Autofac is an excellent. Net IOC framework

autofac excellent. excellent ioc framework


1 Pre reading

Before reading this article , You can read it first :

  • What is dependency injection

2 brief introduction

Autofac And C# The combination of language is very close , And learn that it's very simple , It's also .NET The most popular in this field IoC One of the frames .

3 Use

First , take Autofac Of NuGet Install the package into your application .

Autofac

then , We create ContainerBuilder To register components .

var builder = new ContainerBuilder();
builder.RegisterType<Knife>();
builder.RegisterType<Actor>();

next , You can call... On an existing lifecycle BeginLifetimeScope() Method to create another lifecycle scope , Start with the root container . Lifecycle scopes are releasable and track the release of components , So make sure you always call "Dispose()"" Or wrap them in "using" Statement within .

using (var scope = container.BeginLifetimeScope())
{
}

Last , After registering components and exposing corresponding services , You can parse services from the created container or its child life cycle . Let's use Resolve() Method to implement :

using (var scope = container.BeginLifetimeScope())
{
var actor = scope.Resolve<Actor>();
actor.Kill();
}

Let's take a look at the complete code :

using System;
namespace Autofac.ConsoleApp
{
class Program
{
static void Main(string[] args)
{
var builder = new ContainerBuilder();
builder.RegisterType<Knife>();
builder.RegisterType<Actor>();
var container = builder.Build();
using (var scope = container.BeginLifetimeScope())
{
var actor = scope.Resolve<Actor>();
actor.Kill();
}
Console.ReadKey();
}
}
}

Let's look at the output :

 Xiao Ming kills monsters with a knife

4 stay Asp.Net Core Use in

First , take Autofac,Autofac.Extensions.DependencyInjection Of NuGet Install the package into your application .

dotnet add package Autofac
dotnet add package Autofac.Extensions.DependencyInjection

then , stay Program.Main add .UseServiceProviderFactory(new AutofacServiceProviderFactory())

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

next , stay Startup.ConfigureServices add services.AddControllersWithViews();

public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "Autofac.WebApi", Version = "v1" });
});
services.AddControllersWithViews();
}

next , stay Startup.ConfigureContainer In the method , take Knife,Actor Sign up to Autofac in ContainerBuilder.

public void ConfigureContainer(ContainerBuilder builder)
{
builder.RegisterType<Knife>();
builder.RegisterType<Actor>();
}

Last , increase HomeController, perform actor.Kill.

using Microsoft.AspNetCore.Mvc;
using System;
namespace Autofac.WebApi.Controllers
{
[Route("[controller]")]
[ApiController]
public class HomeController : Controller
{
private readonly Actor actor;
public HomeController(Actor actor)
{
this.actor = actor ?? throw new ArgumentNullException(nameof(actor));
}
[HttpGet]
public string Get()
{
return actor.Kill();
}
}
}

Start debugging , Let's look at the output :

 Xiao Ming kills monsters with a knife
版权声明
本文为[Nan rongxiangru talks about programming]所创,转载请带上原文链接,感谢
https://javamana.com/2021/01/20210114185512262l.html

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