- A+
所属分类：.NET技术
Autofac
Autofac 是一款超赞的.NET IoC 容器 . 它管理类之间的依赖关系, 从而使 应用在规模及复杂性增长的情况下依然可以轻易地修改 . 它的实现方式是将常规的.net类当做 组件 处理.
控制反转背后的核心思想是, 我们不再将应用中的类捆绑在一起, 让类自己去 “new up” 他们的依赖, 而是反过来在类的构造方法中将依赖传递进去.
引用
<ItemGroup> <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="8.0.0" /> <PackageReference Include="Castle.Core" Version="5.1.1" /> </ItemGroup> Program.cs
//添加 autofac builder.Host.UseServiceProviderFactory(new AutofacServiceProviderFactory()); builder.Host.ConfigureContainer<ContainerBuilder>(builder => { builder.RegisterModule<AutofacConfig>(); }); AutofacConfig.cs
using Autofac; using Autofac.Extras.DynamicProxy; using Cnpc.Com.Ioc.Bll; using Cnpc.Com.Ioc.Dal; using Cnpc.Com.Ioc.IBll; using Cnpc.Com.Ioc.IDal; using Cnpc.Com.Ioc.Tools; namespace Cnpc.Com.AutofacTest.Autofac { public class AutofacConfig : Module { protected override void Load(ContainerBuilder builder) { //ioc builder.RegisterType<Pencil>().As<IWrite>(); //构造函数注入 builder.RegisterType<Student>().As<IStudent>().PropertiesAutowired(new PropertySelection()).OnActivated(it => { it.Instance.SetIWriten(it.Context.Resolve<IWrite>()); }).EnableInterfaceInterceptors(); //属性注入 + 指定属性注入 + 指定方法注入 + 开启Aop //aop builder.RegisterType<AutofacInterceptor>(); builder.RegisterType<TestAutofacInterceptor>(); } } } Aop AutofacInterceptor.cs
using Castle.DynamicProxy; using Microsoft.Extensions.Logging; using NLog; namespace Cnpc.Com.Ioc.Tools { public class AutofacInterceptor : IInterceptor { //支持NOP ILogger<AutofacInterceptor> logger; public AutofacInterceptor(ILogger<AutofacInterceptor> logger) { this.logger = logger; } public void Intercept(IInvocation invocation) { { logger.LogInformation("执行前"); Console.WriteLine("执行前： " + DateTime.Now.ToString() + "此消息来自：" + this.GetType().FullName) ; } invocation.Proceed(); { Console.WriteLine("执行后： " + DateTime.Now.ToString() + "此消息来自：" + this.GetType().FullName); } } } } 测试接口+实现
IStudent.cs
using Autofac.Extras.DynamicProxy; using Cnpc.Com.Ioc.IDal; using Cnpc.Com.Ioc.Tools; using Microsoft.Extensions.Logging; namespace Cnpc.Com.Ioc.IBll { [Intercept(typeof(TestAutofacInterceptor))] public interface IStudent { IWrite Write { get; set; } IWrite Write1 { get; set; } IWrite Write2 { get; set; } IWrite Write3 { get; set; } IWrite Write4 { get; set; } IWrite Write5 { get; set; } ILogger<IStudent> logger { get; set; } IWrite Write6 { get; set; } IWrite WriteContainer { get; set; } void SetIWriten(IWrite write); void DoHomeWork(IWrite writen); void Calligraphy(IWrite writen); } } Student.cs
using Autofac.Extras.DynamicProxy; using Cnpc.Com.Ioc.IBll; using Cnpc.Com.Ioc.IDal; using Cnpc.Com.Ioc.Tools; using Microsoft.Extensions.Logging; using NLog; namespace Cnpc.Com.Ioc.Bll { [Intercept(typeof(AutofacInterceptor))] public class Student : IStudent { [PropertySelecction] public IWrite Write { get; set ; } public IWrite WriteContainer { get ; set ; } public IWrite Write1 { get ; set ; } public IWrite Write2 { get ; set ; } public IWrite Write3 { get ; set ; } public IWrite Write4 { get ; set ; } public IWrite Write5 { get ; set ; } public IWrite Write6 { get ; set ; } //支持Nlog 属性注入 [PropertySelecction] public ILogger<IStudent> logger { get ; set ; } public void Calligraphy(IWrite writen) { writen.Write(); } public void DoHomeWork(IWrite writen) { logger.LogInformation("wow"); writen.Write(); } public void SetIWriten(IWrite write) { this.WriteContainer = write; } } } 
