为什么我的 ASP.NET Web API ActionFilterAttribute OnActionExecuting 没有触发? [英] Why is my ASP.NET Web API ActionFilterAttribute OnActionExecuting not firing?

问题描述

我正在尝试实现这里看到的内容:http://www.piotrwalat.net/nhibernate-session-management-in-asp-net-web-api/ 但我的 NhSessionManagementAttribute 有问题.

I'm trying to implement what's seen here: http://www.piotrwalat.net/nhibernate-session-management-in-asp-net-web-api/ but I'm having an issue with my NhSessionManagementAttribute.

我在我的 OnActionExecuting(HttpActionContext actionContext) 上设置了断点，以查看该函数是否曾经被调用过——它没有被调用过.

I've set breakpoints on my OnActionExecuting(HttpActionContext actionContext) to see whether the function was ever being called -- it wasn't.

我仔细检查了我的 global.asax.cs 文件 &发现我实际上正在注册 ActionFilter :

I double-checked my global.asax.cs file & found I am in fact registering the ActionFilter with:

GlobalConfiguration.Configuration.Filters.Add(new NhSessionManagementAttribute());

我还装饰了我的控制器类本身，以及它的属性无效的操作:

I have also decorated both my controller class itself, as well as its actions with the attribute to no avail:

public class ClientsController : ApiController {
    static readonly ClientRepository repository = new ClientRepository();

    [NhSessionManagement]
    public IEnumerable<Client> GetAllClients() {
        return repository.GetAll();
    }

    [NhSessionManagement]
    public Client GetClient(int id) {
        Client client = repository.Get(id);
        if (client == null) {
            throw new HttpResponseException(
                new HttpResponseMessage(HttpStatusCode.NotFound)
            );
        }
        return client;
    }
}

为什么这个动作过滤器不会触发其中的任何事件?

Why would this action filter not be firing any of the events within?

推荐答案

如果您在一个同时包含 MVC 和 WebAPI 程序集的项目中工作，您能否检查一下您的 ActionFilterAttribute 的命名空间是什么命名空间.这相当令人困惑，因为两者下都有两个 ActionFilterAttributes:

If you're working in a project contains both MVC and WebAPI assembilies, could you check what's the namespace your ActionFilterAttribute's namespace. It's fairly confusing cause there are two ActionFilterAttributes under both:

• WebAPI:System.Web.Http.Filters
• MVC:System.Web.Http.Mvc

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