WebApi 路由：api/{controller}/{id} 和 api/{controller}/{action} 同时

Question

我有默认的 webapi 路由配置：

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

我想支持以下场景：

//api/mycontroller
public IQueryable<MyDTO> Get();

//api/mycontroller/{id} where id can be anything except "customaction1" and "customaction2"
public HttpResponseMessage Get(string id);

//api/mycontroller/customaction
[HttpPost]
public void CustomAction1([FromBody] string data);
[HttpPost]
public void CustomAction2([FromBody] string data);

我尝试将 [Route("api/mycontroller/customaction1")] 应用于 CustomAction1 方法，类似于 CustomAction2 但得到：

Multiple actions were found that match the request: CustomAction1 on type MyProject.WebApiService.MyController CustomAction2 on type MyProject.WebApiService.MyController

Answer 1

确保您配置了属性路由以及默认配置

//....
config.MapHttpAttributeRoutes()

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

如果你想在没有属性路由的情况下做同样的事情，那么你需要显式配置路由

//This one constrains id to be an int
config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{id}",
    defaults: new { action="Get", id = RouteParameter.Optional },
    constraints : new { id = @"\d" }
);
//This one should catch the routes with actions included
config.Routes.MapHttpRoute(
    name: "ActionRoutes",
    routeTemplate: "api/{controller}/{action}"
);