为ASP.NET MVC及WebApi添加路由优先级

4、把路由注册处理方法添加到Configuration类中

public static Configuration RegisterRoutePriority(this Configuration config) 
{ 
  var typesSoFar = new List<Type>(); 
  var assemblies = GetReferencedAssemblies(); 
  foreach (Assembly assembly in assemblies) 
  { 
    var types = assembly.GetTypes().Where(t => typeof(IRouteRegister).IsAssignableFrom(t) && !t.IsAbstract && !t.IsInterface); 
    typesSoFar.AddRange(types); 
  } 
 
  var context = new RegistrationContext(); 
  foreach (var type in typesSoFar) 
  { 
    var obj = (IRouteRegister)Activator.CreateInstance(type); 
    obj.Register(context); 
  } 
 
  foreach (var route in context.HttpRoutes.OrderByDescending(x => x.Priority)) 
    GlobalConfiguration.Configuration.Routes.MapHttpRoute(route.Name, route.RouteTemplate, route.Defaults, route.Constraints, route.Handler); 
 
  foreach (var route in context.Routes.OrderByDescending(x => x.Priority)) 
    RouteTable.Routes.Add(route.Name, route); 
 
  return config; 
} 
 
private static IEnumerable<Assembly> GetReferencedAssemblies() 
{ 
  var assemblies = BuildManager.GetReferencedAssemblies(); 
  foreach (Assembly assembly in assemblies) 
    yield return assembly; 
} 
这样一来就大功告成，使用时只需要在Global.asax.cs文件中修改原注册入口为

public class MvcApplication : System.Web.HttpApplication 
{ 
  protected void Application_Start() 
  { 
    WebApiConfig.Register(GlobalConfiguration.Configuration); 
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); 
    RouteConfig.RegisterRoutes(RouteTable.Routes); 
 
    Configuration.Instance() 
      .RegisterComponents() 
      .RegisterRoutePriority(); //注册自定义路由 
  } 
} 
在每个项目中使用只需要要继承自定义路由注册接口IRouteRegister，例如：

public class Registration : IRouteRegister 
{ 
  public void Register(RegistrationContext context) 
  { 
    //注册后端管理登录路由 
    context.MapRoute( 
     name: "Admin_Login", 
     url: "Admin/login", 
     defaults: new { area = "Admin", controller = "Account", action = "Login", id = UrlParameter.Optional }, 
     namespaces: new string[] { "Wenku.Admin.Controllers" }, 
     priority: 11 
   ); 
 
    //注册后端管理页面默认路由 
    context.MapRoute( 
      name: "Admin_default", 
      url: "Admin/{controller}/{action}/{id}", 
      defaults: new { area = "Admin", controller = "Home", action = "Index", id = UrlParameter.Optional }, 
      namespaces: new string[] { "Wenku.Admin.Controllers" }, 
      priority: 10 
    ); 
 
    //注册手机访问WebApi路由 
    context.MapHttpRoute( 
      name: "Mobile_Api", 
      routeTemplate: "api/mobile/{controller}/{action}/{id}", 
      defaults: new 
      { 
        area = "mobile", 
        action = RouteParameter.Optional, 
        id = RouteParameter.Optional, 
        namespaceName = new string[] { "Wenku.Mobile.Http" } 
      }, 
      constraints: new { action = new StartWithConstraint() }, 
      priority: 0 
    ); 
  } 
} 

								 
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