mvc中使用Unity

在mvc中使用Unity

• 一、在Nuget管理器中下载“Unity“

• 二、在根目录的App_Start文件夹中添加三个cs文件

创建UnityConfig.cs

//添加两个命名空间using Microsoft.Practices.Unity;using Microsoft.Practices.Unity.Configuration;//这是代码块     /// <summary>    /// Specifies the Unity configuration for the main container.    /// </summary>    public class UnityConfig    {        #region Unity Container        private static Lazy<IUnityContainer> container = new Lazy<IUnityContainer>(() =>        {            var container = new UnityContainer();            RegisterTypes(container);            return container;        });        /// <summary>        /// Gets the configured Unity container.        /// </summary>        public static IUnityContainer GetConfiguredContainer()        {            return container.Value;        }        #endregion        /// <summary>Registers the type mappings with the Unity container.</summary>        /// <param name="container">The unity container to configure.</param>        /// <remarks>There is no need to register concrete types such as controllers or API controllers (unless you want to         /// change the defaults), as Unity allows resolving a concrete type even if it was not previously registered.</remarks>        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();            // TODO: Register your types here            // container.RegisterType<IProductRepository, ProductRepository>();        }    }

创建UnityDependencyResolver.cs

using System.Web.Mvc;    /// <summary>    /// 使用unity必须实现的两个接口之一    /// 它的作用我也不知道    /// </summary>    public class UnityDependencyResolver : IDependencyResolver    {        IUnityContainer container;        public UnityDependencyResolver(IUnityContainer container)        {            this.container = container;        }        public object GetService(Type serviceType)        {            try            {                return container.Resolve(serviceType);            }            catch            {                return null;            }        }        public IEnumerable<object> GetServices(Type serviceType)        {            try            {                return container.ResolveAll(serviceType);            }            catch            {                return new List<object>();            }        }    }

添加UnityWebActivator.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using Microsoft.Practices.Unity.Mvc;[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(WebApp.App_Start.UnityWebActivator), "Start")][assembly: WebActivatorEx.ApplicationShutdownMethod(typeof(WebApp.App_Start.UnityWebActivator), "Shutdown")]namespace 你的命名空间{    public class UnityWebActivator    {        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));            // TODO: Uncomment if you want to use PerRequestLifetimeManager            // Microsoft.Web.Infrastructure.DynamicModuleHelper.DynamicModuleUtility.RegisterModule(typeof(UnityPerRequestHttpModule));        }        /// <summary>Disposes the Unity container when the application is shut down.</summary>        public static void Shutdown()        {            var container = UnityConfig.GetConfiguredContainer();            container.Dispose();        }    }}

• 三、根目录的Global.asax中注册一下

    public class MvcApplication : System.Web.HttpApplication    {        protected void Application_Start()        {            AreaRegistration.RegisterAllAreas();            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);            RouteConfig.RegisterRoutes(RouteTable.Routes);            BundleConfig.RegisterBundles(BundleTable.Bundles);            //这是unity，上面四行不要去动。            IUnityContainer container = GetUnityContainer();            DependencyResolver.SetResolver(new UnityDependencyResolver(container));        }        /// <summary>        /// 这是unity的注册        /// </summary>        /// <returns></returns>        private IUnityContainer GetUnityContainer()        {            IUnityContainer container = new UnityContainer()                .RegisterType<IControllerActivator, CustomControllerActivator>();            //配置了多少就写多少            //container.LoadConfiguration("container name的值")            container.LoadConfiguration("UnityStudentServceBLL");            //container.LoadConfiguration("UnityPayServiceBLL");            //container.LoadConfiguration("UnityTeacherServiceBLL");            //container.LoadConfiguration("UnityGradesServiceBLL");            return container;        }    }

• 四、修改配置文件
  在根目录中找到Web.config,修改配置信息

<!--这个configSections节点必须是第一个否则会出错--><configSections>        <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration" />  </configSections><unity>    <containers>    <!--container可以有多个-->      <container name="随便起">        <register type="命名空间.接口文件名（不要扩展名）, 程序集（一般和命名空间一样）" mapTo="命名空间.实现接口的类的名称（不要扩展名）, 程序集（一般和命名空间一样）" />      </container>      <!--比如这样-->      <container name="UnityStudentServceBLL">        <register type="MySchool.IBLL.IStudentService, MySchool.IBLL" mapTo="MySchool.BLL.StudentService, MySchool.BLL" />      </container>    </containers>  </unity>

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• 五、使用

    public class BaseController : Controller    {        [Dependency]        public IStudentService StudentService { get; set; }        //[Dependency]        //public 配置文件中注册过的接口 起个牛13名 { get; set; }        //        //    }

• 六、结束
  搞完之后两个类就可以解耦了，不需要对业务类new来new去了。