WebActivatorEx 注入时的使用

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WebActivator类库提供了3种功能，允许分别在Application_Start初始化之前，之后以及ShutDown的时候，分别执行指定的代码，并且允许多次指定。示例如下：

[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(A.InitClass1), "PreStart")]

[assembly: WebActivatorEx.PostApplicationStartMethod(typeof(A.PostClass1), "PostStart")]

[assembly: WebActivatorEx.ApplicationShutdownMethod(typeof(A.ShutDownClass1), "ShutDown")]

下面提供一个项目中的使用示例：

using System.Linq;

using System.Web.Mvc;

using Microsoft.Practices.Unity.Mvc;

[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(TestPrj.Common.PreUnityActivator), "Start")]

namespace TestPrj.Common

{

    public static class PreUnityActivator

    {

        /// <summary>Integrates Unity when the application starts.</summary>

        public static void Start()

        {

            var container = UnityConfig.GetConfiguredContainer();

            FilterProviders.Providers.Remove(FilterProviders.Providers.OfType<FilterAttributeFilterProvider>().First());

            FilterProviders.Providers.Add(new UnityFilterAttributeFilterProvider(container));

            DependencyResolver.SetResolver(new UnityDependencyResolver(container));

            // if you want to use PerRequestLifetimeManager

            // Microsoft.Web.Infrastructure.DynamicModuleHelper.DynamicModuleUtility.RegisterModule(typeof(UnityPerRequestHttpModule));

        }

    }

}

using System;

using Microsoft.Practices.Unity;

using Microsoft.Practices.Unity.Configuration;

using TestPrj.DAL;

using TestPrj.Modules;

namespace TestPrj.Web

{

    /// <summary>

    /// Main container.

    /// </summary>

    public class UnityConfig

    {

        private static Lazy<IUnityContainer> container = new Lazy<IUnityContainer>(() =>

        {

            var container = new UnityContainer();

            RegisterTypes(container);

            return container;

        });

        public static IUnityContainer GetConfiguredContainer()

        {

            return container.Value;

        }

        public static void RegisterTypes(IUnityContainer container)

        {

            // NOTE: To load from web.config uncomment the line below. Make sure to add a Microsoft.Practices.Unity.Configuration to the using statements.

            // container.LoadConfiguration();

            // Register your types here

            container.RegisterType<IPreUnitOfWork, ETravelEntities>(new PerResolveLifetimeManager());

            // Register services.

            container.RegisterType<IConfigService, ConfigService>();

        }

    }

}