Autofac 中间件使用

0-添加 Autofac.Extensions.DependencyInjection 引用

1-NetCore 2.x 依赖注入模式

# 返回类型 改成  IServiceProvider
public IServiceProvider ConfigureServices(IServiceCollection services)
 {
var builder = new ContainerBuilder();
            builder.Populate(services);
            builder.RegisterAssemblyTypes(Assembly.Load("GR.Interfaces"), Assembly.Load("GR.Services"))
              .AsSelf()
              .AsImplementedInterfaces()
              .InstancePerLifetimeScope()
              .PropertiesAutowired();

            var Container = builder.Build();
            return new AutofacServiceProvider(Container);
 }

 

2-NetCore 3.x 依赖注入模式

2.1-Program 中添加 UseServiceProviderFactory(new AutofacServiceProviderFactory())

 public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseServiceProviderFactory(new AutofacServiceProviderFactory())//添加这行代码
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });

2.2-Startup 中添加方法 ConfigureContainer(ContainerBuilder builder）

public void ConfigureContainer(ContainerBuilder builder)
        {
            ////过滤器注册
            //builder.RegisterAssemblyTypes(Assembly.Load("IoC.Web"))
            //     .Where(t => t.BaseType.FullName.Contains("Filter"))
            //     .AsSelf();
            //

            builder.RegisterAssemblyTypes(Assembly.Load("IoC.Application"),
                Assembly.Load("IoC.Domain"))
                 .Where(x => typeof(IScopedDenpency).IsAssignableFrom(x) && !x.IsAbstract)
                .AsSelf()
                .AsImplementedInterfaces()
                .InstancePerLifetimeScope()
                .PropertiesAutowired();

            builder.RegisterAssemblyTypes(Assembly.Load("IoC.Application"),
                Assembly.Load("IoC.Domain"))
            .Where(x => typeof(ISingletonDenpency).IsAssignableFrom(x) && !x.IsAbstract)
              .AsSelf()
              .AsImplementedInterfaces()
              .SingleInstance()
              .PropertiesAutowired();


            builder.RegisterAssemblyTypes(Assembly.Load("IoC.Application"),
                Assembly.Load("IoC.Domain"))
              .Where(x => typeof(ITraintDenpency).IsAssignableFrom(x) && !x.IsAbstract)
              .AsSelf()
              .AsImplementedInterfaces()
              .InstancePerDependency()
              .PropertiesAutowired();

            //builder.RegisterAssemblyTypes(Assembly.Load("IoC.Application"), Assembly.Load("IoC.Domain"))
            //  .AsSelf()
            //  .AsImplementedInterfaces()
            //  .InstancePerLifetimeScope()
            //  .PropertiesAutowired();
        }