Question

我在常规路由的同时启用了MVC属性路由。每次运行应用程序时都会出现此错误。

类型的内联约束解析器   ＆＃39; DefaultInlineConstraintResolver＆＃39;无法解决以下问题   内联约束：＆＃39; string＆＃39;。描述：未处理的异常   在执行当前Web请求期间发生。请   查看堆栈跟踪以获取有关错误和位置的更多信息   它起源于代码。

异常详细信息：System.InvalidOperationException：内联   类型＆＃39; DefaultInlineConstraintResolver＆＃39;的约束解析器是   无法解决以下内联约束：＆＃39; string＆＃39;。

这是堆栈跟踪：

[InvalidOperationException：类型的内联约束解析器   ＆＃39; DefaultInlineConstraintResolver＆＃39;无法解决以下问题   内联约束：＆＃39; string＆＃39;。]
  System.Web.Mvc.Routing.InlineRouteTemplateParser.GetInlineConstraint（集团   constraintGroup，Boolean isOptional，IInlineConstraintResolver   constraintResolver）+389
  System.Web.Mvc.Routing.InlineRouteTemplateParser.ParseRouteTemplate（字符串   routeTemplate，IDictionary 2 defaults, IDictionary 2个约束，   IInlineConstraintResolver constraintResolver）+488
  System.Web.Mvc.Routing.DirectRouteFactoryContext.CreateBuilder（字符串   template，IInlineConstraintResolver constraintResolver）+308
  System.Web.Mvc.Routing.DirectRouteFactoryContext.CreateBuilderInternal（字符串   模板）+48
  System.Web.Mvc.Routing.DirectRouteFactoryContext.CreateBuilder（字符串   模板）+44
  System.Web.Mvc.RouteAttribute.System.Web.Mvc.Routing.IDirectRouteFactory.CreateRoute（DirectRouteFactoryContext   上下文）+80
  System.Web.Mvc.Routing.DefaultDirectRouteProvider.CreateRouteEntry（字符串   areaPrefix，String controllerPrefix，IDirectRouteFactory factory，   IReadOnlyCollection 1 actions, IInlineConstraintResolver constraintResolver, Boolean targetIsAction) +115 System.Web.Mvc.Routing.DefaultDirectRouteProvider.CreateRouteEntries(String areaPrefix, String controllerPrefix, IReadOnlyCollection 1个工厂，   IReadOnlyCollection 1 actions, IInlineConstraintResolver constraintResolver, Boolean targetIsAction) +155 System.Web.Mvc.Routing.DefaultDirectRouteProvider.GetActionDirectRoutes(ActionDescriptor actionDescriptor, IReadOnlyList 1个工厂，IInlineConstraintResolver   constraintResolver）+188
  System.Web.Mvc.Routing.DefaultDirectRouteProvider.GetDirectRoutes（ControllerDescriptor   controllerDescriptor，IReadOnlyList 1 actionDescriptors, IInlineConstraintResolver constraintResolver) +245 System.Web.Mvc.Routing.AttributeRoutingMapper.AddRouteEntries(SubRouteCollection collector, IEnumerable 1个controllerTypes，IInlineConstraintResolver   constraintResolver，IDirectRouteProvider directRouteProvider）+234
  System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes（RouteCollection   routes，IEnumerable`1 controllerTypes，IInlineConstraintResolver   constraintResolver，IDirectRouteProvider directRouteProvider）+333
  System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes（RouteCollection   routes，IInlineConstraintResolver constraintResolver，   IDirectRouteProvider directRouteProvider）+398
  System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes（RouteCollection   routes，IInlineConstraintResolver constraintResolver）+192
  System.Web.Mvc.RouteCollectionAttributeRoutingExtensions.MapMvcAttributeRoutes（RouteCollection   路线）+123
  SocialManager.RouteConfig.RegisterRoutes（RouteCollection路由）中   c：\ Users \ Naser Dostdar \ Documents \ Visual Studio   2013 \项目\ SocialManager \ SocialManager \ App_Start \ RouteConfig.cs：16   C：\ Users \ Naser中的SocialManager.MvcApplication.Application_Start（）   Dostdar \ Documents \ Visual Studio   2013 \项目\ SocialManager \ SocialManager \ Global.asax.cs中：18

[HttpException（0x80004005）：类型的内联约束解析器   ＆＃39; DefaultInlineConstraintResolver＆＃39;无法解决以下问题   内联约束：＆＃39; string＆＃39;。]
  System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode（HttpContext的   上下文，HttpApplication app）+9942821
  System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS（IntPtr的   appContext，HttpContext上下文，MethodInfo []处理程序）+118
  System.Web.HttpApplication.InitSpecial（HttpApplicationState状态，   MethodInfo [] handlers，IntPtr appContext，HttpContext context）+172
  System.Web.HttpApplicationFactory.GetSpecialApplicationInstance（IntPtr的   appContext，HttpContext context）+352
  System.Web.Hosting.PipelineRuntime.InitializeApplication（IntPtr的   appContext）+296

[HttpException（0x80004005）：类型的内联约束解析器   ＆＃39; DefaultInlineConstraintResolver＆＃39;无法解决以下问题   内联约束：＆＃39; string＆＃39;。]
  System.Web.HttpRuntime.FirstRequestInit（HttpContext context）+9924184   System.Web.HttpRuntime.EnsureFirstRequestInit（HttpContext context）   +101 System.Web.HttpRuntime.ProcessRequestNotificationPrivate（IIS7WorkerRequest）   wr，HttpContext context）+261

以下是我的Route.Config文件的样子：

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapMvcAttributeRoutes();

        routes.MapRoute(null, "Page{page}",
        new
        {
            controller = "Blogs",
            action = "Index",
            category =
                (string)null
        },
        new { page = @"\d+" }
        );
        routes.MapRoute(null,
        "{category}",
        new { controller = "Blogs", action = "Edit", page = 1 }
        );
        routes.MapRoute(null,
        "{category}/Page{page}",
        new { controller = "Blogs", action = "List" },
        new { page = @"\d+" }
        );
        routes.MapRoute(null, "{controller}/{action}");


        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}

P.S：我还没有在我的项目中定义任何MVC属性路由，只是想测试启用MVC属性路由功能。

Web API版本：2.2

Answer 1

某处您已定义了属性路由。没有其他任何东西会导致此错误。你已经完成了这项工作，你已经使用string作为路线约束。例如：

[Route("{foo:string}")]

但是，string不是有效的路由约束，因为路径中的所有都是字符串。长和短，找到您定义的包含:string的路径属性并删除它。

如何摆脱MVCAttribute路由引起的错误？

1 个答案: