WebAPI控制器继承和属性路由

Question

我有很少的控制器继承自相同的基类.在他们不相互分享的不同行为中,他们确实有一些完全相同.我希望在我的基类上有这些,因为它们都完全相同,只是它们通过不同的路径访问.

我应该如何用几种不同的路线定义这些行为？

我继承的类也有一个RoutePrefixAttribute集合,所以每个类都指向不同的路由.

例

我有一个叫做抽象基类Vehicle,然后继承Car,Bike,Bus等所有的问题都有共同行动Move()

/bus/move
/car/move
/bike/move

如何Move()在我的基类上定义操作,Vehicle以便在每个子类路由上执行？

Answer 1

检查我在这里给出的答案WebApi2属性路由继承控制器,它引用了这篇文章的答案.NET WebAPI属性路由和继承

你需要做的是覆盖DefaultDirectRoutePrivider:

public class WebApiCustomDirectRouteProvider : DefaultDirectRouteProvider {
    protected override IReadOnlyList<IDirectRouteFactory>
        GetActionRouteFactories(HttpActionDescriptor actionDescriptor) {
        // inherit route attributes decorated on base class controller's actions
        return actionDescriptor.GetCustomAttributes<IDirectRouteFactory>(inherit: true);
    }
}

完成后,您需要在web api配置中进行配置

public static class WebApiConfig {
    public static void Register(HttpConfiguration config) {
        .....
        // Attribute routing. (with inheritance)
        config.MapHttpAttributeRoutes(new WebApiCustomDirectRouteProvider());
        ....
    }
}

然后,您就可以按照这样的描述进行操作

public abstract class VehicleControllerBase : ApiController {

    [Route("move")] //All inheriting classes will now have a `{controller}/move` route 
    public virtual HttpResponseMessage Move() {
        ...
    }
}

[RoutePrefix("car")] // will have a `car/move` route
public class CarController : VehicleControllerBase { 
    public virtual HttpResponseMessage CarSpecificAction() {
        ...
    }
}

[RoutePrefix("bike")] // will have a `bike/move` route
public class BikeController : VehicleControllerBase { 
    public virtual HttpResponseMessage BikeSpecificAction() {
        ...
    }
}

[RoutePrefix("bus")] // will have a `bus/move` route
public class BusController : VehicleControllerBase { 
    public virtual HttpResponseMessage BusSpecificAction() {
        ...
    }
}