AutoFac mvc和WebAPI 注册Service (接口和实现)

1、准备组件版本：Autofac 3.5.0 Autofac.Integration.Mvc 3.3.0.0 (Install-package Autofac.Mvc 相应版本) Autofac.Integration.WebApi 4.0.0.0 (Install-package Autofac.WebApi 相应版本)

　　***install-package autofac.webapi2 (注意：您的项目中如果使用的是webapi2，此处必须为webapi2而不是webapi,否则在运行时将出现“重写成员“Autofac.Integration.WebApi.AutofacWebApiDependencyResolver.BeginScope()”时违反了继承安全性规则。重写方法的安全可访问性必须与所重写方法的安全可访问性匹配。”错误。)

2、Global.asax 中代码：

 protected void Application_Start()
   {
            AreaRegistration.RegisterAllAreas();
            GlobalConfiguration.Configure(WebApiConfig.Register);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);

            // AutoFac 注入初始化
            AutoFacBootStrapper.CoreAutoFacInit();
      }

3、实现注入类: AutoFacBootStrapper 及实现批量service注入

 public class AutoFacBootStrapper
    {
        public static void CoreAutoFacInit()
        {
           var builder = new ContainerBuilder();
            HttpConfiguration config = GlobalConfiguration.Configuration;
            //注册所有的Controllers
            builder.RegisterControllers(Assembly.GetExecutingAssembly()).PropertiesAutowired();
            #region 可正常 用
            var baseType = typeof(IDependency);
            var assemblys = AppDomain.CurrentDomain.GetAssemblies().ToList();
            var allServices = assemblys.SelectMany(s => s.GetTypes()).Where(p => baseType.IsAssignableFrom(p) && p != baseType);
            builder.RegisterAssemblyTypes(assemblys.ToArray()).Where(t => baseType.IsAssignableFrom(t) && t != baseType)
                .AsImplementedInterfaces().PropertiesAutowired().InstancePerLifetimeScope();
            //注册所有的ApiControllers
            builder.RegisterApiControllers(Assembly.GetExecutingAssembly()).PropertiesAutowired();
            //autofac 注册依赖
            IContainer container = builder.Build();
            // webApi部分注册
            config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
            #endregion 可正常用
        }

    }

4、接口部分需继承 IDpendncy，该类无实现类仅为批量注册提供标示

 public interface IDependency
    {

    }

5、IService 和Servicep 实现

 public interface ICustomerService:IDependency
    {

          string GetCustomerName();
        

    }

 public class CustomerService: ICustomerService
    {
        /// <summary>
        /// 获取客户信息
        /// </summary>
        /// <returns></returns>
        public string GetCustomerName()
        {
            return "WebAPI_Success";
        }
    }

6、Controller 调用注入类和ApiController 调用注入类

  public class HomeController : Controller
    {

        public ICustomerService _customerService { get; set; }
        public ActionResult Index()
        {
            ViewBag.Title = "Home Page";

            return View();
        }
    }

  public class CustController : ApiController
    {

        public ICustomerService _customerService { get; set; }
        // GET: api/Cust
        public IEnumerable<string> Get()
        {
            return new string[] { "value1", "value2" };
        }

        // GET: api/Cust/5
        public string Get(int id)
        {
            return "value";
        }

        // POST: api/Cust
        public void Post([FromBody]string value)
        {
        }
}