ASP.NET核2中的扩展路由

Question

我目前正在迁移一个旧的网站从ASP.NET与.htaccess到ASP.NET核心2，我面临一些问题的路由。这是一个大的网站，几乎有30个链接，我必须保持与旧的网址结构。因此，我尝试扩展Startup类的app.UseMvc(route)函数。

这是我的代码：

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseBrowserLink();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }

        app.UseStaticFiles();

        app.UseMvc(routes => new CustomRouting("mydomain.com",app).GetRouts());
    }
}

以下是我的其他课程：

public class CustomRouting
{
    string domain;
    IApplicationBuilder app;

    public CustomRouting(string domain, IApplicationBuilder app)
    {
        this.domain = domain;
        this.app = app;
    }

    public IRouteBuilder GetRouts()
    {
        IRouteBuilder route = new RouteBuilder(app);
        switch(domain)
        {
            case "mydomain.com":
                route = new DeRouting(app).GetRoutes();
                break;
            default:
                route = new DeRouting(app).GetRoutes();
                break;
        }
        return route;
    }
}

public class DeRouting
{
    IApplicationBuilder app;
    public DeRouting(IApplicationBuilder app)
    {
        this.app = app;
    }

    public IRouteBuilder GetRoutes()
    {
        IRouteBuilder routes = new RouteBuilder(app);
        routes.MapRoute("default", "{controller=Home}/{action=Index}/{id?}");
        //here should come more
        return routes;
    }
}

目前，我得到以下错误：

Microsoft.AspNetCore.Routing.RouteCreationException：‘必须在IRouteBuilder上设置默认处理程序。’

如何为这些规则创建路由集合？将有更多类型的这些url将处理多个域。

Answer 1

public class CustomRouting
{
    string domain;
    IApplicationBuilder app;
    IRouteBuilder routeBuilder;

    public CustomRouting(string domain, IApplicationBuilder app, IRouteBuilder routes)
    {
        this.domain = domain;
        this.app = app;
        this.routeBuilder = routes;
    }

    public IRouteBuilder GetRouts()
    {
        switch(domain)
        {
            case "mydomain.com":
                route = new DeRouting(app, routeBuilder).GetRoutes();
                break;
            default:
                route = new DeRouting(app, routeBuilder).GetRoutes();
                break;
        }

        return route;
    }
}

public class DeRouting
{
    IApplicationBuilder app;
    IRouteBuilder routeBuilder;

    public DeRouting(IApplicationBuilder app, IRouteBuilder routes)
    {
        this.app = app;
        this.routeBuilder = routes;
    }

    public IRouteBuilder GetRoutes()
    {
        routeBuilder.MapRoute("default", "{controller=Home}/{action=Index}/{id?}");
        //here should come more
        return routes;
    }
}

// StartUp.cs
app.UseMvc(routes =>
{
    new RouteManager(app,routes).GetRoutes();
});