老程序员跪求 Autofac与ASP.NET Areas工程问题

[carylin]

最近有个ASP.NET项目，工程类型为ASP.NET + MVC + WebApi2.2 + OWIN，希望引入Autofac这个Ioc框架。网上查了两三天，无解。现求助于各位高手。

相关代码见后。问题描述：

问题1：
当”备注2“代码使能语句

 var config = new HttpConfiguration();   

时，Areas中的AbcController构造参数可通过Atutofac注入，但HomeAreaRegistration中的路由设置失效。即，对于AbcController，只能通过链接
http://localhost:1607/api/abc/gettest访问，而不是http://localhost:1607/api/home/abc/gettest。

当把备注1代码切换成
var config = GlobalConfiguration.Configuration;
时，AbcController构造参数也可通过Atutofac注入，但HomeAreaRegistration中的路由设置有效，即只能通过http://localhost:1607/api/home/abc/gettest访问。但是，不能通过http://localhost:1607/Account/Login链接访问继承至Controller的AccountController（备注0）的Login方法——而先前的方式是正常的。

概括起来，HttpConfiguration不管是通过new HttpConfiguration新建一个，还是使用GlobalConfiguration.Configuration这个全局，都有各自问题。

问题2：
只要启用了Autofac，在ApiController中，HttpContext.Current.Session恒为null（注意，我已在Global文件中覆写了Init方法）。

以上，何解？
都说Autofac名气大，但不管国内还是国外的相关示例代码，没有一个是Areas工程的，到底支不支持Areas，真是郁闷。


==========================================================
相关代码：

web.config代码片段：

<system.web>
    <authentication mode="Forms">
//****备注0
      <forms loginUrl="~/Account/Login" timeout="2880" slidingExpiration="true" name=".STSASPAUTH" />
      <!--<forms loginUrl="~/Home/Account2/Login" timeout="2880" slidingExpiration="true" name=".STSASPAUTH" />-->
    </authentication>
    <authorization>
      <deny users="?" />
    </authorization>
    <compilation debug="true" targetFramework="4.5.2" />
    <httpRuntime targetFramework="4.5.2" />
  </system.web>

Global.asax.cs:

   public class MvcApplication : System.Web.HttpApplication
    {

        protected void Application_Start()
        { 
            AreaRegistration.RegisterAllAreas();
            // eliminate this line code to let OWIN manage WebApi.
            //GlobalConfiguration.Configure(WebApiConfig.Register);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
      }

        public override void Init() //******备注1
        {
            PostAuthenticateRequest += MvcApplication_PostAuthenticateRequest;
       base.Init();
        }

        private void MvcApplication_PostAuthenticateRequest(object sender, EventArgs e)
        {
            HttpContext.Current.SetSessionStateBehavior(
                SessionStateBehavior.Required);
        }
      // .....
}

Startup.cs:

    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            AutofacConfig.Config(app);
            ConfigureAuth(app);
        }
    }

AutofacConfig.cs:

 class AutofacConfig
    {
        public static IContainer Container
        {
            get; private set;
        }

        public static void Config(IAppBuilder app)
        {
            var builder = new ContainerBuilder();

               //...

            builder.RegisterType<ApplicationDbContext>().AsSelf().As<DbContext>().InstancePerRequest();
            //builder.RegisterType<ApplicationUserManager>().InstancePerRequest();
            builder.Register<ApplicationUserManager>(
                c => ApplicationUserManager.Create2(c.Resolve<IUserStore<UserEntity>>())).InstancePerRequest();
            builder.RegisterType<UserStore<UserEntity>>().As<IUserStore<UserEntity>>();


            // Get your HttpConfiguration. In OWIN, you'll create one
            // rather than using GlobalConfiguration.
            var config = new HttpConfiguration();                            ///******************备注2******************* 
            //var config = GlobalConfiguration.Configuration;
         
            // don't forget this line
            //AreaRegistration.RegisterAllAreas();            
            WebApiConfig.Register(config);

            // for MVC ...
            #region 
         
            // Register your MVC controllers.
            builder.RegisterControllers(typeof(MvcApplication).Assembly);

            // Run other optional steps, like registering model binders,
            // web abstractions, etc., then set the dependency resolver
            // to be Autofac.
            // OPTIONAL: Register model binders that require DI.
            builder.RegisterModelBinders(Assembly.GetExecutingAssembly());
            builder.RegisterModelBinderProvider();

            // OPTIONAL: Register web abstractions like HttpContextBase.
            builder.RegisterModule<AutofacWebTypesModule>();

            // OPTIONAL: Enable property injection in view pages.
            builder.RegisterSource(new ViewRegistrationSource());

            // OPTIONAL: Enable property injection into action filters.
            builder.RegisterFilterProvider();

            // OPTIONAL: Enable action method parameter injection (RARE).
            //builder.InjectActionInvoker();
            #endregion

            // for WebApi2 ...
            #region
            // Register your Web API controllers.
            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());            

            // OPTIONAL: Register the Autofac filter provider.
            builder.RegisterWebApiFilterProvider(config);
           
            #endregion

            var container = builder.Build();
            Container = container;
            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
            config.DependencyResolver = new AutofacWebApiDependencyResolver(container);

            // OWIN MVC and WebApi2 SETUP ...

            // Register the Autofac middleware FIRST, then the Autofac Web API middleware,
            // and finally the standard Web API middleware.
            app.UseAutofacMiddleware(container);
            app.UseAutofacMvc();
            app.UseAutofacWebApi(config);
            app.UseWebApi(config);
        }
    }

Areas/HomeAreaRegistration.cs:

public class HomeAreaRegistration : AreaRegistration 
    {
        public override string AreaName 
        {
            get 
            {
                return "Home";
            }
        }

        public override void RegisterArea(AreaRegistrationContext context) 
        {
            context.Routes.MapHttpRoute(
                name: "Home_WebApiRout",
                routeTemplate: "api/Home/{controller}/{action}/{id}",
                defaults: new { action = "Index", id = RouteParameter.Optional }
            );

            context.MapRoute(
                "Home_default",
                "Home/{controller}/{action}/{id}",
                new { action = "Index", id = UrlParameter.Optional }
            );
        }
    }

Areas/Home/AbcController.cs

  public class AbcController : ApiController
    {
        private ApplicationSignInManager _signInManager;
        private ApplicationUserManager _userManager;
        private ICultureService _cultureSvc;
        private IUserService _userSvc;
        private ILogService _logSvc;

        public AbcController(ICultureService cultureSvc, IUserService userSvc, ILogService logSvc)
        {
            _cultureSvc = cultureSvc;
            _userSvc = userSvc;
            _logSvc = logSvc;
        }

       
        [AllowAnonymous]
        [HttpGet]
          public IHttpActionResult GetTest()
        {
            var s = HttpContext.Current.Session;
            return Ok();
        }
          
    }

AccountController.cs:

public class AccountController : Controller
    {

        // ...

        public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager,
            ICultureService cultureSvc, IUserService userSvc, ILogService logSvc)
        {
            UserManager = userManager;
            SignInManager = signInManager;

            _cultureSvc = cultureSvc;
            _userSvc = userSvc;
            _logSvc = logSvc;
        }

    

        //
        // GET: /Account/Login
        [AllowAnonymous]       
        public async Task<ActionResult> Login(string returnUrl)
        {
            ViewBag.ReturnUrl = returnUrl;

            await _cultureSvc.DeduceCultureNameAsync();

            return View();
        }

        //...
    }

[修改一下昵称]

areas里面注册的路由时加上namespaces试试 public override void RegisterArea(AreaRegistrationContext context) { context.Routes.MapHttpRoute( name: "Home_WebApiRout", routeTemplate: "api/Home/{controller}/{action}/{id}", defaults: new { action = "Index", id = RouteParameter.Optional }， namespaces:new string[]{"xxx.xxx.xxx"} ); context.MapRoute( "Home_default", "Home/{controller}/{action}/{id}", new { action = "Index", id = UrlParameter.Optional }, namespaces:new string[]{"xxx.xxx.xxx"} ); }

[娃都会打酱油了]

Autofac.Mvc

[EnForGrass]

HomeAreaRegistration 注册加上namespaces试试, context.MapRoute( name: "Home_WebApiRout", routeTemplate: "api/Home/{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = RouteParameter.Optional }, namespaces: new[] { "XXX.YYY.Controllers" } ); 另外默认的route不应该写到这里

[winner2050]

幸亏我用企业库，一步就过了。

[EnForGrass]

好像ASP.NET MVC 4 Areas不支持WebAPI 其实我觉得你没必要建area，你在mvc里面随便建一个子文件夹放api，注册api就行了 参考http://stackoverflow.com/questions/11074117/asp-net-webapi-area-support

[yzf86211861]

好像很厉害的样子 看看 大牛怎么上天

[carylin]

context.Routes.MapHttpRoute方法没有namespaces参数，只有constraints。
另外，我用的是MVC5+Web API2.2，areas里可以支持webapi

[EnForGrass]

感觉和这个问题类似 http://stackoverflow.com/questions/29125412/web-api-2-area-routes

[carylin]

这个问题是路由冲突和匹配问题。我现在遇到的，个人推测还是autofac整合问题，毕竟没有引入autofac时是正常的。

[carylin]

还是没有完美解决。怎么不见各路大神赐教？