelDispatcher.Endpoints)
            {
                ed.DispatchRuntime.MessageInspectors.Add(new MyMessageInspector());
            }
        }
    }

    public void Validate(ServiceEndpoint endpoint)
    {
    }

    #endregion
}

在这里添加新的 BehaviorExtensionElement

public class CustomBehaviorExtensionElement : BehaviorExtensionElement
{
    protected override object CreateBehavior()
    {
        return new MyEndPointBehavior();
    }

    public override Type BehaviorType
    {
        get
        {
            return typeof(MyEndPointBehavior);
        }
    }
}

并更新您的 web.config

<extensions>
  <behaviorExtensions>
    <add name="myMessageInspector" type="MessageInspectorProject.CustomBehaviorExtensionElement, MessageInspectorProject"/>
  </behaviorExtensions>
</extensions>

<behaviors>
  <endpointBehaviors>
    <behavior>
      <myMessageInspector />
    </behavior>
  </endpointBehaviors>
</behaviors>

【讨论】：

【解决方案2】：

对我来说，删除 web.config 中的程序集版本就足够了

Version=3.0.0.0, Culture=neutral, PublicKeyToken=null

【讨论】：