autofac依赖注入

C# Asp.net autofac依赖注入

service类创建实体，接口，具体实现类

public class Product
   {
       public int ProductID { get; set; }
 
       public string Name { get; set; }
 
       public string Description { get; set; }
 
       public decimal Price { get; set; }
 
   }

public interface IProductService
   {
       IEnumerable<Product> Products { get; }
   }

public class ProductService:IProductService
    {
        public IEnumerable<Product> Products
        {
            get
            {
                //仅作演示
                return new List<Product> {
                    new Product {ProductID = 1, Name = "Football", Description = "Football description", Price = 25},
                    new Product {ProductID = 2, Name = "Stuff board", Description = "Stuff board description", Price = 179 },
                    new Product {ProductID = 3, Name = "Running shoes", Description = "Running shoes description", Price = 95 },
                    new Product {ProductID = 4, Name = "Basketball", Description = "Basketball description", Price = 125},
                    new Product {ProductID = 5, Name = "Volleyball", Description = "Volleyball description", Price = 59 },
                    new Product {ProductID = 6, Name = "Basketball shoes", Description = "Basketball shoes description", Price = 195 },
                    new Product {ProductID = 7, Name = "Volleyball shoes", Description = "Volleyball shoes description", Price = 205},
                    new Product {ProductID = 8, Name = "Swimming clothes", Description = "Swimming clothes description", Price = 199 },
                    new Product {ProductID = 9, Name = "Climbing boot", Description = "Climbing boot description", Price = 900 },
                    new Product {ProductID = 10, Name = "Football", Description = "Football description", Price = 25},
                    new Product {ProductID = 11, Name = "Stuff board", Description = "Stuff board description", Price = 179 },
                    new Product {ProductID = 12, Name = "Running shoes", Description = "Running shoes description", Price = 95 },
                    new Product {ProductID = 13, Name = "Basketball", Description = "Basketball description", Price = 125},
                    new Product {ProductID = 14, Name = "Volleyball", Description = "Volleyball description", Price = 59 },
                    new Product {ProductID = 15, Name = "Basketball shoes", Description = "Basketball shoes description", Price = 195 },
                    new Product {ProductID = 16, Name = "Volleyball shoes", Description = "Volleyball shoes description", Price = 205},
                    new Product {ProductID = 17, Name = "Swimming clothes", Description = "Swimming clothes description", Price = 199 },
                    new Product {ProductID = 18, Name = "Climbing boot", Description = "Climbing boot description", Price = 900 }
                };
            }
        }
    }

mvc 引用中添加autofac mvc5引用，再App_Start里面添加AutofacConfig.cs配置文件

public static class AutoFacConfig
   {

       public static void Initialize()
       {
           //初始化容器
           var builder = new ContainerBuilder();

           //注册每个对象实例
           var container = RegisterServices(builder);

           DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
       }

       private static IContainer RegisterServices(ContainerBuilder builder)
       {
           //注册controller
           builder.RegisterControllers(typeof(MvcApplication).Assembly);
           builder.RegisterInstance(new ProductService()).As<IProductService>();

           return builder.Build();
       }
   }

Application_Start初始化

protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
 
            AutoFacConfig.Initialize();
        }

添加product控制器

控制器中index返回整个list

先往控制器中添加传输层数据私有字段

private IProductService productService;

初始化

public ProductController(IProductService productService)
       {
           this.productService = productService;
       }

当程序需要productService时，会通过container自动获取对象

添加对应视图

选list模板，暂时用entities里面的模型类，自己调整layout

<table class="striped responsive-table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.Name)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Description)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Price)
        </th>
        <th></th>
    </tr>
 
@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Description)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Price)
        </td>
    </tr>
}

启动调试，此时通过autofac创建的对象已经可以呈现出来了。