c# – 在Startup.cs之外实现依赖注入

发布时间：2020-12-15 17:42:28 所属栏目：百科来源：网络整理

导读：我想在ASP.NET CORE 1中实现依赖注入.我知道一切都是关于.Net Core中的DI.例如 public void ConfigureServices(IServiceCollection services) { // Add application services. services.AddTransientIDateTime,SystemDateTime(); } 但是对于拥有20多个实体和

我想在ASP.NET CORE 1中实现依赖注入.我知道一切都是关于.Net Core中的DI.例如

public void ConfigureServices(IServiceCollection services)
   {
      // Add application services.
     services.AddTransient<IDateTime,SystemDateTime>();
   }

但是对于拥有20多个实体和服务的大型项目来说,写入ConfigurationServices中的所有代码行是非常困难和不可读的.我想知道这是否可能在Startup.cs之外执行依赖注入,然后将其添加到服务中.

感谢您的答案.

解决方法

您可以编写IServiceCollection的扩展方法,将许多服务注册封装到Startup.cs中的一行代码中

例如这里有一个来自我的项目：

using cloudscribe.Core.Models;
using cloudscribe.Core.Models.Setup;
using cloudscribe.Core.Web;
using cloudscribe.Core.Web.Components;
using cloudscribe.Core.Web.Components.Editor;
using cloudscribe.Core.Web.Components.Messaging;
using cloudscribe.Core.Web.Navigation;
using cloudscribe.Web.Common.Razor;
using cloudscribe.Web.Navigation;
using cloudscribe.Web.Navigation.Caching;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.Razor;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.Options;
using System.Reflection;
using Microsoft.AspNetCore.Authorization;

namespace Microsoft.Extensions.DependencyInjection
{
    public static class StartupExtensions
    {
        public static IServiceCollection AddCloudscribeCore(this IServiceCollection services,IConfigurationRoot configuration)
        {
            services.TryAddSingleton<IHttpContextAccessor,HttpContextAccessor>();
            services.Configure<MultiTenantOptions>(configuration.GetSection("MultiTenantOptions"));
            services.Configure<SiteConfigOptions>(configuration.GetSection("SiteConfigOptions"));
            services.Configure<UIOptions>(configuration.GetSection("UIOptions"));
            services.Configure<CkeditorOptions>(configuration.GetSection("CkeditorOptions"));
            services.Configure<CachingSiteResolverOptions>(configuration.GetSection("CachingSiteResolverOptions"));
            services.AddMultitenancy<SiteContext,CachingSiteResolver>();
            services.AddScoped<CacheHelper,CacheHelper>();
            services.AddScoped<SiteManager,SiteManager>();
            services.AddScoped<GeoDataManager,GeoDataManager>();
            services.AddScoped<SystemInfoManager,SystemInfoManager>();
            services.AddScoped<IpAddressTracker,IpAddressTracker>();
            services.AddScoped<SiteDataProtector>();
            services.AddCloudscribeCommmon();
            services.AddScoped<ITimeZoneIdResolver,RequestTimeZoneIdResolver>();
            services.AddCloudscribePagination();
            services.AddScoped<IVersionProviderFactory,VersionProviderFactory>();
            services.AddScoped<IVersionProvider,CloudscribeCoreVersionProvider>();
            services.AddTransient<ISiteMessageEmailSender,SiteEmailMessageSender>();
            services.AddTransient<ISmsSender,SiteSmsSender>();
            services.AddSingleton<IThemeListBuilder,SiteThemeListBuilder>();
            services.TryAddScoped<ViewRenderer,ViewRenderer>();
            services.AddSingleton<IOptions<NavigationOptions>,SiteNavigationOptionsResolver>();
            services.AddScoped<ITreeCacheKeyResolver,SiteNavigationCacheKeyResolver>();
            services.AddScoped<INodeUrlPrefixProvider,FolderTenantNodeUrlPrefixProvider>();
            services.AddCloudscribeNavigation(configuration);

            services.AddCloudscribeIdentity();

            return services;
        }


    }
}

在Startup.cs中,我用一行代码调用该方法

services.AddCloudscribeCore(Configuration);

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!