[Asp.Net Core]Autofac整合.NET5 MVC

Posted 2021-12-30 厦门德仔

整合.NET5 MVC

• 1.指定Autofac工厂替换默认工厂,Program指定
• 2.在Startup类增加ConfigureContainer 方法， 注册关系
• 3.通过控制器构造函数注入，获取实例
• 4.ServiceCollection注册的服务也可以让Autofac使用，因为Autofac在自己注册服务之前；会先把ServiceCollection中注册的服务全部接管过来；

1.指定Autofac工厂替换默认工厂,Program指定

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                //.ConfigureLogging(loggingBuilder=> 
                //  //配置log4Net配置文件的读取
                //    loggingBuilder.AddLog4Net("CfgFile/log4net.Config");
                //) 
                .ConfigureWebHostDefaults(webBuilder =>
                
                    webBuilder.UseStartup<Startup>();
                ).UseServiceProviderFactory(new AutofacServiceProviderFactory());
    

2.在Startup类增加ConfigureContainer 方法， 注册关系

        /// <summary>
        /// 整个方法被autofact自动调用
        /// 负责注册各种服务
        /// </summary>
        /// <param name="containerBuilder"></param>
        public void ConfigureContainer(ContainerBuilder containerBuilder)
        
            containerBuilder.RegisterType<TestServiceA>().As<ITestServiceA>();
            containerBuilder.RegisterType<TestServiceB>().As<ITestServiceB>();
            containerBuilder.RegisterType<TestServiceC>().As<ITestServiceC>();
            containerBuilder.RegisterType<TestServiceD>().As<ITestServiceD>().PropertiesAutowired();
            containerBuilder.RegisterType<TestServiceE>().As<ITestServiceE>();

        

3.通过控制器构造函数注入，获取实例

 public class SixThController : Controller
    
        private readonly ITestServiceA _iTestServiceA;
        private readonly ITestServiceB _iTestServiceB;
        private readonly ITestServiceC _iTestServiceC;
        private readonly ITestServiceD _iTestServiceD;
        private readonly ITestServiceE _iTestServiceE;
        public SixThController(
            ITestServiceA iTestServiceA,
            ITestServiceB iTestServiceB,
            ITestServiceC iTestServiceC,
            ITestServiceD iTestServiceD,
            ITestServiceE iTestServiceE) 
        
            _iTestServiceA = iTestServiceA;
            _iTestServiceB = iTestServiceB;
            _iTestServiceC =iTestServiceC;
            _iTestServiceD = iTestServiceD;
            _iTestServiceE = iTestServiceE;
            
        
        public IActionResult Index()
        
            _iTestServiceD.Show();
            return View();
        
    

4.ServiceCollection注册的服务也可以让Autofac使用，因为Autofac在自己注册服务之前；会先把ServiceCollection中注册的服务全部接管过来；

            #region ServiceCollection注册的服务也可以让Autofac使用，因为Autofac在自己注册服务之前；会先把ServiceCollection中注册的服务全部接管过来；
            //services.AddTransient<ITestServiceA, TestServiceA>();
            //services.AddTransient<ITestServiceB, TestServiceB>();
            //services.AddTransient<ITestServiceC, TestServiceC>();
            #endregion