如何实现“控制器+动作+参数”路由的.NET WebAPI？

using System.Web.Http;

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Web API 路由
        config.MapHttpAttributeRoutes();

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

[RoutePrefix("api/products")]
public class ProductsController : ApiController
{
    [HttpGet]
    [Route("{id}")]
    public IHttpActionResult Get(int id)
    {
        // 处理获取产品的逻辑
        return Ok(new { Id = id, Name = "Sample Product" });
    }

    [HttpPost]
    public IHttpActionResult Post([FromBody] Product product)
    {
        // 处理创建产品的逻辑
        return Created($"api/products/{product.Id}", product);
    }
}

public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
}