1.在“工具”->“NuGet包管理器”->"程序包管理器控制台"执行一下代码,安装autofac。
Install-Package Autofac
当使用 autoFac 开发ASP .net 遇到 ContainerBuilder() 不包含RegisterControllers 方法解决方案(MVC环境下,注入Controller需要安装包)
Install-Package Autofac.Mvc5 -Version 4.0.2
当然也可以在项目点击右键点击“管理NuGet程序包 ”,在NuGet管理包页面,搜索AutoFac,进行下载安装。
2.using AutoFac;
using AutoFac.Intergation.MVC;
3.依赖注入配置代码(Golbal.asax的Application_Start方法中添加一下代码)
/// <summary> /// 使用AutoFac实现依赖注入 /// </summary> private void autoFac() { var builder = new ContainerBuilder(); SetupResolveRules(builder); //注入 builder.RegisterControllers(Assembly.GetExecutingAssembly()); //注入所有Controller var container = builder.Build(); DependencyResolver.SetResolver(new AutofacDependencyResolver(container)); }
private void SetupResolveRules(ContainerBuilder builder) { //UI项目只用引用service和repository的接口,不用引用实现的dll。 //如需加载实现的程序集,将dll拷贝到bin目录下即可,不用引用dll var IServices = Assembly.Load("MyMVC3.Business.IServices"); var Services = Assembly.Load("MyMVC3.Business.Services"); var IRepository = Assembly.Load("MyMVC3.Modules.IRepository"); var Repository = Assembly.Load("MyMVC3.Modules.Repository"); //根据名称约定(服务层的接口和实现均以Service结尾),实现服务接口和服务实现的依赖 builder.RegisterAssemblyTypes(IServices, Services) .Where(t => t.Name.EndsWith("Service")) .AsImplementedInterfaces(); //根据名称约定(数据访问层的接口和实现均以Repository结尾),实现数据访问接口和数据访问实现的依赖 builder.RegisterAssemblyTypes(IRepository, Repository) .Where(t => t.Name.EndsWith("Repository")) .AsImplementedInterfaces(); }
4.各层之间注入代码
private IUserInfoRepository productRepository; public UserInfoService(IUserInfoRepository productRepository) { this.productRepository = productRepository; this.AddDisposableObject(productRepository); }
public IUserInfoService userService; public HomeController(IUserInfoService userService) { this.userService = userService; this.AddDisposableObject(userService); }