NET Core 3.0 AutoFac内置DI替换的新姿势分享

public class AutofacModuleRegister : Autofac.Module
 {
  //重写Autofac管道Load方法，在这里注册注入
  protected override void Load(ContainerBuilder builder)
  {
   //必须是Service结束的
   builder.RegisterAssemblyTypes(GetAssemblyByName("BlogService")).Where(a => a.Name.EndsWith("Service")).AsImplementedInterfaces();
   builder.RegisterAssemblyTypes(GetAssemblyByName("BlogRepository")).Where(a => a.Name.EndsWith("Repository")).AsImplementedInterfaces();
   //单一注册
   // builder.RegisterType<PersonService>().Named<IPersonService>(typeof(PersonService).Name);
  }
  /// <summary>
  /// 根据程序集名称获取程序集
  /// </summary>
  /// <param name="AssemblyName">程序集名称</param>
  public static Assembly GetAssemblyByName(String AssemblyName)
  {
   return Assembly.Load(AssemblyName);
  }
 }

 public IServiceProvider ConfigureServices(IServiceCollection services)
  {
   services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
   return Blog.AutoFacModule.Solucation.AutoFac.Provider.RegisterAutofac.ForRegisterAutofac(services);
  }

public static class RegisterAutofac
 {
  public static IServiceProvider ForRegisterAutofac(IServiceCollection services)
  {
   var builder = new ContainerBuilder();
   builder.Populate(services);
   builder.RegisterModule<Blog.AutoFacModule.Solucation.AutoFac.Register.AutofacModuleRegister>();
   var container = builder.Build(); 
   return new AutofacServiceProvider(container);
  }
 }

[Route("api/[controller]")]
 [ApiController]
 public class ValuesController : ControllerBase
 {
  private IPersonService _personService;
  public ValuesController(IPersonService personService)
  {
   _personService = personService;
  }
  // GET api/values
  [HttpGet]
  public ActionResult<string> Get()
  {
   return Newtonsoft.Json.JsonConvert.SerializeObject(_personService.people());
  }
}

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

public void ConfigureContainer(ContainerBuilder builder)
  {
   //添加依赖注入关系
   builder.RegisterModule(new Blog.AutoFacModule.Solucation.AutoFac.Register.AutofacModuleRegister());
   var controllerBaseType = typeof(ControllerBase);
   //在控制器中使用依赖注入
   builder.RegisterAssemblyTypes(typeof(Program).Assembly)
    .Where(t => controllerBaseType.IsAssignableFrom(t) && t != controllerBaseType)
    .PropertiesAutowired();
  }