将 Web API 添加到现有 MVC Web 应用程序后出现 404 错误 [英] 404 error after adding Web API to an existing MVC Web Application

问题描述

这里有一个很好的问题: 如何将 Web API 添加到现有的 ASP.NET MVC 4 Web 应用程序项目?

不幸的是，这还不足以解决我的问题.我已经试过两次以确保我没有做错任何事.我右键单击控制器"并添加了项目Web API 2 Controller with actions, using Entity Framework"，在那里我选择了我的模型类和数据库上下文.一切顺利...但仍然...每次我尝试访问/api/Rest 时，我都会收到 404 错误(我的控制器的名称是 RestController).

Unfortunately, it wasn't enough to solve my problem. I've tried twice to be sure I haven't done anything wrong. I right clicked on "Controllers" and added the item "Web API 2 Controller with actions, using Entity Framework" where I selected my model class and db context. Everything went fine... but still... everytime I've tried to access /api/Rest I was getting a 404 error (The name of my Controller is RestController).

推荐答案

成功了！！！我不想相信，但你猜怎么着，问题与 Global.asax 路由订单有关.

It's working!!! I didn't want to believe, but guess what, the problem was related with the Global.asax routing order.

虽然它不适用于:

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    GlobalConfiguration.Configure(WebApiConfig.Register); //I AM THE 4th
    BundleConfig.RegisterBundles(BundleTable.Bundles);
}      

它适用于:

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    GlobalConfiguration.Configure(WebApiConfig.Register); //I AM THE 2nd
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);
}      

疯了，我知道.

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