如何在MVC Core和AutoFac中使用属性注入 [英] How to use Property Injection in MVC Core and AutoFac

问题描述

我可以在MVC Core中轻松使用构造函数参数注入。但是不支持Property Injection。我尝试使用AutoFac但也失败。

那么如何在MVC Core中使用Property Injection。

这是AutoFac的代码

I can use Constructor Parameter Injection easily In MVC Core. But Property Injection is not supported.I try use AutoFac but fail too.
So how to use Property Injection in MVC Core.
Here is the code with AutoFac

services.AddMvc();
ContainerBuilder builder = new ContainerBuilder();
builder.RegisterType<Test2>().As<ITest>();
builder.RegisterType<HomeController>().PropertiesAutowired();
builder.Populate(services);
var container = builder.Build();
//The following code works
HomeController test2 = container.Resolve<HomeController>();
return new AutofacServiceProvider(container); 

推荐答案

在dotnet核心中，您需要进行以下更改使Autofac工作：
在您的应用程序 Startup.cs

In dotnet core, you need to make the following changes to make Autofac work: Add a public Autofac IContainer in your application Startup.cs

public IContainer ApplicationContainer { get; private set; }

在<$ c $中更改 ConfigureServices c> Startup.cs 返回 IServiceProvider ，进行所有注册，并使用 builder填充容器中的框架服务.Populat（services）; 。请注意，您不需要执行 builder.RegisterType< HomeController>（）。PropertiesAutowired（）;

Change ConfigureServices in Startup.cs to return IServiceProvider, do all your registrations, populate the framework services in your container by using builder.Populat(services);. Please note that there is no need for you to do builder.RegisterType<HomeController>().PropertiesAutowired();

public IServiceProvider ConfigureServices(IServiceCollection services)
{
    builder.Populate(services);
    ApplicationContainer = container;
    return new AutofacServiceProvider(ApplicationContainer);
}

您还需要确保在处理停止的应用程序上处理容器

You will also need to make sure you dispose the container on application stopped by doing this in your Configure method.

public void Configure(IApplicationBuilder app, IApplicationLifetime appLifetime)
{
    app.UseMvc();           
    appLifetime.ApplicationStopped.Register(() => ApplicationContainer.Dispose());
}

执行此操作后-控制器应自动将属性自动关联。

After you do this - your controllers should automatically get the properties autowired.

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