asp.net Core中同名服务注册的实现代码_实用技巧_

public class MyEmailService : IEmailService { public string Send(string Email) { return "My" + Email; } } public class EmailService : IEmailService return Email;

[Route("api/[controller]")] [ApiController] public class ValuesController : ControllerBase { private readonly IEnumerable emailService; private readonly ILogger logger; /// 
 /// 注入IServiceProvider获取服务 /// 
 ///  ///  public ValuesController(IServiceProvider serviceProvider, ILogger logger) { var service = serviceProvider.GetServices(); //获取服务 this.emailService = service; this.logger = logger; } [HttpGet] public IActionResult Send(string email) //可以遍历服务 foreach (var emailService in emailService) { if(emailService.GetType() == typeof(First_EmailService)) { //控制台输出调用日志 logger.LogInformation(emailService.Send(email)); } } return Ok(); }

public class ConfigureAutofac : Autofac.Module { private static IContainer _container; protected override void Load(ContainerBuilder containerBuilder) { //注册两个不同命名的服务 containerBuilder.RegisterType().Named("one"); containerBuilder.RegisterType().Named("two"); //需要在回调用获取容器 containerBuilder.RegisterBuildCallback(container => { _container = (IContainer)container; var one = _container.ResolveNamed("two"); one.Send("one"); }); } }

/// 
 /// ConfigureServices将默认的容器注入进去，Autofac会接替默认的，然后执行ConfigureContainer /// 
 ///  public void ConfigureContainer(ContainerBuilder builder) { builder.RegisterType().As(); } //注册根容器 public ILifetimeScope AutofacContainer { get; private set; } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) this.AutofacContainer = app.ApplicationServices.GetAutofacRoot(); var serviceName = this.AutofacContainer.Resolve(); serviceName.ShowCode(); //...

services.AddSingleton();

[Route("api/[controller]")] [ApiController] public class ValuesController : ControllerBase { private readonly IApplicationBuilder app; private readonly ILogger logger; public ILifetimeScope AutofacContainer { get; private set; } public ValuesController(IApplicationBuilder app, ILogger logger) { this.app = app; this.logger = logger; } [HttpGet] public IActionResult Send(string email) this.AutofacContainer = app.ApplicationServices.GetAutofacRoot(); var serviceName = this.AutofacContainer.ResolveNamed("one"); logger.LogInformation(serviceName.Send(string.Empty)); return Ok(); }