将 web api 路由添加到现有网站无法修改全局 asax

Question

我有一个 web api 项目，我可以在本地运行它，但是当我将 dll 发布到网站中的 bin 文件夹时，并没有采用路由配置。我一直无法修改或替换全局 asax，因为它有自己的实现。哪里是设置 mi web api 路由配置的最佳位置，我该如何使用 httpmodule？

public class WebApiApplication : System.Web.HttpApplication        
{
      protected void Application_Start()
        {

            AreaRegistration.RegisterAllAreas();
            WebApiConfig.Register(GlobalConfiguration.Configuration);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
        }
    }

更新：

我添加了一个httpmodule，并没有映射路由，正在发送http 404：

public void Init(HttpApplication context) {
            try
            {
                AreaRegistration.RegisterAllAreas();

                var routes = RouteTable.Routes;

                // Controllers with Actions
                // To handle routes like '/api/controller/route'
                routes.MapHttpRoute(
                    name: "ControllerActionAndId",
                    routeTemplate: "api/{controller}/{action}/{id}",
                    defaults: new { id = RouteParameter.Optional },
                    constraints: new { id = @"^\d+$" }
                );

                // Controllers with Actions
                // To handle routes like '/api/controller/route'
                routes.MapHttpRoute(
                    name: "ControllerAndAction",
                    routeTemplate: "api/{controller}/{action}"
                );

                // Controller with ID
                // To handle routes like '/api/controller/1'
                routes.MapHttpRoute(
                    name: "ControllerAndId",
                    routeTemplate: "api/{controller}/{id}",
                    defaults: null,
                    constraints: new { id = @"^\d+$" } // Only integers 
                );

                // Controller Only
                // To handle routes like '/api/controller'
                routes.MapHttpRoute(
                    name: "ControllerOnly",
                    routeTemplate: "api/{controller}"
                );

            }
            catch { }
        } 

Answer 1

如果你不能改变全局assax，你能改变webconfig吗？

使用 httpmodule 你会得到类似的东西

  <system.webserver>
       <modules>
           <add name="WebApiStartModule" type="myproject.WebApiStartModule, assembly"/>
        </modules>
  <system.webserver>


  public class WebApiStartModule : IHttpModule
  {

       public void Init(HttpApplicationContext) {

             var routes = RouteTable.Routes

             routes.Clear()
             //initialize routing here
       }
  }