WCF:从OperationContext检索MethodInfo

这花了我很长时间,但我确实找到了一种比找到并苦读整个合同更好的方法:

string action = operationContext.IncomingMessageHeaders.Action;
DispatchOperation operation = 
    operationContext.EndpointDispatcher.DispatchRuntime.Operations.FirstOrDefault(o =>
        o.Action == action);
// Insert your own error-handling here if (operation == null)
Type hostType = operationContext.Host.Description.ServiceType;
MethodInfo method = hostType.GetMethod(operation.Name);

注意:您可能会尝试在DispatchRuntime中使用OperationSelector。我发现的问题是,在我的例子中,在处理的特定阶段,OperationSelector是一个空引用。如果您有权访问此属性,则使用它可能比如上所述“扫描”OperationCollection更快、更可靠。

OperationContext.CurrentIncomingMessageHeaders.Action 为空,您可以这样做--它有点简洁:

string actionName = OperationContext.Current.IncomingMessageProperties["HttpOperationName"] as string;
Type hostType = operationContext.Host.Description.ServiceType;
MethodInfo method = hostType.GetMethod(actionName);

基于@Aaronaught和@TimDog的答案,以及 this SO question 我想出了一个解决办法 应该对REST和SOAP都有效

///<summary>Returns the Method info for the method (OperationContract) that is called in this WCF request.</summary>
System.Reflection.MethodInfo GetActionMethodInfo(System.ServiceModel.OperationContext operationContext ){
    string bindingName = operationContext.EndpointDispatcher.ChannelDispatcher.BindingName;
    string methodName;
    if(bindingName.Contains("WebHttpBinding")){
            //REST request
            methodName = (string) operationContext.IncomingMessageProperties["HttpOperationName"];
    }else{
            //SOAP request
            string action = operationContext.IncomingMessageHeaders.Action;
            methodName = operationContext.EndpointDispatcher.DispatchRuntime.Operations.FirstOrDefault(o =>o.Action == action).Name;
    }
    // Insert your own error-handling here if (operation == null)
    Type hostType = operationContext.Host.Description.ServiceType;
    return hostType.GetMethod(methodName);
}

Castle WCF集成工具使您能够通过使用DynamicProxy代理实现这一点(在许多有用的事情中)。 看一看 here .