.Net OWIN WebApiConfig 未被调用

Question

我创建了一个空白项目，因此我可以创建一个 angular 应用程序。现在一切就绪，我决定将 Web API 添加到该项目中。我安装了所有必需的软件包并设置了 WebApiConfig.cs 文件。然后我安装了 OWIN 并创建了 OWIN Startup Class。当我运行我的项目时， OWIN Startup Class 被正确调用，但 WebApiConfig 不是。

过去（OWIN 之前）使用 Global.asax 是您触发所有配置 classes 的方式，但因为我正在使用 OWIN 不需要 global.asax 文件，因此我从未创建它。

有人以前遇到过这个并且知道我做错了什么吗？

更新 1

我添加了一个 Global.asax 页面并执行了。我的印象是如果你使用 OWIN，你应该删除你的 Global.asax 文件？

这里是 Global.asax 文件

public class Global : HttpApplication
{

    protected void Application_Start()
    {
        // Add these two lines to initialize Routes and Filters:
        WebApiConfig.Register(GlobalConfiguration.Configuration);
    }
}

和 Startup.Config 文件。

public class StartupConfig
{
    public static UserService<User> UserService { get; set; }
    public static string PublicClientId { get; private set; }
    public static OAuthAuthorizationServerOptions OAuthOptions { get; private set; }

    static StartupConfig()
    {
        UserService = new UserService<User>(new UnitOfWork<DatabaseContext>(), false, true);
        PublicClientId = "self";

        OAuthOptions = new OAuthAuthorizationServerOptions
        {
            TokenEndpointPath = new PathString("/Token"),
            Provider = new OAuthProvider<User>(PublicClientId, UserService),
            AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
            AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
            AllowInsecureHttp = true
        };
    }

    // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
    public void Configuration(IAppBuilder app)
    {
        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        app.UseCookieAuthentication(new CookieAuthenticationOptions());
        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

        // Enable the application to use bearer tokens to authenticate users
        app.UseOAuthBearerTokens(OAuthOptions);

        // Uncomment the following lines to enable logging in with third party login providers
        //app.UseMicrosoftAccountAuthentication(
        //    clientId: "",
        //    clientSecret: "");

        //app.UseTwitterAuthentication(
        //    consumerKey: "vnaJZLYwWFbv7GBlDeMbfwAlD",
        //    consumerSecret: "Q1FE1hEN6prXnK2O9TYihTFyOQmcQmrZJses0rT8Au4OsDQISQ");

        //app.UseFacebookAuthentication(
        //    appId: "",
        //    appSecret: "");

        //app.UseGoogleAuthentication();
    }
}

更新 2

我的启动 class 现在看起来像这样：

public class StartupConfig
{
    public static UserService<User> UserService { get; set; }
    public static string PublicClientId { get; private set; }
    public static OAuthAuthorizationServerOptions OAuthOptions { get; private set; }

    static StartupConfig()
    {
        UserService = new UserService<User>(new UnitOfWork<DatabaseContext>(), false, true);
        PublicClientId = "self";

        OAuthOptions = new OAuthAuthorizationServerOptions
        {
            TokenEndpointPath = new PathString("/Token"),
            Provider = new OAuthProvider<User>(PublicClientId, UserService),
            AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
            AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
            AllowInsecureHttp = true
        };
    }

    // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
    public void Configuration(IAppBuilder app)
    {
        //var config = new HttpConfiguration();

        //// Set up our configuration
        //WebApiConfig.Register(config);

        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        app.UseCookieAuthentication(new CookieAuthenticationOptions());
        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

        // Enable the application to use bearer tokens to authenticate users
        app.UseOAuthBearerTokens(OAuthOptions);

        // Uncomment the following lines to enable logging in with third party login providers
        //app.UseMicrosoftAccountAuthentication(
        //    clientId: "",
        //    clientSecret: "");

        //app.UseTwitterAuthentication(
        //    consumerKey: "vnaJZLYwWFbv7GBlDeMbfwAlD",
        //    consumerSecret: "Q1FE1hEN6prXnK2O9TYihTFyOQmcQmrZJses0rT8Au4OsDQISQ");

        //app.UseFacebookAuthentication(
        //    appId: "",
        //    appSecret: "");

        //app.UseGoogleAuthentication();
    }
}

如果我取消注释 WebApiConfig 行，则启动 class 永远不会执行。知道为什么吗？

Answer 1

当然，如果您使用 Owin，您可能会删除 Global.asax 文件。

在您的 Owin Startup.cs 中，您必须进行 WebApiConfig 注册。

public class Startup 
{
    public void Configuration(IAppBuilder app)
    {
        ...

        HttpConfiguration config = new HttpConfiguration();

        WebApiConfig.Register(config);
        config.Filters.Add(new WebApiAuthorizeAttribute());

        ...

    }
...
}

Answer 2

您需要在启动 class 中调用 app.UseWebApi，传入您要使用的配置。您还需要在那里调用 WebApiConfig 的 Register 方法。这在简化的应用程序中可能看起来如何的示例是：

你可以有一个 OWIN 启动 class 看起来像这样：

// Tell OWIN to start with this
[assembly: OwinStartup(typeof(MyWebApi.Startup))]
namespace MyWebApi
{
    public class Startup
    {
        /// <summary>
        /// This method gets called automatically by OWIN when the application starts, it will pass in the IAppBuilder instance.
        /// The WebApi is registered here and one of the built in shortcuts for using the WebApi is called to initialise it.
        /// </summary>
        public void Configuration(IAppBuilder app)
        {
            var config = new HttpConfiguration();
            WebApiConfig.Register(config);
            app.UseWebApi(config);
        }
    }
}

创建 HttpConfiguration 并将其传递给 WebApiConfig.Register 方法。然后我们使用 app.UseWebApi(config) 方法来设置网络 api。这是System.Web.Http.Owin中的一个辅助方法，你可以通过包含NuGet包Microsoft ASP.NET Web API 2.2 OWIN

来获取它

WebApiConfig class 看起来像这样：

namespace MyWebApi
{
    public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API routes
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
        }
    }
}

.Net OWIN WebApiConfig 未被调用

.Net OWIN WebApiConfig not being called

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