属性路由不起作用

Question

我正在 visual studio Express 2013 中休息 api。

我有 2 个控制器：一个用于订单，一个用于客户。

我已经创建了以下内容：

/api/clients 获取所有客户的信息

/api/clients/1 获取 id = 1 的客户端信息

/api/orders/10 获取 id = 10 的订单信息

现在，我想创建这个：

/api/clients/1/orders - 获取 id 为 1

的客户的所有订单信息

我读过有关属性路由的内容，但我无法让它发挥作用。

OrdersController.cs

[EnableCors(origins: "*", headers: "*", methods: "*")]
public class OrdersController : ApiController
{
    public Order Get(string id)
    {
        // ...
    }

    [Route("clients/{id}/orders")]
    public List<Order> GetByClient(string id)
    {
        // ...
    }
}

WebApiConfig.cs

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Enable CORS
        config.EnableCors();

        //config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );
    }
}

RouteConfig.cs

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}

像这样，所有其他请求都正常工作，但是当我尝试访问 /api/clients/1/orders 时，出现错误 HTTP Error 404.0 - Not Found. The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

但是一旦我取消注释 config.MapHttpAttributeRoutes();，我就无法再访问任何请求 - 它们都是 return 这个：

<Error>
    <Message>An error has occurred.</Message>
<ExceptionMessage>
    The object has not yet been initialized. Ensure that HttpConfiguration.EnsureInitialized() is called in the application's startup code after all other initialization code.
</ExceptionMessage>
<ExceptionType>System.InvalidOperationException</ExceptionType>
<StackTrace>
    at System.Web.Http.Routing.RouteCollectionRoute.get_SubRoutes() at System.Web.Http.Routing.RouteCollectionRoute.GetRouteData(String virtualPathRoot, HttpRequestMessage request) at System.Web.Http.WebHost.Routing.HttpWebRoute.GetRouteData(HttpContextBase httpContext)
</StackTrace>
</Error>

我做错了什么？

Answer 1

取消注释您的 config.MapHttpAttributeRoutes() 行，然后在您的 Global.asax 文件中，替换为：

WebApiConfig.Register(GlobalConfiguration.Configuration);

有了这个：

GlobalConfiguration.Configure(WebApiConfig.Register);

您可以在这里阅读：

Attribute Routing in ASP.NET Web API 2

Answer 2

使用路由属性 [Route("clients/{id}/orders")]，您应该访问操作 GetByClient() 而不是 /api/clients/1/orders url，而是 /clients/1/orders。要获得原始 url 只需修复路由：

[Route("api/clients/{id}/orders")]
public List<Order> GetByClient(string id)

属性路由不起作用

Attribute Routing doesn't work

c#

asp.net

asp.net-mvc-routing

asp.net-web-api