向 WCF REST 服务添加全局错误处理 [英] Adding global error handling to WCF REST service

问题描述

我有一个 WCF/REST Web 服务，我正在尝试向其中添加全局异常处理程序.我正在标准 .NET 网站中寻找类似于 Application_Error 事件的内容.

I have a WCF/REST Web Service that I'm trying to add a global exception handler to. I'm looking for something similar to the Application_Error event in a standard .NET website.

我发现了很多关于使用 IErrorHandler 和 IServiceBehavior 的信息，例如这里详述的内容:http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.ierrorhandler.aspx#Y1479

I've found lots of info about using IErrorHandler and IServiceBehavior like what's detailed here: http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.ierrorhandler.aspx#Y1479

这似乎是我所需要的，但我发现的每个示例都假定该服务是在 web.config 中定义的.我没有这样做 - 我正在使用 RouteTables，在 global.asax 中配置，如下所示:

That seems like what I need, but every example I've found assumes that the service is defined in the web.config. I'm not doing that - I'm using RouteTables, configured in the global.asax, like so:

 public class Global : HttpApplication
{
    void Application_Start(object sender, EventArgs e)
    {
        RegisterRoutes();
    }

    private void RegisterRoutes()
    {
        // Edit the base address of Service1 by replacing the "Service1" string below

        RouteTable.Routes.Add(new ServiceRoute("", new WebServiceHost2Factory(), typeof(myService)));


    }

那么，既然如此，我该如何配置我的自定义 IErrorHandler 和 IServiceBehavior?鉴于我使用的是 RouteTable 而不是通过 web.config 配置它，我是否走在正确的轨道上?我对 WCF 很陌生....

So, given that, how do I configure my custom IErrorHandler and IServiceBehavior? Am I even on the right track, given that I'm using a RouteTable rather than configuring it via the web.config? I'm very new to WCF....

推荐答案

IServiceBehaviour 的连接可以通过创建覆盖 的自定义 WebServiceHostFactory 来实现CreateServiceHost.

The wiring up of your IServiceBehaviour can be achieved by creating a custom WebServiceHostFactory that overrides CreateServiceHost.

例如，如果您有一个实现 IServiceBehavior 的类 GlobalErrorHandlerBehaviour，那么您可以按如下方式连接它:

For example if you have a class GlobalErrorHandlerBehaviour which implements IServiceBehavior, then you could wire it up as follows:

public class CustomWebServiceHostFactory : WebServiceHostFactory
{
    protected override ServiceHost CreateServiceHost(System.Type serviceType, System.Uri[] baseAddresses)
    {
        return ApplyGlobalErrorHandler(base.CreateServiceHost(serviceType, baseAddresses));
    }

    private ServiceHost ApplyGlobalErrorHandler(ServiceHost serviceHost)
    {
        serviceHost.Description.Behaviors.Add(new GlobalErrorHandlerBehaviour());
        return serviceHost;
    }
}

然后，您将更新对 ServiceRoute 构造函数的调用以传入此自定义工厂.

You would then update your call to the ServiceRoute constructor to pass in this custom factory.

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