c# - 带有 ActionNames 的 MVC4 WebApi 路由不允许通用 "Get"

Question

我一直无法尝试拥有多个“Get”方法，同时还具有默认值/api/{controller}。这是一个带有伪代码的示例(是的，我知道它会返回完全相同的代码)。

错误:当我尝试转到 /api/courses 时，“发现多个与请求匹配的操作”

转到 /api/courses/all 工作正常，/api/courses/3 也是如此

// GET api/courses
public IEnumerable<Courses> Get()
{
    return Db.Courses.OrderBy(x => x.Name);
}

// GET api/courses/all
[ActionName("all")]
public IEnumerable<Courses> GetAll()
{
    return Db.Courses.OrderBy(x => x.Name);
}

// GET api/courses/id
[ActionName("all")]
public Courses Get(int id)
{
    return Db.Courses.Where(x => x.id == id);
}

RouteConfig 看起来像:

routes.MapHttpRoute(
       "ApiControllerOnly",
       "api/{controller}"
);

// Allow for numeric Ids to be passed in
routes.MapHttpRoute(
       "ApiControllerAndIntegerId",
       "api/{controller}/{id}",
       null,
       new { id = @"^\d+$" }
);

routes.MapHttpRoute(
       "ApiControllerAction",
       "api/{controller}/{action}"
);

我想做的是调用:

/api/courses - returns Get()
/api/courses/all - returns GetAll()
/api/courses/3 - returns Get(id = 3)

编辑:

它还需要让 Put、Post 等也能正常工作，例如 Putting/api/courses/上的类(class)

Answer 1

Error: "Multiple actions were found that match the request" when I try to go to /api/courses

通过将 ApiControllerOnly 路由的默认操作指定为“Get”，我能够让 /api/courses 工作。这是否适用于您的场景？

        routes.MapHttpRoute(
            name: "ApiControllerOnly",
            routeTemplate: "api/{controller}",
            defaults: new { action = "Get" }
        );

编辑:

如果您的 APIController 中有额外的 Put/Post/etc 方法，您应该考虑在 ApiControllerOnly 路由上使用 HttpMethodConstraint 并添加另一条路由(即 ApiControllerOnly2 ) 用于 Put/Post/etc 方法:

        config.Routes.MapHttpRoute(
            name: "ApiControllerOnly",
            routeTemplate: "api/{controller}",
            defaults: new { action = @"Get" },
            constraints: new { httpMethod = new HttpMethodConstraint(HttpMethod.Get) }
        );

        config.Routes.MapHttpRoute(
            name: "ApiControllerOnly2",
            routeTemplate: "api/{controller}"
        );
        config.Routes.MapHttpRoute(
            name: "ApiControllerAndIntegerId",
            routeTemplate: "api/{controller}/{id}",
            defaults: null,
            constraints: new { id = @"^\d+$" }
        );

        config.Routes.MapHttpRoute(
            name: "ApiControllerAction",
            routeTemplate: "api/{controller}/{action}"
        );