• Unity


    最新源代码:https://github.com/unitycontainer/unity

    Unity是轻量级、可扩展的依赖注入容器,用于对框架的解耦和增强可扩展性。Unity生于微软。想了解IOC的前世今生可以看下Spring.NET。

    一、MVC使用Unity

    1.使用

    先不管Unity,新建类库,随便写几个Service

    public interface IArticleService
        {
            string GetArticle();
        }
    
    ------
        public class ArticleService:IArticleService
        {
            public string GetArticle()
            {
                return "sso";
            }
        }

    首先在MVC项目上安装NuGet包:Unity.Mvc

    安装完成后会在MVC项目的App_Start文件中看到自动加入了两个文件:UnityConfig.cs、UnityMvcActivator.cs;后者的作用可以看前文:动态注册Httpmodule

     这个时候我们注册类型到IOC容器

    using System;
    using Practice.IocUnity.Service;
    using Practice.IocUnity.Service.Interface;
    using Unity;
    using Unity.Lifetime;
    
    namespace Practice.IocUnity.Web
    {
        /// <summary>
        /// Specifies the Unity configuration for the main container.
        /// </summary>
        public static class UnityConfig
        {
            #region Unity Container
            private static Lazy<IUnityContainer> container =
              new Lazy<IUnityContainer>(() =>
              {
                  var container = new UnityContainer();
                  RegisterTypes(container);
                  return container;
              });
    
            /// <summary>
            /// Configured Unity Container.
            /// </summary>
            public static IUnityContainer Container => 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 Unity.Configuration to the using statements.
                // container.LoadConfiguration();使用配置文件
    
                // TODO: Register your type's mappings here.
                container.RegisterType<IArticleService, ArticleService>(new ContainerControlledLifetimeManager());
    
    
    
            }
        }
    }

    2、单例模式

    上面我们添加了一行代码:container.RegisterType<IArticleService, ArticleService>(new ContainerControlledLifetimeManager());这句的作用是把IArticleService和ArticleService的映射注入容器,new ContainerControlledLifetimeManager()参数是通过lifetime管理,单例模式

    如果不需要也可以使用:container.RegisterType<IArticleService, ArticleService>();即可

    另外Unity还提供通过配置文件的方式进行:

    <configSections>
        <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,
                 Microsoft.Practices.Unity.Configuration" />
      </configSections>
      <unity>
        <containers>
          <container name="defaultContainer">
            <register type="Practice.IocUnity.Service.Interface.IArticleService, Practice.IocUnity.Service.Interface" mapTo="Practice.IocUnity.Service.ArticleService, Practice.IocUnity.Service"/>
    <lifetime type="singleton" />
          </container>
        </containers>
      </unity>
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  • 原文地址:https://www.cnblogs.com/xmai/p/6802081.html
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