Question

我刚刚在我的WebAPI项目上更新（从v3.x）到最新版本的AttributeRouting，它刚刚开始产生我以前从未见过的错误。

现在无论何时对API进行调用，我都会收到如下错误：

System.InvalidOperationException: The constraint entry 'inboundHttpMethod' on the route with route template 'my/path' must have a string value or be of a type which implements 'IHttpRouteConstraint'.
   at System.Web.Http.Routing.HttpRoute.ProcessConstraint(HttpRequestMessage request, Object constraint, String parameterName, HttpRouteValueDictionary values, HttpRouteDirection routeDirection)
   at System.Web.Http.Routing.HttpRoute.ProcessConstraints(HttpRequestMessage request, HttpRouteValueDictionary values, HttpRouteDirection routeDirection)
   at System.Web.Http.Routing.HttpRoute.GetRouteData(String virtualPathRoot, HttpRequestMessage request)
   at AttributeRouting.Web.Http.Framework.HttpAttributeRoute.GetRouteData(String virtualPathRoot, HttpRequestMessage request)
   at System.Web.Http.WebHost.Routing.HttpWebRoute.GetRouteData(HttpContextBase httpContext)
   at System.Web.Routing.RouteCollection.GetRouteData(HttpContextBase httpContext)
   at System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context)
   at System.Web.Routing.UrlRoutingModule.OnApplicationPostResolveRequestCache(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

几个月来它一直没有问题。

非文档详细信息有任何用法更改。我的配置文件看起来是正确的。

出了什么问题？我找不到其他人举报此事。

Answer 1

绝对在内存托管类型问题。最近，我在更新到MVC 5后遇到了同样的问题。我查看了各种帖子，实际上发现了一个最终帮助我的帖子。以下是我解决这个问题的方法。

安装属性路由库后，必须在global.ascx文件中包含以下内容。

AttributeRoutingHttpConfig.RegisterRoutes(GlobalConfiguration.Configuration.Routes);

在AttributeRoutingHttpConfig类中，替换以下代码：

routes.MapHttpAttributeRoutes();

与

routes.MapHttpAttributeRoutes(cfg =>
{
            cfg.InMemory = true;
            cfg.AutoGenerateRouteNames = true;
            cfg.AddRoutesFromAssemblyOf<ANY_API_Controller>();
        });

在这里，ANY_API_Controller引用你项目中的任何apicontroller类。

AttributeRouting WebAPI现在产生错误

1 个答案: