asp.net core程序集自动注入

 

 public void ConfigureServices(IServiceCollection services)
{
	//services.AddSingleton<>();
	//services.AddTransient();
	//services.AddSingleton(typeof(IAdminBLL), typeof(AdminBLLImp));

	//业务层注入  
	Assembly assemblys = Assembly.Load("BLL");
	//接口
	var typesInterface = assemblys.GetTypes().Where(w => w.Namespace == "BLL.BLL.Interface");
	//实现类
	var typesImpl= assemblys.GetTypes().Where(w => w.Namespace == "BLL.BLL.Implementation");
	foreach (var item in typesInterface)
	{           
		var name = item.Name.Substring(1);
		var impl = typesImpl.FirstOrDefault(w => w.Name.Contains(name));
		if (impl!=null)
		{
			services.AddTransient(item, impl);
		}                
	}
	services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
}

 

.NET5版本自动注入参考

 

 

 Startup.cs

using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using WebNetCore5_Img_Storage.BLL;
using WebNetCore5_Img_Storage.Handler;
using WebNetCore5_Img_Storage.IBLL;
using WebNetCore5_Img_Storage.Model.Tool;

namespace WebNetCore5_Img_Storage
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            //解决中文输出后被编码了
            services.Configure(options =>
            {
                options.TextEncoderSettings = new System.Text.Encodings.Web.TextEncoderSettings(System.Text.Unicode.UnicodeRanges.All);
            });
            //services.AddControllersWithViews();

            //添加全局筛选器：
            services.AddControllersWithViews(options =>
            {
                options.Filters.Add(typeof(CustomExceptionFilter));
            })
             //自定义格式化json使用Newtonsoft.Json
             .AddNewtonsoftJson();

            //services.addNew
            services.AddRazorPages();

            //session配置缓存组件依赖，分布式缓存
            //services.AddDistributedMemoryCache();

            //会话存活时间，单位（秒）
            int sessionTime = 0;
            int.TryParse(MyConfigReader.GetConfigValue("session_live_time"), out sessionTime);
            if (sessionTime == 0)
            {
                sessionTime = 7200;
            }
            services.AddSession(options =>
            {
                //设置cookie名称
                //options.Cookie.Name = ".AspNetCore.Session";
                //会话滑动过期时间，距下次访问最小时间，超过则session失效
                options.IdleTimeout = TimeSpan.FromSeconds(sessionTime);
                options.Cookie.HttpOnly = true;
                options.Cookie.IsEssential = true;
            });

            //业务层注入  
            //services.AddScoped();

            string path = AppDomain.CurrentDomain.BaseDirectory;
            Assembly bll_impl = Assembly.LoadFrom(path + "WebNetCore5_Img_Storage.BLL.dll");
            Assembly bll_interface = Assembly.LoadFrom(path + "WebNetCore5_Img_Storage.IBLL.dll");
            var typesInterface = bll_interface.GetTypes();
            var typesImpl = bll_impl.GetTypes();
            foreach (var item in typesInterface)
            {
                var name = item.Name.Substring(1);
                string implBLLImpName = name + "Impl";
                var impl = typesImpl.FirstOrDefault(w => w.Name.Equals(implBLLImpName));
                if (impl != null)
                {
                    //services.AddTransient(item, impl);
                    //services.AddSingleton(item, impl);
                    services.AddScoped(item, impl);
                }
            }

            //数据层注册 
            Assembly dalAssemblys = Assembly.LoadFrom(path + "WebNetCore5_Img_Storage.DAL.dll");
            Assembly dalInterface = Assembly.LoadFrom(path + "WebNetCore5_Img_Storage.IDAL.dll");
            var dalTypesImpl = dalAssemblys.GetTypes();
            var dalTypesInterface = dalInterface.GetTypes();
            foreach (var item in dalTypesInterface)
            {
                var name = item.Name.Substring(1);
                string implDalName = name + "Impl";
                var impl = dalTypesImpl.FirstOrDefault(w => w.Name.Equals(implDalName));
                if (impl != null)
                {
                    //services.AddTransient(item, impl);
                    services.AddScoped(item, impl);
                }
            }
 
            // services.AddSingleton();
            //services.AddSingleton();

            services.AddMvcCore();
            //ConfigureServices结束

            services.AddScoped();
            services.AddSignalR();
            //services.AddAuthentication().AddCookie();
            //CookieAuthenticationDefaults.AuthenticationScheme
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
            }
            //app.UseHttpsRedirection();

            app.UseStaticFiles(new StaticFileOptions()
            {
                //不限制content-type下载
                ServeUnknownFileTypes = true,

                配置的虚拟路径映射
                //RequestPath = "/local",
                物理地址
                //FileProvider = new Microsoft.Extensions.FileProviders.PhysicalFileProvider("D:\\Work\\西南油气田图库系统\\WebNetCore5_Img_Storage\\WebNetCore5_Img_Storage\\bin\\Debug\\net5.0"),
            });

            app.UseRouting();

            //app.UseAuthentication();
            app.UseAuthorization();

            app.UseSession();

            //app.UseResponseCaching();
            //app.UseResponseCompression();

            //用MVC模式, 针对services的services.AddControllersWithViews();
            app.UseEndpoints(endpoints =>
            {
                //endpoints.MapDefaultControllerRoute();
                endpoints.MapRazorPages();

                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");

                endpoints.MapHub("/chathub");
            });

        }
    }
}