如何记录服务级别WCF中的JSON响应

Question

我有一个WCF服务，它将JSON返回给客户端。

这是在app.config

<system.serviceModel> 
<services> 
    <service name="MyServices.MyService"> 
    <endpoint address="" behaviorConfiguration="JsonBehavior" binding="webHttpBinding" 
     contract="Myervices.IMyervice"> 
     <identity> 
     <dns value="localhost" /> 
     </identity> 
    </endpoint> 
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> 
    <host> 
     <baseAddresses> 
     <add baseAddress="http://localhost:8732/Design_Time_Addresses/MyEmulator/Service1/" /> 
     </baseAddresses> 
    </host> 
    </service> 
</services> 
<behaviors> 
    <serviceBehaviors> 
    <behavior> 
     <serviceMetadata httpGetEnabled="True"/> 
     <serviceDebug includeExceptionDetailInFaults="True"/> 
    </behavior> 
    </serviceBehaviors> 
    <endpointBehaviors> 
    <behavior name="JsonBehavior"> 
     <webHttp /> 
    </behavior> 
    </endpointBehaviors> 
</behaviors> 

这是由服务暴露现在

[OperationContract] 
    [WebInvoke(BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Json, Method = "GET", UriTemplate = "me/{id}")] 
    JsonObject GetObject(string id, string connection_type); 

样品opertaion，我想的是，服务接收记录每个请求来自客户和回复给客户的回应...在这种情况下，它是罪JSOn。

我创建一个自定义MessageInspector如下

public class MyMessageInspector : IDispatchMessageInspector 
{ 
    private bool LoggingEnabled; 
    #region IDispatchMessageInspector Members 

    public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext) 
    { 
     Guid correlationState = Guid.NewGuid(); 
     if (this.LoggingEnabled) 
     { 
      StringBuilder message = new StringBuilder(); 
      message.AppendFormat("CorrelationState = {0}{1}", correlationState, Environment.NewLine); 
      message.AppendFormat("Local Address = {0}{1}", channel.LocalAddress, Environment.NewLine); 
      message.AppendFormat("Remote Address = {0}{1}", channel.RemoteAddress, Environment.NewLine); 
      message.AppendLine("Request"); 
      message.AppendLine(request.ToString()); 
      message.AppendLine(); 
      this.logger.LogMessage(message.ToString()); 
     } 

     return correlationState; 
    } 

    public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState) 
    { 
     if (this.LoggingEnabled) 
     { 
      StringBuilder message = new StringBuilder(); 
      message.AppendFormat("CorrelationState = {0}{1}", correlationState, Environment.NewLine); 
      message.AppendLine("Reply"); 
      message.AppendLine(reply.ToString()); 
      message.AppendLine(); 
      this.logger.LogMessage(message.ToString()); 
     } 
    } 

    #endregion 
} 

但这似乎没有记录任何的resposne ..的response.Tostring的（）只说：“......流”

的如果我的服务以SOAP XML格式返回数据，上面的工作将会发生......但我希望它记录JSON响应，这是我在调用REST服务端点时在浏览器中下载的* .js文件内部的文本。例如：http://localhost:8080/MyService/me/2/

有什么想法我可以做到这一点？

Answer 1

此代码提供了使用REST消息的机制，并且作为奖励允许SOAP正常通过。这是一个有点侵入性（流被阅读破坏，所以代码需要重新生成它），但我还没有找到更好的方法。

http://code.msdn.microsoft.com/WCF-REST-Message-Inspector-c4b6790b