WCF路由所有的请求到一个方法route all request to one operation

以下实现的目标是:

localhost:6677/Services/China

localhost:6677/Services/USA

localhost:6677/Services/...

以上所有调用都走到Service方法中，因为支持的国家是未知的，不能写成方法，并且请求的schame已经确定，不能再做修改，所以就有了以下实现:

定义Service Interface，包含一个方法Service.

代码 比较简单，只是重写OperationSelector属性，返回所有请求到方法"Service"(大小区分)

public class RouteBehaviorExtension : BehaviorExtensionElement
{
public override Type BehaviorType
{
get { return typeof(RouteBehavior); }
}
protected override object CreateBehavior()
{
return new RouteBehavior();
}
}

public class RouteBehavior : Attribute, IEndpointBehavior
{
private _operationSelector;

public RouteBehavior()
{
_operationSelector = new Router();
}

public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
{
}

public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
{
}

public void ApplyDispatchBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.EndpointDispatcher endpointDispatcher)
{
endpointDispatcher.DispatchRuntime.OperationSelector = _operationSelector;
}

public void Validate(ServiceEndpoint endpoint)
{
}
}

internal class Router : IDispatchOperationSelector
{
public string SelectOperation(ref Message message)
{
return "Service";
}
}

配置:

添加RouteBehaviorExtension,并加该Behavior到EndpointBehaviors(注意Behavior的顺序,从上而下依次执行的)

取第二个参数:

OperationContext.Current.IncomingMessageHeaders.To.Segments[2]